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	<updated>2026-04-17T09:31:04Z</updated>
	<subtitle>User contributions</subtitle>
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	<entry>
		<id>https://wiki.umiacs.umd.edu/umiacs/index.php?title=Snapshots:Example&amp;diff=5252</id>
		<title>Snapshots:Example</title>
		<link rel="alternate" type="text/html" href="https://wiki.umiacs.umd.edu/umiacs/index.php?title=Snapshots:Example&amp;diff=5252"/>
		<updated>2013-07-02T15:12:46Z</updated>

		<summary type="html">&lt;p&gt;Amgast: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;Note that in this example, the the directory &amp;quot;.snapshot&amp;quot; could also be either &amp;quot;.snapshots&amp;quot; or &amp;quot;.zfs/snapshot&amp;quot; depending on the filer serving your host.  Just look for one of these three when you use the &amp;quot;ls -a&amp;quot; command.&lt;br /&gt;
&lt;br /&gt;
----&lt;br /&gt;
&lt;br /&gt;
Changing to my quotes directory.&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty quotes]$ pwd&lt;br /&gt;
/nfshomes/derek/work/quotes&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
I see that i have a quote called  &#039;&#039;&#039;redhat_sole_source_2007.doc&#039;&#039;&#039;.&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty quotes]$ ls&lt;br /&gt;
dlt_pdf_quote2007.pdf  Quote_300086759.html         redhat_solesource.pdf&lt;br /&gt;
dlt_pdf_quote.pdf      Quote_353511914.html         soleSource2007.pdf&lt;br /&gt;
dlt_quote.pdf          Quote_367512608.html         soleSource.pdf&lt;br /&gt;
dy1014.xls             Quote_367884529.html         UMD_008.xls&lt;br /&gt;
Quote_250530976.html   redhat_sole_source_2007.doc&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty quotes]$ ls -la redhat_sole_source_2007.doc &lt;br /&gt;
-rw-r--r-- 1 derek derek 39936 Jan 23  2007 redhat_sole_source_2007.doc&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
I will remove it from the current file system.&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty quotes]$ rm redhat_sole_source_2007.doc &lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
As you can see it no longer is there.&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty quotes]$ ls &lt;br /&gt;
dlt_pdf_quote2007.pdf  Quote_250530976.html  Quote_367884529.html   UMD_008.xls&lt;br /&gt;
dlt_pdf_quote.pdf      Quote_300086759.html  redhat_solesource.pdf&lt;br /&gt;
dlt_quote.pdf          Quote_353511914.html  soleSource2007.pdf&lt;br /&gt;
dy1014.xls             Quote_367512608.html  soleSource.pdf&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
I am going to go into the last hourly snapshot &#039;&#039;&#039;hourly.0&#039;&#039;&#039;&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty quotes]$ cd .snapshot/hourly.0&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
As you can see the quote is still here.&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty hourly.0]$ ls&lt;br /&gt;
dlt_pdf_quote2007.pdf  Quote_300086759.html         redhat_solesource.pdf&lt;br /&gt;
dlt_pdf_quote.pdf      Quote_353511914.html         soleSource2007.pdf&lt;br /&gt;
dlt_quote.pdf          Quote_367512608.html         soleSource.pdf&lt;br /&gt;
dy1014.xls             Quote_367884529.html         UMD_008.xls&lt;br /&gt;
Quote_250530976.html   redhat_sole_source_2007.doc&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
I copy it back to the original directory.&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty hourly.0]$ cp redhat_sole_source_2007.doc /nfshomes/derek/work/quotes/&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
Change back to the original directory.&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty hourly.0]$ cd /nfshomes/derek/work/quotes/&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
And it is back.&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty quotes]$ ls&lt;br /&gt;
dlt_pdf_quote2007.pdf  Quote_300086759.html         redhat_solesource.pdf&lt;br /&gt;
dlt_pdf_quote.pdf      Quote_353511914.html         soleSource2007.pdf&lt;br /&gt;
dlt_quote.pdf          Quote_367512608.html         soleSource.pdf&lt;br /&gt;
dy1014.xls             Quote_367884529.html         UMD_008.xls&lt;br /&gt;
Quote_250530976.html   redhat_sole_source_2007.doc&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
[[Category:Snapshots]]&lt;br /&gt;
__NOTOC__&lt;/div&gt;</summary>
		<author><name>Amgast</name></author>
	</entry>
	<entry>
		<id>https://wiki.umiacs.umd.edu/umiacs/index.php?title=Snapshots:Example&amp;diff=5251</id>
		<title>Snapshots:Example</title>
		<link rel="alternate" type="text/html" href="https://wiki.umiacs.umd.edu/umiacs/index.php?title=Snapshots:Example&amp;diff=5251"/>
		<updated>2013-07-02T15:10:46Z</updated>

		<summary type="html">&lt;p&gt;Amgast: Created page with &amp;quot;An example:  Changing to my quotes directory. &amp;lt;pre&amp;gt; [derek@novelty quotes]$ pwd /nfshomes/derek/work/quotes &amp;lt;/pre&amp;gt; I see that i have a quote called  &amp;#039;&amp;#039;&amp;#039;redhat_sole_source_2007...&amp;quot;&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;An example:&lt;br /&gt;
&lt;br /&gt;
Changing to my quotes directory.&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty quotes]$ pwd&lt;br /&gt;
/nfshomes/derek/work/quotes&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
I see that i have a quote called  &#039;&#039;&#039;redhat_sole_source_2007.doc&#039;&#039;&#039;.&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty quotes]$ ls&lt;br /&gt;
dlt_pdf_quote2007.pdf  Quote_300086759.html         redhat_solesource.pdf&lt;br /&gt;
dlt_pdf_quote.pdf      Quote_353511914.html         soleSource2007.pdf&lt;br /&gt;
dlt_quote.pdf          Quote_367512608.html         soleSource.pdf&lt;br /&gt;
dy1014.xls             Quote_367884529.html         UMD_008.xls&lt;br /&gt;
Quote_250530976.html   redhat_sole_source_2007.doc&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty quotes]$ ls -la redhat_sole_source_2007.doc &lt;br /&gt;
-rw-r--r-- 1 derek derek 39936 Jan 23  2007 redhat_sole_source_2007.doc&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
I will remove it from the current file system.&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty quotes]$ rm redhat_sole_source_2007.doc &lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
As you can see it no longer is there.&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty quotes]$ ls &lt;br /&gt;
dlt_pdf_quote2007.pdf  Quote_250530976.html  Quote_367884529.html   UMD_008.xls&lt;br /&gt;
dlt_pdf_quote.pdf      Quote_300086759.html  redhat_solesource.pdf&lt;br /&gt;
dlt_quote.pdf          Quote_353511914.html  soleSource2007.pdf&lt;br /&gt;
dy1014.xls             Quote_367512608.html  soleSource.pdf&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
I am going to go into the last hourly snapshot &#039;&#039;&#039;hourly.0&#039;&#039;&#039;&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty quotes]$ cd .snapshot/hourly.0&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
As you can see the quote is still here.&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty hourly.0]$ ls&lt;br /&gt;
dlt_pdf_quote2007.pdf  Quote_300086759.html         redhat_solesource.pdf&lt;br /&gt;
dlt_pdf_quote.pdf      Quote_353511914.html         soleSource2007.pdf&lt;br /&gt;
dlt_quote.pdf          Quote_367512608.html         soleSource.pdf&lt;br /&gt;
dy1014.xls             Quote_367884529.html         UMD_008.xls&lt;br /&gt;
Quote_250530976.html   redhat_sole_source_2007.doc&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
I copy it back to the original directory.&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty hourly.0]$ cp redhat_sole_source_2007.doc /nfshomes/derek/work/quotes/&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
Change back to the original directory.&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty hourly.0]$ cd /nfshomes/derek/work/quotes/&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
And it is back.&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty quotes]$ ls&lt;br /&gt;
dlt_pdf_quote2007.pdf  Quote_300086759.html         redhat_solesource.pdf&lt;br /&gt;
dlt_pdf_quote.pdf      Quote_353511914.html         soleSource2007.pdf&lt;br /&gt;
dlt_quote.pdf          Quote_367512608.html         soleSource.pdf&lt;br /&gt;
dy1014.xls             Quote_367884529.html         UMD_008.xls&lt;br /&gt;
Quote_250530976.html   redhat_sole_source_2007.doc&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
[[Category:Snapshots]]&lt;br /&gt;
__NOTOC__&lt;/div&gt;</summary>
		<author><name>Amgast</name></author>
	</entry>
	<entry>
		<id>https://wiki.umiacs.umd.edu/umiacs/index.php?title=Snapshots&amp;diff=5250</id>
		<title>Snapshots</title>
		<link rel="alternate" type="text/html" href="https://wiki.umiacs.umd.edu/umiacs/index.php?title=Snapshots&amp;diff=5250"/>
		<updated>2013-07-02T15:10:35Z</updated>

		<summary type="html">&lt;p&gt;Amgast: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;Snapshots are a implementation of copy on write that allows for a file system to quickly take a point in time copy of the file system and provide access to the data through a .snapshot directory.&lt;br /&gt;
&lt;br /&gt;
We provide [[Snapshots]] on our [[ONStor]], [[SnapshotsNexenta | Nexenta]] and [[Snapshots:FluidFS | FluidFS]] filers to certain file systems.&lt;br /&gt;
&lt;br /&gt;
Please see [[SnapshotFileSystems]] for a list of our file systems that have snapshots in the department.&lt;br /&gt;
&lt;br /&gt;
==Snapshot Policy==&lt;br /&gt;
&lt;br /&gt;
Our core file systems in the department are on a 4 hour snapshot cycle.  Snapshots are taken at,&lt;br /&gt;
&lt;br /&gt;
{| style=&amp;quot;color:green; background-color:#ffffcc;&amp;quot; cellpadding=&amp;quot;5&amp;quot; cellspacing=&amp;quot;0&amp;quot;&lt;br /&gt;
|  12am&lt;br /&gt;
| 4am&lt;br /&gt;
| 8am&lt;br /&gt;
| 12pm&lt;br /&gt;
| 4pm&lt;br /&gt;
| 8pm&lt;br /&gt;
|}&lt;br /&gt;
&lt;br /&gt;
We retain up to 8 hourly snapshots, 2 daily snapshots and 1 weekly snapshot.&lt;br /&gt;
&lt;br /&gt;
The [[OpenLAB]] filesystems on which snapshots are available are listed on the [[SnapshotFileSystems]] page.&lt;br /&gt;
&lt;br /&gt;
==Snapshot Restoring==&lt;br /&gt;
&lt;br /&gt;
If you have deleted a file by mistake and you need to get it back, you can use the snapshots directory to recopy the file.  This directory can typically be found in your home directory; it will be prepended by a ., so you will need to use the command &amp;quot;ls -a&amp;quot; to find it.  It will be one of three:&lt;br /&gt;
&lt;br /&gt;
* .snapshot for the [[ONStor]] (will be removed soon!) / [[Snapshots:NetApp | NetApp]] filers&lt;br /&gt;
* .snapshots for the [[Snapshots:FluidFS | FluidFS]] filer&lt;br /&gt;
* .zfs/snapshots for the [[SnapshotsNexenta | Nexenta]] / [[Snapshots:ZFS | ZFS]] filers&lt;br /&gt;
&lt;br /&gt;
The inside of one of these will look something like:&lt;br /&gt;
&lt;br /&gt;
[[File:Screenshot-.snapshot_-_bash.png]]&lt;br /&gt;
&lt;br /&gt;
For an example of file restoration, please see [[Snapshots:Example | this page]].&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
[[Category:Snapshots]]&lt;br /&gt;
__NOTOC__&lt;/div&gt;</summary>
		<author><name>Amgast</name></author>
	</entry>
	<entry>
		<id>https://wiki.umiacs.umd.edu/umiacs/index.php?title=Snapshots&amp;diff=5249</id>
		<title>Snapshots</title>
		<link rel="alternate" type="text/html" href="https://wiki.umiacs.umd.edu/umiacs/index.php?title=Snapshots&amp;diff=5249"/>
		<updated>2013-07-02T15:10:23Z</updated>

