hello again mike,
On 12/12/2013 10:35 PM, g wrote: <>
i do not know what op's
0,1
would do as i have never seen <,> used in any cron commands.
now i do. and when i found it, it did come back to me, in spite of my 'chemo brain'. ;=)
while watching reruns of 'space 1999', during a commercial, the use of <,> key hit me and i did recall it from a very long time ago, so i decided to run a search.
which was;
https://ixquick.com/do/search?q=%22cron%22+tutorial&lui=english About 307,925 results
i found;
=+=+=+= http://www.tldp.org/LDP/GNU-Linux-Tools-Summary/html/scheduling.html
=+=+=+= http://www.scrounge.org/linux/cron.html
0,15,30,45 * * * * /usr/bin/foo
Will run /usr/bin/foo every 15 minutes on every hour, day-of-month, month, and day-of-week. In other words, it will run every 15 minutes for as long as the machine it running.
=+=+=+= http://clickmojo.com/code/cron-tutorial.html
How do I run a task every 5 minutes?
One option is to use
MAILTO=cron@username.plus.com 0,5,10,15,20,25,30,35,40,45,50,55 * * * * /command/to/execute
However, there is a special shortcut for this: MAILTO=cron@username.plus.com */5 * * * * /command/to/execute
The */5 is known as a short form equivalent to 0,5,10,15,20 etc... and achieves the same effect as the previous example, executing the command every 5 minutes. Other examples are: */2 would be every 2 mins, */30 every 30 minutes and so on. You can use the same short form for the hour indicator */2 every 2 hours, */6 every 6 hours etc.
=+=+=+= http://www.unixsurgeon.com/kb/cron-job-tutorial.html
If you want the cron job to run at 1:00 and 2:00 A.M:
* 1,2 * * * /home/username/public_html/mail.sh
This runs your cron at 1A.M and 2A.M every day, every month and every week.
=+=+=+=
i hope that helps you more with your cron.
later.