For the noobs like me who were not exactly sure how to use this tidbit, you can get a better description from "man 5 crontab".  For example, you can use "@yearly" in place of the first 5 fields (0 0 1 1 *) in a crontab entry to make a more humanly readable entry.
<br><br><div><span class="gmail_quote">On 5/11/07, <b class="gmail_sendername">Shawn Badger</b> &lt;<a href="mailto:badger.shawn@gmail.com">badger.shawn@gmail.com</a>&gt; wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Here are some useful crontab tricks that I found a while back on the<br>web and then someone posted them again. So I though I should pass them<br>on to the group.<br><br><br>Entry&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Description&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Equivalent To
<br>@reboot&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Run once, at startup.&nbsp;&nbsp; None<br>@yearly&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Run once a year&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0 0 1 1 *<br>@annually&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (same as @yearly)&nbsp;&nbsp;&nbsp;&nbsp;0 0 1 1 *<br>@monthly&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Run once a month&nbsp;&nbsp;&nbsp;&nbsp; 0 0 1 * *<br>@weekly&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Run once a week&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0 0 * * 0
<br>@daily&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Run once a day&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0 0 * * *<br>@midnight&nbsp;&nbsp;&nbsp;&nbsp; (same as @daily)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0 0 * * *<br>@hourly&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Run once an hour&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0 * * * *<br><br><br>I found them again at this site:<br><br><a href="http://blog.lxpages.com/2007/05/10/neat-crontab-tricks/">
http://blog.lxpages.com/2007/05/10/neat-crontab-tricks/</a><br>---------------------------------------------------<br>PLUG-discuss mailing list - <a href="mailto:PLUG-discuss@lists.plug.phoenix.az.us">PLUG-discuss@lists.plug.phoenix.az.us
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</div><br><br clear="all"><br>-- <br>Be who you are and say what you feel, because those who mind don&#39;t matter and those who matter don&#39;t mind.&nbsp;&nbsp;- Dr. Seuss