		<summary type="html">&lt;p&gt;Amgast: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;Snapshots are a implementation of copy on write that allows for a file system to quickly take a point in time copy of the file system and provide access to the data through a .snapshot directory.&lt;br /&gt;
&lt;br /&gt;
We provide [[Snapshots]] on our [[ONStor]], [[SnapshotsNexenta | Nexenta]] and [[Snapshots:FluidFS | FluidFS]] filers to certain file systems.&lt;br /&gt;
&lt;br /&gt;
Please see [[SnapshotFileSystems]] for a list of our file systems that have snapshots in the department.&lt;br /&gt;
&lt;br /&gt;
==Snapshot Policy==&lt;br /&gt;
&lt;br /&gt;
Our core file systems in the department are on a 4 hour snapshot cycle.  Snapshots are taken at,&lt;br /&gt;
&lt;br /&gt;
{| style=&amp;quot;color:green; background-color:#ffffcc;&amp;quot; cellpadding=&amp;quot;5&amp;quot; cellspacing=&amp;quot;0&amp;quot;&lt;br /&gt;
|  12am&lt;br /&gt;
| 4am&lt;br /&gt;
| 8am&lt;br /&gt;
| 12pm&lt;br /&gt;
| 4pm&lt;br /&gt;
| 8pm&lt;br /&gt;
|}&lt;br /&gt;
&lt;br /&gt;
We retain up to 8 hourly snapshots, 2 daily snapshots and 1 weekly snapshot.&lt;br /&gt;
&lt;br /&gt;
The [[OpenLAB]] filesystems on which snapshots are available are listed on the [[SnapshotFileSystems]] page.&lt;br /&gt;
&lt;br /&gt;
==Snapshot Restoring==&lt;br /&gt;
&lt;br /&gt;
If you have deleted a file by mistake and you need to get it back, you can use the snapshots directory to recopy the file.  This directory can typically be found in your home directory; it will be prepended by a ., so you will need to use the command &amp;quot;ls -a&amp;quot; to find it.  It will be one of three:&lt;br /&gt;
&lt;br /&gt;
* .snapshot for the [[ONStor]] (will be removed soon!) / [[Snapshots:NetApp | NetApp]] filers&lt;br /&gt;
* .snapshots for the [[Snapshots:FluidFS | FluidFS]] filer&lt;br /&gt;
* .zfs/snapshots for the [[SnapshotsNexenta | Nexenta]] / [[Snapshots:ZFS | ZFS]] filers&lt;br /&gt;
&lt;br /&gt;
The inside of one of these will look something like:&lt;br /&gt;
&lt;br /&gt;
[[File:Screenshot-.snapshot_-_bash.png]]&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
For an example of file restoration, please see [[Snapshots:Example | this page]].&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
[[Category:Snapshots]]&lt;br /&gt;
__NOTOC__&lt;/div&gt;</summary>
		<author><name>Amgast</name></author>
	</entry>
	<entry>
		<id>https://wiki.umiacs.umd.edu/umiacs/index.php?title=Snapshots&amp;diff=5248</id>
		<title>Snapshots</title>
		<link rel="alternate" type="text/html" href="https://wiki.umiacs.umd.edu/umiacs/index.php?title=Snapshots&amp;diff=5248"/>
		<updated>2013-07-02T15:10:11Z</updated>

		<summary type="html">&lt;p&gt;Amgast: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;Snapshots are a implementation of copy on write that allows for a file system to quickly take a point in time copy of the file system and provide access to the data through a .snapshot directory.&lt;br /&gt;
&lt;br /&gt;
We provide [[Snapshots]] on our [[ONStor]], [[SnapshotsNexenta | Nexenta]] and [[Snapshots:FluidFS | FluidFS]] filers to certain file systems.&lt;br /&gt;
&lt;br /&gt;
Please see [[SnapshotFileSystems]] for a list of our file systems that have snapshots in the department.&lt;br /&gt;
&lt;br /&gt;
==Snapshot Policy==&lt;br /&gt;
&lt;br /&gt;
Our core file systems in the department are on a 4 hour snapshot cycle.  Snapshots are taken at,&lt;br /&gt;
&lt;br /&gt;
{| style=&amp;quot;color:green; background-color:#ffffcc;&amp;quot; cellpadding=&amp;quot;5&amp;quot; cellspacing=&amp;quot;0&amp;quot;&lt;br /&gt;
|  12am&lt;br /&gt;
| 4am&lt;br /&gt;
| 8am&lt;br /&gt;
| 12pm&lt;br /&gt;
| 4pm&lt;br /&gt;
| 8pm&lt;br /&gt;
|}&lt;br /&gt;
&lt;br /&gt;
We retain up to 8 hourly snapshots, 2 daily snapshots and 1 weekly snapshot.&lt;br /&gt;
&lt;br /&gt;
The [[OpenLAB]] filesystems on which snapshots are available are listed on the [[SnapshotFileSystems]] page.&lt;br /&gt;
&lt;br /&gt;
==Snapshot Restoring==&lt;br /&gt;
&lt;br /&gt;
If you have deleted a file by mistake and you need to get it back, you can use the snapshots directory to recopy the file.  This directory can typically be found in your home directory; it will be prepended by a ., so you will need to use the command &amp;quot;ls -a&amp;quot; to find it.  It will be one of three:&lt;br /&gt;
&lt;br /&gt;
* .snapshot for the [[ONStor]] (will be removed soon!) / [[Snapshots:NetApp | NetApp]] filers&lt;br /&gt;
* .snapshots for the [[Snapshots:FluidFS | FluidFS]] filer&lt;br /&gt;
* .zfs/snapshots for the [[SnapshotsNexenta | Nexenta]] / [[Snapshots:ZFS | ZFS]] filers&lt;br /&gt;
&lt;br /&gt;
The inside of one of these will look something like:&lt;br /&gt;
&lt;br /&gt;
[[File:Screenshot-.snapshot_-_bash.png]]&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
For an example of file restoration, please see [[Snapshots:Example | this page]].&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
[[Category:Snapshots]]&lt;br /&gt;
__NOTOC__&lt;/div&gt;</summary>
		<author><name>Amgast</name></author>
	</entry>
	<entry>
		<id>https://wiki.umiacs.umd.edu/umiacs/index.php?title=Snapshots&amp;diff=5247</id>
		<title>Snapshots</title>
		<link rel="alternate" type="text/html" href="https://wiki.umiacs.umd.edu/umiacs/index.php?title=Snapshots&amp;diff=5247"/>
		<updated>2013-07-02T15:10:00Z</updated>

		<summary type="html">&lt;p&gt;Amgast: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;Snapshots are a implementation of copy on write that allows for a file system to quickly take a point in time copy of the file system and provide access to the data through a .snapshot directory.&lt;br /&gt;
&lt;br /&gt;
We provide [[Snapshots]] on our [[ONStor]], [[SnapshotsNexenta | Nexenta]] and [[Snapshots:FluidFS | FluidFS]] filers to certain file systems.&lt;br /&gt;
&lt;br /&gt;
Please see [[SnapshotFileSystems]] for a list of our file systems that have snapshots in the department.&lt;br /&gt;
&lt;br /&gt;
==Snapshot Policy==&lt;br /&gt;
&lt;br /&gt;
Our core file systems in the department are on a 4 hour snapshot cycle.  Snapshots are taken at,&lt;br /&gt;
&lt;br /&gt;
{| style=&amp;quot;color:green; background-color:#ffffcc;&amp;quot; cellpadding=&amp;quot;5&amp;quot; cellspacing=&amp;quot;0&amp;quot;&lt;br /&gt;
|  12am&lt;br /&gt;
| 4am&lt;br /&gt;
| 8am&lt;br /&gt;
| 12pm&lt;br /&gt;
| 4pm&lt;br /&gt;
| 8pm&lt;br /&gt;
|}&lt;br /&gt;
&lt;br /&gt;
We retain up to 8 hourly snapshots, 2 daily snapshots and 1 weekly snapshot.&lt;br /&gt;
&lt;br /&gt;
The [[OpenLAB]] filesystems on which snapshots are available are listed on the [[SnapshotFileSystems]] page.&lt;br /&gt;
&lt;br /&gt;
==Snapshot Restoring==&lt;br /&gt;
&lt;br /&gt;
If you have deleted a file by mistake and you need to get it back, you can use the snapshots directory to recopy the file.  This directory can typically be found in your home directory; it will be prepended by a ., so you will need to use the command &amp;quot;ls -a&amp;quot; to find it.  It will be one of three:&lt;br /&gt;
&lt;br /&gt;
* .snapshot for the [[ONStor]] (will be removed soon!) / [[Snapshots:NetApp | NetApp]] filers&lt;br /&gt;
* .snapshots for the [[Snapshots:FluidFS | FluidFS]] filer&lt;br /&gt;
* .zfs/snapshots for the [[SnapshotsNexenta | Nexenta]] / [[Snapshots:ZFS | ZFS]] filers&lt;br /&gt;
&lt;br /&gt;
The inside of one of these will look something like:&lt;br /&gt;
&lt;br /&gt;
[[File:Screenshot-.snapshot_-_bash.png]]&lt;br /&gt;
&lt;br /&gt;
For an example of file restoration, please see [[Snapshots:Example | this page]].&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
[[Category:Snapshots]]&lt;br /&gt;
__NOTOC__&lt;/div&gt;</summary>
		<author><name>Amgast</name></author>
	</entry>
	<entry>
		<id>https://wiki.umiacs.umd.edu/umiacs/index.php?title=Snapshots&amp;diff=5246</id>
		<title>Snapshots</title>
		<link rel="alternate" type="text/html" href="https://wiki.umiacs.umd.edu/umiacs/index.php?title=Snapshots&amp;diff=5246"/>
		<updated>2013-07-02T15:09:20Z</updated>

