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===Moving around in the file system===
<td>less</td>
<td>View text files and paginate them if needed.</td>
</tr>
<tr>
<td>[[Linux-find|find]]</td>
<td>find files or directories.</td>
</tr>
</table>
===Manipulating files and directories===
<td>rmdir</td>
<td>Remove an empty directory.</td>
</tr>
<tr>
<td>nano</td>
<td>Interactively edit a text file (sort of the command line equivalent to notepad.exe or TextEdit)</td>
</tr>
</table>
===Files and directory /Directory Permissions===<table border="1"><tr><th>Command</th><th>Action</th></tr><tr><td>chown</td><td>Change ownership</td></tr><tr><td>chgrp</td><td>Change group</td></tr><tr><td>chmod</td><td>Change permissions</td></tr></table> '''NOTE:''' [http://www.webune.com/an-example-code-script-of-javascript-linux-permission-chart-table-chmod-s81.html Linux Permission Chart Table] calculates based on user input. Another good link on the basics of [http://www.ahinc.com/linux101/permission.htm linux permissions]. === CRON Tester ===[http://cron.schlitt.info/ CRON Tester] and [http://www.cronchecker.net cron checker] will show you what your CRON definition equates too in time and frequency.
For example, <code>0 2 * * *</code> equates to ''2AM daily'Command Action'''chown Change ownershipchgrp Change groupchmod Change permissions.
