Is it possible for me to schedule cron to say run script A on the first Friday of the month, script B on the second Friday of the month, script C, etc.? Thanks. Scott
Scott Ehrlich wrote:> Is it possible for me to schedule cron to say run script A on the first > Friday of the month, script B on the second Friday of the month, script > C, etc.?Yes. You just need to specify the "day of the week" and a "day of the month" with a range that can only happen for the first occurrence of the particular day in question: 00 12 1-7 * Fri command-for-first-friday-of-month 00 12 8-14 * Fri command-for-second-friday-of-month Remember, cron must match *ALL* date/time specifiers. I have not tested this, so it may not work as advertised. Cheers, Michael
On Jan 28, 2008 1:26 PM, Scott Ehrlich <scott at mit.edu> wrote:> Is it possible for me to schedule cron to say run script A on the first > Friday of the month, script B on the second Friday of the month, script C, > etc.?There is always the lowly 'at' command. Setup and maintenance would be a pain as you would not easily be able to create a configuration that would run in perpetuity. But perhaps you could write a script to generate each months 'at' schedule and run that with cron. If you control the scripts that are being run, perhaps you could run them on a regular schedule and program them with the logic needed to decide whether or not they should do anything. -- Jeff
On Jan 28, 2008 2:26 PM, Scott Ehrlich <scott at mit.edu> wrote:> Is it possible for me to schedule cron to say run script A on the first > Friday of the month, script B on the second Friday of the month, script C, > etc.? >I think you can make cronjob run on every Friday, and in your script check if date is 2nd (3rd) Friday. OTOH, if you specify days and day of week, I think they will both match, which is not what you want. I found this with google: <http://www.computing.net/unix/wwwboard/forum/2731.html> Which leads to something along these lines ... day=`date +%d` if [ $day -ge 8 -o $day -le 14 ]; then echo <javascript:void(0)> '2nd Friday' # do F2 elif [ $day -ge 15 -o $day -le 21 ]; then echo <javascript:void(0)> '3rd Friday' # do F3 fi HTH, -Bob -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20080128/7348f56a/attachment-0002.html>