		<summary type="html">&lt;p&gt;Amgast: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;Snapshots are a implementation of copy on write that allows for a file system to quickly take a point in time copy of the file system and provide access to the data through a .snapshot directory.&lt;br /&gt;
&lt;br /&gt;
We provide [[Snapshots]] on our [[ONStor]], [[SnapshotsNexenta | Nexenta]] and [[Snapshots:FluidFS | FluidFS]] filers to certain file systems.&lt;br /&gt;
&lt;br /&gt;
Please see [[SnapshotFileSystems]] for a list of our file systems that have snapshots in the department.&lt;br /&gt;
&lt;br /&gt;
==Snapshot Policy==&lt;br /&gt;
&lt;br /&gt;
Our core file systems in the department are on a 4 hour snapshot cycle.  Snapshots are taken at,&lt;br /&gt;
&lt;br /&gt;
{| style=&amp;quot;color:green; background-color:#ffffcc;&amp;quot; cellpadding=&amp;quot;5&amp;quot; cellspacing=&amp;quot;0&amp;quot;&lt;br /&gt;
|  12am&lt;br /&gt;
| 4am&lt;br /&gt;
| 8am&lt;br /&gt;
| 12pm&lt;br /&gt;
| 4pm&lt;br /&gt;
| 8pm&lt;br /&gt;
|}&lt;br /&gt;
&lt;br /&gt;
We retain up to 8 hourly snapshots, 2 daily snapshots and 1 weekly snapshot.&lt;br /&gt;
&lt;br /&gt;
The [[OpenLAB]] filesystems on which snapshots are available are listed on the [[SnapshotFileSystems]] page.&lt;br /&gt;
&lt;br /&gt;
==Snapshot Restoring==&lt;br /&gt;
&lt;br /&gt;
If you have deleted a file by mistake and you need to get it back, you can use the snapshots directory to recopy the file.  This directory can typically be found in your home directory; it will be prepended by a ., so you will need to use the command &amp;quot;ls -a&amp;quot; to find it.  It will be one of three:&lt;br /&gt;
&lt;br /&gt;
* .snapshot for the [[ONStor]] (will be removed soon!) / [[Snapshots:NetApp | NetApp]] filers&lt;br /&gt;
* .snapshots for the [[Snapshots:FluidFS | FluidFS]] filer&lt;br /&gt;
* .zfs/snapshots for the [[SnapshotsNexenta | Nexenta]] / [[Snapshots:ZFS | ZFS]] filers&lt;br /&gt;
&lt;br /&gt;
The inside of one of these will look something like:&lt;br /&gt;
&lt;br /&gt;
[[File:Screenshot-.snapshot_-_bash.png]]&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
[[Category:Snapshots]]&lt;br /&gt;
__NOTOC__&lt;/div&gt;</summary>
		<author><name>Amgast</name></author>
	</entry>
	<entry>
		<id>https://wiki.umiacs.umd.edu/umiacs/index.php?title=Snapshots&amp;diff=5245</id>
		<title>Snapshots</title>
		<link rel="alternate" type="text/html" href="https://wiki.umiacs.umd.edu/umiacs/index.php?title=Snapshots&amp;diff=5245"/>
		<updated>2013-07-02T15:07:15Z</updated>

		<summary type="html">&lt;p&gt;Amgast: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;Snapshots are a implementation of copy on write that allows for a file system to quickly take a point in time copy of the file system and provide access to the data through a .snapshot directory.&lt;br /&gt;
&lt;br /&gt;
We provide [[Snapshots]] on our [[ONStor]], [[SnapshotsNexenta | Nexenta]] and [[Snapshots:FluidFS | FluidFS]] filers to certain file systems.&lt;br /&gt;
&lt;br /&gt;
Please see [[SnapshotFileSystems]] for a list of our file systems that have snapshots in the department.&lt;br /&gt;
&lt;br /&gt;
==Snapshot Policy==&lt;br /&gt;
&lt;br /&gt;
Our core file systems in the department are on a 4 hour snapshot cycle.  Snapshots are taken at,&lt;br /&gt;
&lt;br /&gt;
{| style=&amp;quot;color:green; background-color:#ffffcc;&amp;quot; cellpadding=&amp;quot;5&amp;quot; cellspacing=&amp;quot;0&amp;quot;&lt;br /&gt;
|  12am&lt;br /&gt;
| 4am&lt;br /&gt;
| 8am&lt;br /&gt;
| 12pm&lt;br /&gt;
| 4pm&lt;br /&gt;
| 8pm&lt;br /&gt;
|}&lt;br /&gt;
&lt;br /&gt;
We retain up to 8 hourly snapshots, 2 daily snapshots and 1 weekly snapshot.&lt;br /&gt;
&lt;br /&gt;
The [[OpenLAB]] filesystems on which snapshots are available are listed on the [[SnapshotFileSystems]] page.&lt;br /&gt;
&lt;br /&gt;
==Snapshot Restoring==&lt;br /&gt;
&lt;br /&gt;
If you have deleted a file by mistake and you need to get it back, you can use the snapshots directory to recopy the file.  This directory can typically be found in your home directory; it will be prepended by a ., so you will need to use the command &amp;quot;ls -a&amp;quot; to find it.  It will be one of three:&lt;br /&gt;
&lt;br /&gt;
* .snapshot for the [[ONStor]] (will be removed soon!) / [[Snapshots:NetApp | NetApp]] filers&lt;br /&gt;
* .snapshots for the [[Snapshots:FluidFS | FluidFS]] filer&lt;br /&gt;
* .zfs/snapshots for the [[SnapshotsNexenta | Nexenta]] / [[Snapshots:ZFS | ZFS]] filers&lt;br /&gt;
&lt;br /&gt;
The inside of one of these will look something like:&lt;br /&gt;
&lt;br /&gt;
[[File:Screenshot-.snapshot_-_bash.png]]&lt;br /&gt;
&lt;br /&gt;
An example:&lt;br /&gt;
&lt;br /&gt;
Changing to my quotes directory.&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty quotes]$ pwd&lt;br /&gt;
/nfshomes/derek/work/quotes&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
I see that i have a quote called  &#039;&#039;&#039;redhat_sole_source_2007.doc&#039;&#039;&#039;.&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty quotes]$ ls&lt;br /&gt;
dlt_pdf_quote2007.pdf  Quote_300086759.html         redhat_solesource.pdf&lt;br /&gt;
dlt_pdf_quote.pdf      Quote_353511914.html         soleSource2007.pdf&lt;br /&gt;
dlt_quote.pdf          Quote_367512608.html         soleSource.pdf&lt;br /&gt;
dy1014.xls             Quote_367884529.html         UMD_008.xls&lt;br /&gt;
Quote_250530976.html   redhat_sole_source_2007.doc&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty quotes]$ ls -la redhat_sole_source_2007.doc &lt;br /&gt;
-rw-r--r-- 1 derek derek 39936 Jan 23  2007 redhat_sole_source_2007.doc&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
I will remove it from the current file system.&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty quotes]$ rm redhat_sole_source_2007.doc &lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
As you can see it no longer is there.&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty quotes]$ ls &lt;br /&gt;
dlt_pdf_quote2007.pdf  Quote_250530976.html  Quote_367884529.html   UMD_008.xls&lt;br /&gt;
dlt_pdf_quote.pdf      Quote_300086759.html  redhat_solesource.pdf&lt;br /&gt;
dlt_quote.pdf          Quote_353511914.html  soleSource2007.pdf&lt;br /&gt;
dy1014.xls             Quote_367512608.html  soleSource.pdf&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
I am going to go into the last hourly snapshot &#039;&#039;&#039;hourly.0&#039;&#039;&#039;&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty quotes]$ cd .snapshot/hourly.0&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
As you can see the quote is still here.&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty hourly.0]$ ls&lt;br /&gt;
dlt_pdf_quote2007.pdf  Quote_300086759.html         redhat_solesource.pdf&lt;br /&gt;
dlt_pdf_quote.pdf      Quote_353511914.html         soleSource2007.pdf&lt;br /&gt;
dlt_quote.pdf          Quote_367512608.html         soleSource.pdf&lt;br /&gt;
dy1014.xls             Quote_367884529.html         UMD_008.xls&lt;br /&gt;
Quote_250530976.html   redhat_sole_source_2007.doc&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
I copy it back to the original directory.&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty hourly.0]$ cp redhat_sole_source_2007.doc /nfshomes/derek/work/quotes/&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
Change back to the original directory.&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty hourly.0]$ cd /nfshomes/derek/work/quotes/&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
And it is back.&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty quotes]$ ls&lt;br /&gt;
dlt_pdf_quote2007.pdf  Quote_300086759.html         redhat_solesource.pdf&lt;br /&gt;
dlt_pdf_quote.pdf      Quote_353511914.html         soleSource2007.pdf&lt;br /&gt;
dlt_quote.pdf          Quote_367512608.html         soleSource.pdf&lt;br /&gt;
dy1014.xls             Quote_367884529.html         UMD_008.xls&lt;br /&gt;
Quote_250530976.html   redhat_sole_source_2007.doc&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
[[Category:Snapshots]]&lt;br /&gt;
__NOTOC__&lt;/div&gt;</summary>
		<author><name>Amgast</name></author>
	</entry>
	<entry>
		<id>https://wiki.umiacs.umd.edu/umiacs/index.php?title=File:Screenshot-.snapshot_-_bash.png&amp;diff=5244</id>
		<title>File:Screenshot-.snapshot - bash.png</title>
		<link rel="alternate" type="text/html" href="https://wiki.umiacs.umd.edu/umiacs/index.php?title=File:Screenshot-.snapshot_-_bash.png&amp;diff=5244"/>
		<updated>2013-07-02T15:06:29Z</updated>

		<summary type="html">&lt;p&gt;Amgast: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;&lt;/div&gt;</summary>
		<author><name>Amgast</name></author>
	</entry>
	<entry>
		<id>https://wiki.umiacs.umd.edu/umiacs/index.php?title=Snapshots&amp;diff=5242</id>
		<title>Snapshots</title>
		<link rel="alternate" type="text/html" href="https://wiki.umiacs.umd.edu/umiacs/index.php?title=Snapshots&amp;diff=5242"/>
		<updated>2013-07-01T21:31:21Z</updated>

		<summary type="html">&lt;p&gt;Amgast: /* Snapshot Restoring */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;Snapshots are a implementation of copy on write that allows for a file system to quickly take a point in time copy of the file system and provide access to the data through a .snapshot directory.&lt;br /&gt;
&lt;br /&gt;
We provide [[Snapshots]] on our [[ONStor]], [[SnapshotsNexenta | Nexenta]] and [[Snapshots:FluidFS | FluidFS]] filers to certain file systems.&lt;br /&gt;
&lt;br /&gt;
Please see [[SnapshotFileSystems]] for a list of our file systems that have snapshots in the department.&lt;br /&gt;
&lt;br /&gt;
==Snapshot Policy==&lt;br /&gt;
&lt;br /&gt;
Our core file systems in the department are on a 4 hour snapshot cycle.  Snapshots are taken at,&lt;br /&gt;
&lt;br /&gt;
{| style=&amp;quot;color:green; background-color:#ffffcc;&amp;quot; cellpadding=&amp;quot;5&amp;quot; cellspacing=&amp;quot;0&amp;quot;&lt;br /&gt;
|  12am&lt;br /&gt;
| 4am&lt;br /&gt;
| 8am&lt;br /&gt;
| 12pm&lt;br /&gt;
| 4pm&lt;br /&gt;
| 8pm&lt;br /&gt;
|}&lt;br /&gt;
&lt;br /&gt;
We retain up to 8 hourly snapshots, 2 daily snapshots and 1 weekly snapshot.&lt;br /&gt;
&lt;br /&gt;
The [[OpenLAB]] filesystems on which snapshots are available are listed on the [[SnapshotFileSystems]] page.&lt;br /&gt;
&lt;br /&gt;
==Snapshot Restoring==&lt;br /&gt;
&lt;br /&gt;
If you have deleted a file by mistake and you need to get it back, you can use the snapshots directory to recopy the file.  This directory can typically be found in your home directory; it will be prepended by a ., so you will need to use the command &amp;quot;ls -a&amp;quot; to find it.  It will be one of three:&lt;br /&gt;
&lt;br /&gt;
* .snapshot for the [[ONStor]] (will be removed soon!) / [[Snapshots:NetApp | NetApp]] filers&lt;br /&gt;
* .snapshots for the [[Snapshots:FluidFS | FluidFS]] filer&lt;br /&gt;
* .zfs/snapshots for the [[SnapshotsNexenta | Nexenta]] / [[Snapshots:ZFS | ZFS]] filers&lt;br /&gt;
&lt;br /&gt;
An example:&lt;br /&gt;
&lt;br /&gt;
Changing to my quotes directory.&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty quotes]$ pwd&lt;br /&gt;
/nfshomes/derek/work/quotes&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
I see that i have a quote called  &#039;&#039;&#039;redhat_sole_source_2007.doc&#039;&#039;&#039;.&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty quotes]$ ls&lt;br /&gt;
dlt_pdf_quote2007.pdf  Quote_300086759.html         redhat_solesource.pdf&lt;br /&gt;
dlt_pdf_quote.pdf      Quote_353511914.html         soleSource2007.pdf&lt;br /&gt;
dlt_quote.pdf          Quote_367512608.html         soleSource.pdf&lt;br /&gt;
dy1014.xls             Quote_367884529.html         UMD_008.xls&lt;br /&gt;
Quote_250530976.html   redhat_sole_source_2007.doc&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty quotes]$ ls -la redhat_sole_source_2007.doc &lt;br /&gt;
-rw-r--r-- 1 derek derek 39936 Jan 23  2007 redhat_sole_source_2007.doc&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
I will remove it from the current file system.&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty quotes]$ rm redhat_sole_source_2007.doc &lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
As you can see it no longer is there.&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty quotes]$ ls &lt;br /&gt;
dlt_pdf_quote2007.pdf  Quote_250530976.html  Quote_367884529.html   UMD_008.xls&lt;br /&gt;
dlt_pdf_quote.pdf      Quote_300086759.html  redhat_solesource.pdf&lt;br /&gt;
dlt_quote.pdf          Quote_353511914.html  soleSource2007.pdf&lt;br /&gt;
dy1014.xls             Quote_367512608.html  soleSource.pdf&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
I am going to go into the last hourly snapshot &#039;&#039;&#039;hourly.0&#039;&#039;&#039;&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty quotes]$ cd .snapshot/hourly.0&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
As you can see the quote is still here.&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty hourly.0]$ ls&lt;br /&gt;
dlt_pdf_quote2007.pdf  Quote_300086759.html         redhat_solesource.pdf&lt;br /&gt;
dlt_pdf_quote.pdf      Quote_353511914.html         soleSource2007.pdf&lt;br /&gt;
dlt_quote.pdf          Quote_367512608.html         soleSource.pdf&lt;br /&gt;
dy1014.xls             Quote_367884529.html         UMD_008.xls&lt;br /&gt;
Quote_250530976.html   redhat_sole_source_2007.doc&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
I copy it back to the original directory.&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty hourly.0]$ cp redhat_sole_source_2007.doc /nfshomes/derek/work/quotes/&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
Change back to the original directory.&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty hourly.0]$ cd /nfshomes/derek/work/quotes/&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
And it is back.&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty quotes]$ ls&lt;br /&gt;
dlt_pdf_quote2007.pdf  Quote_300086759.html         redhat_solesource.pdf&lt;br /&gt;
dlt_pdf_quote.pdf      Quote_353511914.html         soleSource2007.pdf&lt;br /&gt;
dlt_quote.pdf          Quote_367512608.html         soleSource.pdf&lt;br /&gt;
dy1014.xls             Quote_367884529.html         UMD_008.xls&lt;br /&gt;
Quote_250530976.html   redhat_sole_source_2007.doc&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
[[Category:Snapshots]]&lt;br /&gt;
__NOTOC__&lt;/div&gt;</summary>
		<author><name>Amgast</name></author>
	</entry>
	<entry>
		<id>https://wiki.umiacs.umd.edu/umiacs/index.php?title=Snapshots&amp;diff=5241</id>
		<title>Snapshots</title>
		<link rel="alternate" type="text/html" href="https://wiki.umiacs.umd.edu/umiacs/index.php?title=Snapshots&amp;diff=5241"/>
		<updated>2013-07-01T21:28:45Z</updated>

		<summary type="html">&lt;p&gt;Amgast: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;Snapshots are a implementation of copy on write that allows for a file system to quickly take a point in time copy of the file system and provide access to the data through a .snapshot directory.&lt;br /&gt;
&lt;br /&gt;
We provide [[Snapshots]] on our [[ONStor]], [[SnapshotsNexenta | Nexenta]] and [[Snapshots:FluidFS | FluidFS]] filers to certain file systems.&lt;br /&gt;
&lt;br /&gt;
Please see [[SnapshotFileSystems]] for a list of our file systems that have snapshots in the department.&lt;br /&gt;
&lt;br /&gt;
==Snapshot Policy==&lt;br /&gt;
&lt;br /&gt;
Our core file systems in the department are on a 4 hour snapshot cycle.  Snapshots are taken at,&lt;br /&gt;
&lt;br /&gt;
{| style=&amp;quot;color:green; background-color:#ffffcc;&amp;quot; cellpadding=&amp;quot;5&amp;quot; cellspacing=&amp;quot;0&amp;quot;&lt;br /&gt;
|  12am&lt;br /&gt;
| 4am&lt;br /&gt;
| 8am&lt;br /&gt;
| 12pm&lt;br /&gt;
| 4pm&lt;br /&gt;
| 8pm&lt;br /&gt;
|}&lt;br /&gt;
&lt;br /&gt;
We retain up to 8 hourly snapshots, 2 daily snapshots and 1 weekly snapshot.&lt;br /&gt;
&lt;br /&gt;
The [[OpenLAB]] filesystems on which snapshots are available are listed on the [[SnapshotFileSystems]] page.&lt;br /&gt;
&lt;br /&gt;
==Snapshot Restoring==&lt;br /&gt;
&lt;br /&gt;
If you have deleted a file by mistake and you need to get it back, you can use the snapshots directory to recopy the file.  This directory can typically be found in your home directory; it will be prepended by a ., so you will need to use the command &amp;quot;ls -a&amp;quot; to find it.  It will be one of three:&lt;br /&gt;
&lt;br /&gt;
* .snapshot for the [[ONStor]] (will be removed soon!) / [[Snapshots:NetApp | NetApp]] filers&lt;br /&gt;
* .snapshots for the [[Snapshots:FluidFS | FluidFS]] filer&lt;br /&gt;
* .zfs/snapshots for the [[SnapshotsNexenta | Nexenta]] / [[Snapshots:ZFS | ZFS]] filers&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
Changing to my quotes directory.&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty quotes]$ pwd&lt;br /&gt;
/nfshomes/derek/work/quotes&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
I see that i have a quote called  &#039;&#039;&#039;redhat_sole_source_2007.doc&#039;&#039;&#039;.&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty quotes]$ ls&lt;br /&gt;
dlt_pdf_quote2007.pdf  Quote_300086759.html         redhat_solesource.pdf&lt;br /&gt;
dlt_pdf_quote.pdf      Quote_353511914.html         soleSource2007.pdf&lt;br /&gt;
dlt_quote.pdf          Quote_367512608.html         soleSource.pdf&lt;br /&gt;
dy1014.xls             Quote_367884529.html         UMD_008.xls&lt;br /&gt;
Quote_250530976.html   redhat_sole_source_2007.doc&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty quotes]$ ls -la redhat_sole_source_2007.doc &lt;br /&gt;
-rw-r--r-- 1 derek derek 39936 Jan 23  2007 redhat_sole_source_2007.doc&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
I will remove it from the current file system.&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty quotes]$ rm redhat_sole_source_2007.doc &lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
As you can see it no longer is there.&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty quotes]$ ls &lt;br /&gt;
dlt_pdf_quote2007.pdf  Quote_250530976.html  Quote_367884529.html   UMD_008.xls&lt;br /&gt;
dlt_pdf_quote.pdf      Quote_300086759.html  redhat_solesource.pdf&lt;br /&gt;
dlt_quote.pdf          Quote_353511914.html  soleSource2007.pdf&lt;br /&gt;
dy1014.xls             Quote_367512608.html  soleSource.pdf&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
I am going to go into the last hourly snapshot &#039;&#039;&#039;hourly.0&#039;&#039;&#039;&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty quotes]$ cd .snapshot/hourly.0&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
As you can see the quote is still here.&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty hourly.0]$ ls&lt;br /&gt;
dlt_pdf_quote2007.pdf  Quote_300086759.html         redhat_solesource.pdf&lt;br /&gt;
dlt_pdf_quote.pdf      Quote_353511914.html         soleSource2007.pdf&lt;br /&gt;
dlt_quote.pdf          Quote_367512608.html         soleSource.pdf&lt;br /&gt;
dy1014.xls             Quote_367884529.html         UMD_008.xls&lt;br /&gt;
Quote_250530976.html   redhat_sole_source_2007.doc&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
I copy it back to the original directory.&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty hourly.0]$ cp redhat_sole_source_2007.doc /nfshomes/derek/work/quotes/&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
Change back to the original directory.&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty hourly.0]$ cd /nfshomes/derek/work/quotes/&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
And it is back.&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
[derek@novelty quotes]$ ls&lt;br /&gt;
dlt_pdf_quote2007.pdf  Quote_300086759.html         redhat_solesource.pdf&lt;br /&gt;
dlt_pdf_quote.pdf      Quote_353511914.html         soleSource2007.pdf&lt;br /&gt;
dlt_quote.pdf          Quote_367512608.html         soleSource.pdf&lt;br /&gt;
dy1014.xls             Quote_367884529.html         UMD_008.xls&lt;br /&gt;
Quote_250530976.html   redhat_sole_source_2007.doc&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
[[Category:Snapshots]]&lt;br /&gt;
__NOTOC__&lt;/div&gt;</summary>
		<author><name>Amgast</name></author>
	</entry>
	<entry>
		<id>https://wiki.umiacs.umd.edu/umiacs/index.php?title=Screen&amp;diff=5239</id>
		<title>Screen</title>
		<link rel="alternate" type="text/html" href="https://wiki.umiacs.umd.edu/umiacs/index.php?title=Screen&amp;diff=5239"/>
		<updated>2013-06-27T19:08:58Z</updated>

		<summary type="html">&lt;p&gt;Amgast: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;=== Introduction ===&lt;br /&gt;
GNU Screen, or &amp;quot;screen&amp;quot;, is a window management program available on UMIACS UNIX hosts that splits a terminal into multiple windows that can each be used for a separate process.  This can be very useful when a process will be running for a long time since it can be allocated to one of the virtual terminals created by screen, and the others can be used for other shell tasks.&lt;br /&gt;
&lt;br /&gt;
=== Usage ===&lt;br /&gt;
To invoke screen, simply use the following command:&lt;br /&gt;
&#039;&#039;&#039;screen&#039;&#039;&#039;&lt;br /&gt;
&lt;br /&gt;
Alternatively, to start a program with screen:&lt;br /&gt;
&#039;&#039;&#039;screen vi program.c&#039;&#039;&#039;&lt;br /&gt;
&lt;br /&gt;
This will invoke screen and, in the newly-created window, start editing the file program.c in vi.&lt;br /&gt;
&lt;br /&gt;
Ctrl-A is the metacharacter for commands in screen; press it before every key command.  Some useful commands in screen:&lt;br /&gt;
&lt;br /&gt;
* Ctrl-A + C (Creates a new window.)&lt;br /&gt;
* Ctrl-A + [0-9] (Switches to the window corresonding to the number, window 0 is the first window initialized by screen.)&lt;br /&gt;
* Ctrl-A + &amp;quot; (Presents a selection of screen windows from which to choose.)&lt;br /&gt;
* Ctrl-A + &amp;lt;SPC&amp;gt; / Ctrl-A + &amp;lt;BKSPC&amp;gt; (Switch to the next / previous window.)&lt;br /&gt;
* Ctrl-A + k (Kill the current window.)&lt;br /&gt;
* Ctrl-A + Ctrl-\ (Kill screen and all its windows.)&lt;br /&gt;
&lt;br /&gt;
See the documentation linked in this page to see a full list of Ctrl-A commands (5.1 Default Key Bindings).&lt;br /&gt;
&lt;br /&gt;
=== .screenrc ===&lt;br /&gt;
Similar to .bashrc, the file .screenrc in a user&#039;s home directory can be used to customize each screen session&#039;s startup behavior.  Commands listed in this file will be executed upon starting screen.  See the link to documentation on screen at the bottom of this page for more information about screen commands (5.2 Command Summary).&lt;br /&gt;
&lt;br /&gt;
=== Useful Links ===&lt;br /&gt;
* [[http://www.gnu.org/software/screen/]] - The main page at www.gnu.org.&lt;br /&gt;
* [[http://www.gnu.org/software/screen/manual/screen.txt]] - GNU Screen documentation (also accessed through &#039;&#039;&#039;man screen&#039;&#039;&#039;).&lt;/div&gt;</summary>
		<author><name>Amgast</name></author>
	</entry>
	<entry>
		<id>https://wiki.umiacs.umd.edu/umiacs/index.php?title=Screen&amp;diff=5238</id>
		<title>Screen</title>
		<link rel="alternate" type="text/html" href="https://wiki.umiacs.umd.edu/umiacs/index.php?title=Screen&amp;diff=5238"/>
		<updated>2013-06-27T19:01:16Z</updated>

		<summary type="html">&lt;p&gt;Amgast: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;=== Introduction ===&lt;br /&gt;
GNU Screen, or &amp;quot;screen&amp;quot;, is a window management program available on UMIACS UNIX hosts that splits a terminal into multiple windows that can each be used for a separate process.  This can be very useful when a process will be running for a long time since it can be allocated to one of the virtual terminals created by screen, and the others can be used for other shell tasks.&lt;br /&gt;
&lt;br /&gt;
=== Usage ===&lt;br /&gt;
To invoke screen, simply use the following command:&lt;br /&gt;
&#039;&#039;&#039;screen&#039;&#039;&#039;&lt;br /&gt;
&lt;br /&gt;
Alternatively, to start a program with screen:&lt;br /&gt;
&#039;&#039;&#039;screen vi program.c&#039;&#039;&#039;&lt;br /&gt;
&lt;br /&gt;
This will invoke screen and, in the newly-created window, start editing the file program.c in vi.&lt;br /&gt;
&lt;br /&gt;
Ctrl-A is the metacharacter for commands in screen; press it before every key command.  Some useful commands in screen:&lt;br /&gt;
&lt;br /&gt;
* Ctrl-A + C (Creates a new window.)&lt;br /&gt;
* Ctrl-A + [0-9] (Switches to the window corresonding to the number, window 0 is the first window initialized by screen.)&lt;br /&gt;
* Ctrl-A + &amp;quot; (Presents a selection of screen windows from which to choose.)&lt;br /&gt;
* Ctrl-A + k (Kill the current window.)&lt;/div&gt;</summary>
		<author><name>Amgast</name></author>
	</entry>
	<entry>
		<id>https://wiki.umiacs.umd.edu/umiacs/index.php?title=Screen&amp;diff=5237</id>
		<title>Screen</title>
		<link rel="alternate" type="text/html" href="https://wiki.umiacs.umd.edu/umiacs/index.php?title=Screen&amp;diff=5237"/>
		<updated>2013-06-27T18:59:13Z</updated>

		<summary type="html">&lt;p&gt;Amgast: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;=== Introduction ===&lt;br /&gt;
GNU Screen, or &amp;quot;screen&amp;quot;, is a window management program available on UMIACS UNIX hosts that splits a terminal into multiple windows that can each be used for a separate process.  This can be very useful when a process will be running for a long time since it can be allocated to one of the virtual terminals created by screen, and the others can be used for other shell tasks.&lt;br /&gt;
&lt;br /&gt;
=== Usage ===&lt;br /&gt;
To invoke screen, simply use the following command:&lt;br /&gt;
&#039;&#039;&#039;screen&#039;&#039;&#039;&lt;br /&gt;
&lt;br /&gt;
Alternatively, to start a program with screen:&lt;br /&gt;
&#039;&#039;&#039;screen vi program.c&#039;&#039;&#039;&lt;br /&gt;
&lt;br /&gt;
This will invoke screen and, in the newly-created window, start editing the file program.c in vi.&lt;br /&gt;
&lt;br /&gt;
Ctrl-A is the metacharacter for commands in screen; press it before every key command.  Some useful commands in screen:&lt;br /&gt;
&lt;br /&gt;
* Ctrl-A + C (Creates a new window.)&lt;br /&gt;
* Ctrl-A + [0-9] (Switches to the window corresonding to the number, window 0 is the first window initialized by screen.)&lt;br /&gt;
*&lt;/div&gt;</summary>
		<author><name>Amgast</name></author>
	</entry>
	<entry>
		<id>https://wiki.umiacs.umd.edu/umiacs/index.php?title=Screen&amp;diff=5236</id>
		<title>Screen</title>
		<link rel="alternate" type="text/html" href="https://wiki.umiacs.umd.edu/umiacs/index.php?title=Screen&amp;diff=5236"/>
		<updated>2013-06-27T18:58:35Z</updated>

		<summary type="html">&lt;p&gt;Amgast: /* Usage */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;=== Introduction ===&lt;br /&gt;
GNU Screen, or &amp;quot;screen&amp;quot;, is a window management program available on UMIACS UNIX hosts that splits a terminal into multiple windows that can each be used for a separate process.  This can be very useful when a process will be running for a long time since it can be allocated to one of the virtual terminals created by screen, and the others can be used for other shell tasks.&lt;br /&gt;
&lt;br /&gt;
=== Usage ===&lt;br /&gt;
To invoke screen, simply use the following command:&lt;br /&gt;
&lt;br /&gt;
&amp;lt;nowiki&amp;gt;screen&amp;lt;/nowiki&amp;gt;&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
Alternatively, to start a program with screen:&lt;br /&gt;
&lt;br /&gt;
&amp;lt;nowiki&amp;gt;screen vi program.c&amp;lt;/nowiki&amp;gt;&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
This will invoke screen and, in the newly-created window, start editing the file program.c in vi.&lt;br /&gt;
&lt;br /&gt;
Ctrl-A is the metacharacter for commands in screen; press it before every key command.  Some useful commands in screen:&lt;br /&gt;
&lt;br /&gt;
* Ctrl-A + C (Creates a new window.)&lt;br /&gt;
* Ctrl-A + [0-9] (Switches to the window corresonding to the number, window 0 is the first window initialized by screen.)&lt;br /&gt;
*&lt;/div&gt;</summary>
		<author><name>Amgast</name></author>
	</entry>
	<entry>
		<id>https://wiki.umiacs.umd.edu/umiacs/index.php?title=Screen&amp;diff=5235</id>
		<title>Screen</title>
		<link rel="alternate" type="text/html" href="https://wiki.umiacs.umd.edu/umiacs/index.php?title=Screen&amp;diff=5235"/>
		<updated>2013-06-27T18:58:19Z</updated>

		<summary type="html">&lt;p&gt;Amgast: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;=== Introduction ===&lt;br /&gt;
GNU Screen, or &amp;quot;screen&amp;quot;, is a window management program available on UMIACS UNIX hosts that splits a terminal into multiple windows that can each be used for a separate process.  This can be very useful when a process will be running for a long time since it can be allocated to one of the virtual terminals created by screen, and the others can be used for other shell tasks.&lt;br /&gt;
&lt;br /&gt;
=== Usage ===&lt;br /&gt;
To invoke screen, simply use the following command:&lt;br /&gt;
&lt;br /&gt;
&amp;lt;nowiki&amp;gt;screen&amp;lt;/nowiki&amp;gt;&lt;br /&gt;
&lt;br /&gt;
Alternatively, to start a program with screen:&lt;br /&gt;
&lt;br /&gt;
&amp;lt;nowiki&amp;gt;screen vi program.c&amp;lt;/nowiki&amp;gt;&lt;br /&gt;
&lt;br /&gt;
This will invoke screen and, in the newly-created window, start editing the file program.c in vi.&lt;br /&gt;
&lt;br /&gt;
Ctrl-A is the metacharacter for commands in screen; press it before every key command.  Some useful commands in screen:&lt;br /&gt;
&lt;br /&gt;
* Ctrl-A + C (Creates a new window.)&lt;br /&gt;
* Ctrl-A + [0-9] (Switches to the window corresonding to the number, window 0 is the first window initialized by screen.)&lt;br /&gt;
*&lt;/div&gt;</summary>
		<author><name>Amgast</name></author>
	</entry>
	<entry>
		<id>https://wiki.umiacs.umd.edu/umiacs/index.php?title=Screen&amp;diff=5234</id>
		<title>Screen</title>
		<link rel="alternate" type="text/html" href="https://wiki.umiacs.umd.edu/umiacs/index.php?title=Screen&amp;diff=5234"/>
		<updated>2013-06-27T18:55:19Z</updated>

		<summary type="html">&lt;p&gt;Amgast: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;=== Introduction ===&lt;br /&gt;
GNU Screen, or &amp;quot;screen&amp;quot;, is a window management program available on UMIACS UNIX hosts that splits a terminal into multiple windows that can each be used for a separate process.  This can be very useful when a process will be running for a long time since it can be allocated to one of the virtual terminals created by screen, and the others can be used for other shell tasks.&lt;br /&gt;
&lt;br /&gt;
=== Usage ===&lt;br /&gt;
To invoke screen, simply use the following command:&lt;br /&gt;
&lt;br /&gt;
&amp;lt;nowiki&amp;gt;screen&amp;lt;/nowiki&amp;gt;&lt;br /&gt;
&lt;br /&gt;
Alternatively, to start a program with screen:&lt;br /&gt;
&lt;br /&gt;
&amp;lt;nowiki&amp;gt;screen vi program.c&amp;lt;/nowiki&amp;gt;&lt;br /&gt;
&lt;br /&gt;
This will invoke screen and, in the newly-created window, start editing the file program.c in vi.&lt;br /&gt;
&lt;br /&gt;
Ctrl-A is the metacharacter for commands in screen; press it before every key command.  Some useful commands in screen:&lt;/div&gt;</summary>
		<author><name>Amgast</name></author>
	</entry>
	<entry>
		<id>https://wiki.umiacs.umd.edu/umiacs/index.php?title=Screen&amp;diff=5233</id>
		<title>Screen</title>
		<link rel="alternate" type="text/html" href="https://wiki.umiacs.umd.edu/umiacs/index.php?title=Screen&amp;diff=5233"/>
		<updated>2013-06-27T18:55:11Z</updated>

		<summary type="html">&lt;p&gt;Amgast: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;=== Introduction ===&lt;br /&gt;
GNU Screen, or &amp;quot;screen&amp;quot;, is a window management program available on UMIACS UNIX hosts that splits a terminal into multiple windows that can each be used for a separate process.  This can be very useful when a process will be running for a long time since it can be allocated to one of the virtual terminals created by screen, and the others can be used for other shell tasks.&lt;br /&gt;
&lt;br /&gt;
=== Usage ===&lt;br /&gt;
To invoke screen, simply use the following command:&lt;br /&gt;
&amp;lt;nowiki&amp;gt;screen&amp;lt;/nowiki&amp;gt;&lt;br /&gt;
Alternatively, to start a program with screen:&lt;br /&gt;
&amp;lt;nowiki&amp;gt;screen vi program.c&amp;lt;/nowiki&amp;gt;&lt;br /&gt;
This will invoke screen and, in the newly-created window, start editing the file program.c in vi.&lt;br /&gt;
&lt;br /&gt;
Ctrl-A is the metacharacter for commands in screen; press it before every key command.  Some useful commands in screen:&lt;/div&gt;</summary>
		<author><name>Amgast</name></author>
	</entry>
	<entry>
		<id>https://wiki.umiacs.umd.edu/umiacs/index.php?title=Screen&amp;diff=5232</id>
		<title>Screen</title>
		<link rel="alternate" type="text/html" href="https://wiki.umiacs.umd.edu/umiacs/index.php?title=Screen&amp;diff=5232"/>
		<updated>2013-06-27T18:54:34Z</updated>

		<summary type="html">&lt;p&gt;Amgast: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;=== Introduction ===&lt;br /&gt;
GNU Screen, or &amp;quot;screen&amp;quot;, is a window management program available on UMIACS UNIX hosts that splits a terminal into multiple windows that can each be used for a separate process.  This can be very useful when a process will be running for a long time since it can be allocated to one of the virtual terminals created by screen, and the others can be used for other shell tasks.&lt;br /&gt;
&lt;br /&gt;
=== Usage ===&lt;br /&gt;
To invoke screen, simply use the following command:&lt;br /&gt;
&lt;br /&gt;
&amp;lt;nowiki&amp;gt;screen&amp;lt;/nowiki&amp;gt;&lt;br /&gt;
&lt;br /&gt;
Alternatively, to start a program with screen:&lt;br /&gt;
&lt;br /&gt;
&amp;lt;nowiki&amp;gt;screen vi program.c&amp;lt;/nowiki&amp;gt;&lt;br /&gt;
&lt;br /&gt;
This will invoke screen and, in the newly-created window, start editing the file program.c in vi.&lt;br /&gt;
&lt;br /&gt;
Ctrl-A is the metacharacter for commands in screen; press it before every key command.  Some useful commands in screen:&lt;/div&gt;</summary>
		<author><name>Amgast</name></author>
	</entry>
	<entry>
		<id>https://wiki.umiacs.umd.edu/umiacs/index.php?title=Screen&amp;diff=5231</id>
		<title>Screen</title>
		<link rel="alternate" type="text/html" href="https://wiki.umiacs.umd.edu/umiacs/index.php?title=Screen&amp;diff=5231"/>
		<updated>2013-06-27T18:54:26Z</updated>

		<summary type="html">&lt;p&gt;Amgast: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;=== Introduction ===&lt;br /&gt;
GNU Screen, or &amp;quot;screen&amp;quot;, is a window management program available on UMIACS UNIX hosts that splits a terminal into multiple windows that can each be used for a separate process.  This can be very useful when a process will be running for a long time since it can be allocated to one of the virtual terminals created by screen, and the others can be used for other shell tasks.&lt;br /&gt;
&lt;br /&gt;
=== Usage ===&lt;br /&gt;
To invoke screen, simply use the following command:&lt;br /&gt;
&lt;br /&gt;
&amp;lt;nowiki&amp;gt;screen&amp;lt;/nowiki&amp;gt;&lt;br /&gt;
&lt;br /&gt;
Alternatively, to start a program with screen:&lt;br /&gt;
&lt;br /&gt;
&amp;lt;nowiki&amp;gt;screen vi program.c&amp;lt;/nowiki&amp;gt;&lt;br /&gt;
&lt;br /&gt;
This will invoke screen and, in the newly-created window, start editing the file program.c in vi.&lt;br /&gt;
&lt;br /&gt;
Ctrl-A is the metacharacter for commands in screen; press it before every key command.  Some useful commands in screen:&lt;br /&gt;
&lt;br /&gt;
&amp;lt;nowiki&amp;gt;Ctrl-A + C or Ctrl-A + Ctrl-C =&amp;gt; Create a new window in screen.&lt;br /&gt;
Ctrl-A + [0-9] =&amp;gt; Switch to a certain window in screen.  The window upon invocation of screen is 0, those created afterwards are 1, 2, 3, etc.&lt;br /&gt;
&amp;lt;/nowiki&amp;gt;&lt;/div&gt;</summary>
		<author><name>Amgast</name></author>
	</entry>
	<entry>
		<id>https://wiki.umiacs.umd.edu/umiacs/index.php?title=Screen&amp;diff=5230</id>
		<title>Screen</title>
		<link rel="alternate" type="text/html" href="https://wiki.umiacs.umd.edu/umiacs/index.php?title=Screen&amp;diff=5230"/>
		<updated>2013-06-27T18:54:09Z</updated>

		<summary type="html">&lt;p&gt;Amgast: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;=== Introduction ===&lt;br /&gt;
GNU Screen, or &amp;quot;screen&amp;quot;, is a window management program available on UMIACS UNIX hosts that splits a terminal into multiple windows that can each be used for a separate process.  This can be very useful when a process will be running for a long time since it can be allocated to one of the virtual terminals created by screen, and the others can be used for other shell tasks.&lt;br /&gt;
&lt;br /&gt;
=== Usage ===&lt;br /&gt;
To invoke screen, simply use the following command:&lt;br /&gt;
&lt;br /&gt;
&amp;lt;nowiki&amp;gt;screen&amp;lt;/nowiki&amp;gt;&lt;br /&gt;
&lt;br /&gt;
Alternatively, to start a program with screen:&lt;br /&gt;
&lt;br /&gt;
&amp;lt;nowiki&amp;gt;screen vi program.c&amp;lt;/nowiki&amp;gt;&lt;br /&gt;
&lt;br /&gt;
This will invoke screen and, in the newly-created window, start editing the file program.c in vi.&lt;br /&gt;
&lt;br /&gt;
Ctrl-A is the metacharacter for commands in screen; press it before every key command.  Some useful commands in screen:&lt;br /&gt;
&lt;br /&gt;
&amp;lt;nowiki&amp;gt;Ctrl-A + C or Ctrl-A + Ctrl-C =&amp;gt; Create a new window in screen.&lt;br /&gt;
Ctrl-A + [0-9] =&amp;gt; Switch to a certain window in screen.  The window upon invocation of screen is 0, those created afterwards are 1, 2, 3, etc.&lt;/div&gt;</summary>
		<author><name>Amgast</name></author>
	</entry>
	<entry>
		<id>https://wiki.umiacs.umd.edu/umiacs/index.php?title=Screen&amp;diff=5229</id>
		<title>Screen</title>
		<link rel="alternate" type="text/html" href="https://wiki.umiacs.umd.edu/umiacs/index.php?title=Screen&amp;diff=5229"/>
		<updated>2013-06-27T18:50:26Z</updated>

		<summary type="html">&lt;p&gt;Amgast: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;=== Introduction ===&lt;br /&gt;
GNU Screen, or &amp;quot;screen&amp;quot;, is a window management program available on UMIACS UNIX hosts that splits a terminal into multiple windows that can each be used for a separate process.  This can be very useful when a process will be running for a long time since it can be allocated to one of the virtual terminals created by screen, and the others can be used for other shell tasks.&lt;br /&gt;
&lt;br /&gt;
=== Usage ===&lt;br /&gt;
To invoke screen, simply use the following command:&lt;br /&gt;
&lt;br /&gt;
        &amp;lt;nowiki&amp;gt;screen&amp;lt;/nowiki&amp;gt;&lt;br /&gt;
&lt;br /&gt;
Alternatively, to start a program with screen:&lt;br /&gt;
&lt;br /&gt;
        &amp;lt;nowiki&amp;gt;screen vi program.c&amp;lt;/nowiki&amp;gt;&lt;br /&gt;
&lt;br /&gt;
This will invoke screen and, in the newly-created window, start editing the file program.c in vi.&lt;/div&gt;</summary>
		<author><name>Amgast</name></author>
	</entry>
	<entry>
		<id>https://wiki.umiacs.umd.edu/umiacs/index.php?title=Screen&amp;diff=5228</id>
		<title>Screen</title>
		<link rel="alternate" type="text/html" href="https://wiki.umiacs.umd.edu/umiacs/index.php?title=Screen&amp;diff=5228"/>
		<updated>2013-06-27T18:41:28Z</updated>

		<summary type="html">&lt;p&gt;Amgast: Created page with &amp;quot;=== Introduction === GNU Screen, or &amp;quot;screen&amp;quot;, is a window management program available on UMIACS UNIX hosts that splits a terminal into multiple windows that can each be used ...&amp;quot;&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;=== Introduction ===&lt;br /&gt;
GNU Screen, or &amp;quot;screen&amp;quot;, is a window management program available on UMIACS UNIX hosts that splits a terminal into multiple windows that can each be used for a separate process.  This can be very useful when a process will be running for a long time since it can be allocated to one of the virtual terminals created by screen, and the others can be used for other shell tasks.&lt;br /&gt;
&lt;br /&gt;
=== Usage ===&lt;/div&gt;</summary>
		<author><name>Amgast</name></author>
	</entry>
	<entry>
		<id>https://wiki.umiacs.umd.edu/umiacs/index.php?title=Ubuntu/SoftwareCenter&amp;diff=5210</id>
		<title>Ubuntu/SoftwareCenter</title>
		<link rel="alternate" type="text/html" href="https://wiki.umiacs.umd.edu/umiacs/index.php?title=Ubuntu/SoftwareCenter&amp;diff=5210"/>
		<updated>2013-05-31T19:26:52Z</updated>

		<summary type="html">&lt;p&gt;Amgast: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;The Ubuntu Software Center provides a mechanism to install many different applications and libraries to your Ubuntu desktop without requiring &#039;su&#039; or &#039;sudo&#039; (administrative) access. More information can be found at the features page [http://www.ubuntu.com/ubuntu/features/find-more-apps here]&lt;br /&gt;
&lt;br /&gt;
===Permissions and Troubleshooting===&lt;br /&gt;
If your Ubuntu machine is UMIACS-supported and you are the primary user, access to the Software Center should have been granted to you at the time the machine was installed. If you find that you do not have adequate permissions to install software from this portal, please send mail to the [[HelpDesk|UMIACS Helpdesk]], [mailto:staff@umiacs.umd.edu staff@umiacs.umd.edu]. Please provide both your hostname and username. &lt;br /&gt;
&lt;br /&gt;
===Accessing in Ubuntu 12.04 (Precise Pangolin)===&lt;br /&gt;
In 12.04, one way of launching the Ubuntu Software Center is by using the Dashboard. The dashboard can be opened by typing the meta key (commonly referred to as the Windows key). This will provide you with a search box. Type in &amp;quot;Software Center&amp;quot; and it should be within the first few results. You can alternatively launch it from the terminal by typing &amp;quot;software-center&amp;quot; (if it&#039;s not in your path, the location is /usr/bin/software-center)&lt;/div&gt;</summary>
		<author><name>Amgast</name></author>
	</entry>
	<entry>
		<id>https://wiki.umiacs.umd.edu/umiacs/index.php?title=OSSupport&amp;diff=5209</id>
		<title>OSSupport</title>
		<link rel="alternate" type="text/html" href="https://wiki.umiacs.umd.edu/umiacs/index.php?title=OSSupport&amp;diff=5209"/>
		<updated>2013-05-31T19:26:15Z</updated>

		<summary type="html">&lt;p&gt;Amgast: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;UMIACS Supports the following Operating Systems&lt;br /&gt;
&lt;br /&gt;
==Linux==&lt;br /&gt;
&lt;br /&gt;
General [[LinuxFAQ]]&lt;br /&gt;
&lt;br /&gt;
* [[RHEL4|RedHat Enterprise Linux 4]]&lt;br /&gt;
* [[RHEL5|RedHat Enterprise Linux 5]]&lt;br /&gt;
* [[RHEL6|RedHat Enterprise Linux 6]]&lt;br /&gt;
* [[UbuntuPrecise|Ubuntu Precise 12.04 LTS]]&lt;br /&gt;
&lt;br /&gt;
==Windows==&lt;br /&gt;
* Windows XP&lt;br /&gt;
* Windows Server 2003&lt;br /&gt;
* Windows Server 2008&lt;br /&gt;
*[[Windows_7_Activation|Windows 7]]&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
==MacOSX==&lt;br /&gt;
&lt;br /&gt;
* MacOSX10.4&lt;br /&gt;
* MacOSX10.5&lt;br /&gt;
* MacOSX10.6&lt;br /&gt;
* MacOSX10.7&lt;/div&gt;</summary>
		<author><name>Amgast</name></author>
	</entry>
	<entry>
		<id>https://wiki.umiacs.umd.edu/umiacs/index.php?title=Matlab&amp;diff=5199</id>
		<title>Matlab</title>
		<link rel="alternate" type="text/html" href="https://wiki.umiacs.umd.edu/umiacs/index.php?title=Matlab&amp;diff=5199"/>
		<updated>2013-05-29T20:35:15Z</updated>

		<summary type="html">&lt;p&gt;Amgast: Removed references to Mac OS X 10.4&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;UMIACS has [[Matlab]] licenses that cover Linux, Windows and Mac.  To access them you have to be using a university owned computer. If you would like to run Matlab on a machine that is not University-owned, you can check the pricing through OIT/SLIC [http://www.oit.umd.edu/units/slic/products/mathworks/matlab.html here]&lt;br /&gt;
&lt;br /&gt;
==Linux==&lt;br /&gt;
Below are the different locations of Matlab across our supported linux workstations and servers.  The one in bold is our latest version.&lt;br /&gt;
&lt;br /&gt;
===RHEL5===&lt;br /&gt;
* /opt/matlab-r2007b&lt;br /&gt;
* /opt/matlab-r2008a&lt;br /&gt;
* /opt/matlab-r2008b&lt;br /&gt;
* /opt/matlab-r2009b&lt;br /&gt;
* /opt/matlab-r2010a&lt;br /&gt;
* /opt/matlab-r2010b&lt;br /&gt;
* /opt/matlab-r2011a&lt;br /&gt;
* /opt/matlab-r2011b&lt;br /&gt;
* /opt/matlab-r2012a&lt;br /&gt;
* /opt/matlab-r2012b&lt;br /&gt;
* &#039;&#039;&#039;/opt/matlab-r2013a&#039;&#039;&#039; (64-bit RHEL5 hosts only)&lt;br /&gt;
&lt;br /&gt;
===RHEL6/Ubuntu===&lt;br /&gt;
&lt;br /&gt;
* /opt/common/matlab-r2007b&lt;br /&gt;
* /opt/common/matlab-r2008a&lt;br /&gt;
* /opt/common/matlab-r2008b&lt;br /&gt;
* /opt/common/matlab-r2009b&lt;br /&gt;
* /opt/common/matlab-r2010a&lt;br /&gt;
* /opt/common/matlab-r2010b&lt;br /&gt;
* /opt/common/matlab-r2011a&lt;br /&gt;
* /opt/common/matlab-r2011b&lt;br /&gt;
* /opt/common/matlab-r2012a&lt;br /&gt;
* /opt/common/matlab-r2012b&lt;br /&gt;
* &#039;&#039;&#039;/opt/common/matlab-r2013a&#039;&#039;&#039; (64-bit hosts only)&lt;br /&gt;
&lt;br /&gt;
==Windows==&lt;br /&gt;
Below are the different locations of Matlab available for university-owned machines running Windows XP and Windows 7. The one in bold is the latest version we have available:&lt;br /&gt;
&lt;br /&gt;
* Matlab r2007a&lt;br /&gt;
* Matlab r2007b&lt;br /&gt;
* Matlab r2008a&lt;br /&gt;
* Matlab r2008b&lt;br /&gt;
* Matlab r2009a&lt;br /&gt;
* Matlab r2009b&lt;br /&gt;
* Matlab r2010a&lt;br /&gt;
* Matlab r2010b&lt;br /&gt;
* Matlab r2011a&lt;br /&gt;
* Matlab r2011b&lt;br /&gt;
* Matlab r2012a&lt;br /&gt;
* Matlab r2012b&lt;br /&gt;
* &#039;&#039;&#039;Matlab r2013a&#039;&#039;&#039;&lt;br /&gt;
&lt;br /&gt;
==OSX==&lt;br /&gt;
Below are the different locations of Matlab available for university-owned machines running OSX. We expect that all versions should run on OSX 10.6 and newer. The one in bold is the latest version we have available:&lt;br /&gt;
&lt;br /&gt;
* Matlab r2008a&lt;br /&gt;
* Matlab r2008b&lt;br /&gt;
* Matlab r2009b&lt;br /&gt;
* Matlab r2010a&lt;br /&gt;
* Matlab r2010b&lt;br /&gt;
* Matlab r2011b&lt;br /&gt;
* Matlab r2012a&lt;br /&gt;
* Matlab r2012b&lt;br /&gt;
* &#039;&#039;&#039;Matlab r2013a&#039;&#039;&#039;&lt;br /&gt;
&lt;br /&gt;
==License Troubleshooting==&lt;br /&gt;
&lt;br /&gt;
Campus has a limited number of seats for Matlab itself, as well as the various toolboxes. When calling functions in a toolbox, Matlab will automatically check out a license, making it temporarily unavailable to other users. Sometimes it&#039;s necessary to check the number of toolbox licenses available.&lt;br /&gt;
&lt;br /&gt;
===Windows License Troubleshooting===&lt;br /&gt;
On Windows machines, the necessary command is as follows. Please note that you may need to adjust the path to reflect the available Matlab versions and the installation path. Additionally, this assumes that you are using a 64-bit version. &amp;quot;win64&amp;quot; needs to adjusted to &amp;quot;win32&amp;quot; on a 32-bit installation:&lt;br /&gt;
 $MATLAB_PATH\bin\win64\lmutil lmstat -c &amp;quot;$MATLAB_PATH\licenses\network.lic&amp;quot; -f $TOOLBOX_SHORTNAME&lt;br /&gt;
&lt;br /&gt;
As an example, here is how to query Matlab r2009b on a 64-bit Windows XP host for the Aerospace Blockset Toolbox: &lt;br /&gt;
 C:\Program Files\matlab7.9r2009b\bin\win64\lmutil.exe lmstat -c &amp;quot;C:\Program Files\matlab7.9r2009b\licenses\network.lic&amp;quot; -f Aerospace_Blockset&lt;br /&gt;
&lt;br /&gt;
===Unix License Troubleshooting===&lt;br /&gt;
On Unix machines, the necessary command is as follows. Please note that you may need to adjust the path to reflect the available Matlab versions and the installation path. Additionally, this assumes that you are using a 64-bit version. &amp;quot;glnxa64&amp;quot; needs to adjusted to &amp;quot;glnx86&amp;quot; on a 32-bit installation::&lt;br /&gt;
 $MATLAB_PATH/bin/glnxa64/lmutil lmstat -c $MATLAB_PATH/licenses/network.lic -f $TOOLBOX_SHORTNAME&lt;br /&gt;
&lt;br /&gt;
As an example, here is how to query Matlab r2010b on our 64-bit RHEL5 hosts for the Parallel Computing Toolbox:&lt;br /&gt;
 /opt/matlab-r2010b/bin/glnxa64/lmutil lmstat -c /opt/matlab-r2010b/licenses/network.lic -f Distrib_Computing_Toolbox&lt;br /&gt;
&lt;br /&gt;
===Toolbox Shortnames===&lt;br /&gt;
The toolbox names themselves don&#039;t always work with this command; Rather, Matlab has a set of shortnames which can be passed to the lmstat command. The following are all the valid shortnames:&lt;br /&gt;
&lt;br /&gt;
 Aerospace_Blockset   &lt;br /&gt;
 Aerospace_Toolbox  &lt;br /&gt;
 Bioinformatics_Toolbox  &lt;br /&gt;
 Communication_Blocks  &lt;br /&gt;
 Communication_Toolbox  &lt;br /&gt;
 Compiler  &lt;br /&gt;
 Control_Toolbox  &lt;br /&gt;
 Curve_Fitting_Toolbox  &lt;br /&gt;
 Data_Acq_Toolbox  &lt;br /&gt;
 Database_Toolbox  &lt;br /&gt;
 Datafeed_Toolbox  &lt;br /&gt;
 Distrib_Computing_Toolbox  &lt;br /&gt;
 Econometrics_Toolbox  &lt;br /&gt;
 Excel_Link  &lt;br /&gt;
 Fin_Derivatives_Toolbox  &lt;br /&gt;
 Financial_Toolbox  &lt;br /&gt;
 Fixed_Income_Toolbox  &lt;br /&gt;
 Fixed_Point_Toolbox  &lt;br /&gt;
 GADS_Toolbox  &lt;br /&gt;
 Identification_Toolbox  &lt;br /&gt;
 Image_Acquisition_Toolbox  &lt;br /&gt;
 Image_Toolbox  &lt;br /&gt;
 Instr_Control_Toolbox  &lt;br /&gt;
 MAP_Toolbox  &lt;br /&gt;
 MATLAB  &lt;br /&gt;
 MATLAB_Builder_for_Java  &lt;br /&gt;
 MATLAB_Coder  &lt;br /&gt;
 MATLAB_Excel_Builder  &lt;br /&gt;
 MATLAB_Report_Gen  &lt;br /&gt;
 MPC_Toolbox  &lt;br /&gt;
 Neural_Network_Toolbox  &lt;br /&gt;
 Optimization_Toolbox  &lt;br /&gt;
 PDE_Toolbox  &lt;br /&gt;
 Real-Time_Workshop  &lt;br /&gt;
 Robust_Toolbox  &lt;br /&gt;
 Signal_Blocks  &lt;br /&gt;
 Signal_Toolbox  &lt;br /&gt;
 SimMechanics  &lt;br /&gt;
 Simscape  &lt;br /&gt;
 SIMULINK  &lt;br /&gt;
 Simulink_Control_Design  &lt;br /&gt;
 Stateflow  &lt;br /&gt;
 Stateflow_Coder  &lt;br /&gt;
 Statistics_Toolbox  &lt;br /&gt;
 Symbolic_Toolbox  &lt;br /&gt;
 Video_and_Image_Blockset  &lt;br /&gt;
 Virtual_Reality_Toolbox  &lt;br /&gt;
 Wavelet_Toolbox&lt;br /&gt;
&lt;br /&gt;
If you are having problems, feel free to contact [[HelpDesk | UMIACS Staff]], however please note that the Matlab license servers are hosted by campus&#039; Division of Information Technology.&lt;br /&gt;
&lt;br /&gt;
==Matlab Customizations==&lt;br /&gt;
&lt;br /&gt;
You can tweak your Matlab experience using a file &amp;quot;startup.m&amp;quot;. If this file is present in the current working directory where you launch Matlab, it will be executed. You can perform a variety of tasks using this file. These include (but are not limited to) customizing the window environment, setting variables for later use, and enabling use of 3rd party toolboxes. Alternatively, you can use the userpath env variable to set a path other than the current working directory for startup and 3rd party toolbox locations. Please see the following links for more information:&lt;br /&gt;
&lt;br /&gt;
* [http://www.mathworks.com/help/matlab/ref/matlabrc.html Mathworks: Startup.m]&lt;br /&gt;
* [http://www.mathworks.com/help/matlab/matlab_env/startup-folder-for-the-matlab-program.html#bs6j57e-5 Mathworks: Userpath function]&lt;/div&gt;</summary>
		<author><name>Amgast</name></author>
	</entry>
	<entry>
		<id>https://wiki.umiacs.umd.edu/umiacs/index.php?title=MacOSPrinting&amp;diff=5197</id>
		<title>MacOSPrinting</title>
		<link rel="alternate" type="text/html" href="https://wiki.umiacs.umd.edu/umiacs/index.php?title=MacOSPrinting&amp;diff=5197"/>
		<updated>2013-05-29T20:26:08Z</updated>

		<summary type="html">&lt;p&gt;Amgast: Removed references to Mac OS X 10.5&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;__NOTOC__&lt;br /&gt;
We support printing from user managed Mac OS X 10.6/10.7 machines.  Please note that you have to be on a UMIACS network directly or connected to the [[VPN]].&lt;br /&gt;
&lt;br /&gt;
[[Image:osx-print00.png|right|100px]]&lt;br /&gt;
=System Preferences=&lt;br /&gt;
To start you need to open your System Preferences from your Dock or the Applications folder.  Once you have opened it you will need to click &#039;&#039;&#039;Print &amp;amp; Fax&#039;&#039;&#039; from the Hardware panel ( Called &#039;&#039;&#039;Print &amp;amp; Scan&#039;&#039;&#039; in 10.7 (Lion) ).&lt;br /&gt;
&lt;br /&gt;
[[Image:osx-print01.png|right|100px]]&lt;br /&gt;
&lt;br /&gt;
=Print &amp;amp; Fax=&lt;br /&gt;
When the &#039;&#039;&#039;Print &amp;amp; Fax&#039;&#039;&#039; (or &#039;&#039;&#039;Print &amp;amp; Scan&#039;&#039;&#039;) window appears you will need to create a new local printer by clicking the &#039;&#039;&#039;+&#039;&#039;&#039; icon in the lower left corner of the first pane in the window.&lt;br /&gt;
&lt;br /&gt;
=Add Printer=&lt;br /&gt;
This will bring up a Add Printer dialog.  Please ensure that you have selected IP.&lt;br /&gt;
&lt;br /&gt;
* Set Protocol to &#039;&#039;&#039;Internet Printing Protocol - IPP&#039;&#039;&#039;&lt;br /&gt;
* Set Address to &#039;&#039;&#039;print.umiacs.umd.edu&#039;&#039;&#039;&lt;br /&gt;
* Set the queue to =printers/queue= in this example for cps3142 it would be &#039;&#039;&#039;printers/cps3142&#039;&#039;&#039;.  You have to make sure the queue is prefixed by &#039;&#039;&#039;printers/&#039;&#039;&#039;&lt;br /&gt;
* Set Name to the queue you are trying to use&lt;br /&gt;
* It will always select &#039;&#039;&#039;Generic Postscript Printer&#039;&#039;&#039;.  If you need to access the more advanced features of a queue/printer you will need take extra steps, please see the Advanced section at the bottom of this page.&lt;br /&gt;
* Select Add&lt;br /&gt;
* You will be asked about enabling duplex. If you know the printer has the option, which is true for most of our printers, go ahead and enable it. Then hit OK. If you&#039;re not sure, just leave it disabled. You can always enable it after the queue is added.&lt;br /&gt;
&lt;br /&gt;
[[Image:osx-print02.png]]&lt;br /&gt;
&lt;br /&gt;
You should now be able to print to this printer/queue from any Mac OS X print menu.&lt;br /&gt;
&lt;br /&gt;
=Advanced=&lt;br /&gt;
&lt;br /&gt;
You will need to first download a copy of the Postcript Printer Definition file from the print server.  This can be fetched with any normal browser by going to&lt;br /&gt;
 &lt;br /&gt;
  http://print.umiacs.umd.edu/printers/QUEUE.ppd&lt;br /&gt;
&lt;br /&gt;
Where &#039;&#039;&#039;queue&#039;&#039;&#039; is the queue/printer you want to get extra features from.  For example here are a few links to our major public printers.&lt;br /&gt;
&lt;br /&gt;
* http://print.umiacs.umd.edu/printers/cps3142.ppd - AV Williams Building room 3142&lt;br /&gt;
* http://print.umiacs.umd.edu/printers/ps3142.ppd - AV Williams Building room 3142&lt;br /&gt;
* http://print.umiacs.umd.edu/printers/cps4430a.ppd - AV Williams Building room 4430&lt;br /&gt;
* http://print.umiacs.umd.edu/printers/cps296-3120Hb.ppd - Biomolecular Sciences Building room 3120H&lt;br /&gt;
&lt;br /&gt;
Please save this file to your hard disk as you will need to use the file chooser to select it in the next step.  If you don&#039;t see the queue you want please just reconstruct the URL above and substitute in your queue name.&lt;br /&gt;
&lt;br /&gt;
Next go back to the &#039;&#039;&#039;Print &amp;amp; Fax&#039;&#039;&#039; (or &#039;&#039;&#039;Print &amp;amp; Scan&#039;&#039;&#039;) dialog and click the &#039;&#039;&#039;Options &amp;amp; Supplies...&#039;&#039;&#039; button for the queue you want to modify.&lt;br /&gt;
&lt;br /&gt;
[[Image:osx-print03.png]]&lt;br /&gt;
&lt;br /&gt;
You will need to navigate to the Driver tab and select the option &#039;&#039;&#039;Other...&#039;&#039;&#039; from the Print Using option.  This will bring up a file chooser from which you will need to select the file you downloaded.&lt;br /&gt;
&lt;br /&gt;
[[Image:osx-printingadv00.png]]&lt;br /&gt;
&lt;br /&gt;
This will fill in all the default options and you can then click Okay.  If you have questions or need help please contact [mailto:staff@umiacs.umd.edu staff@umiacs.umd.edu].&lt;/div&gt;</summary>
		<author><name>Amgast</name></author>
	</entry>
</feed>