[gentoo-user] Explenation about %-lines in fcrontab files
Hello, I am not new in fcron but I have never used all its functionalities. In fact, I only use -lines in crontab which are like in Cron. However, today, I need to use Fcron for executions like once all Friday between 10:00 and 13:00. So I read Fcrontab(5) again. And I thought %-lines are what I needed. But, I didn't succeed in understanding how *ly, mid*ly and *s keywords work. Maybe could you help me. Where could I find more examples on those %-lines ? What I have understood ? For instance for an execution all Friday between 10:00 and 13:00, I would write: %hours * 10-12 * * Fri /what/I/want/to/do Is it right ? For *ly and mid*ly, I don't understand the difference between mid and not mid. What are the differences between: %daily * 10-12 /what/I/want/to/do # an execution all days between 10:00 and 13:00 ? And: %nightly * 10-12 /what/I/want/to/do # an execution all nights between 10:00 and 13:00 ? So all days between 10:00 and 13:00 ... Or between: %hourly 15-30 /what/I/want/to/do # an execution all hours between -:15 and -:30 ? And: %midhourly 15-30 /what/I/want/to/do # the same ? And what are the differences between weekly and midweekly, excepted Fcron starts to try the execution Monday or Thursday ? ... So can you explain me how work %-lines, or tell me where I could find a documentation more explicit than Fcrontab(5) ;-) . Regards, Grégoire Baron -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] Explenation about %-lines in fcrontab files
On 10/15/06, Grégoire Baron [EMAIL PROTECTED] wrote: Hello, I am not new in fcron but I have never used all its functionalities. In fact, I only use -lines in crontab which are like in Cron. However, today, I need to use Fcron for executions like once all Friday between 10:00 and 13:00. So I read Fcrontab(5) again. And I thought %-lines are what I needed. But, I didn't succeed in understanding how *ly, mid*ly and *s keywords work. Maybe could you help me. Where could I find more examples on those %-lines ? What I have understood ? For instance for an execution all Friday between 10:00 and 13:00, I would write: %hours * 10-12 * * Fri /what/I/want/to/do Is it right ? Yes, I think so. And what are the differences between weekly and midweekly, excepted Fcron starts to try the execution Monday or Thursday ? ... Fcron starts the command if is has not been executed in the period. It's the same, except weekly means mon-sun (or is it sun-mon?) midweekly means thu-wed Imagine you've just configured fcron on monday à 9:00 with %weekly * 0-10 command1 %midweekly * 0-10 command2 Both commands are executed immediately. Tuesday, nothing happens. Wednesday, nothing happens Thursday, command2 is executed, but not command1. Friday, nothing happens Sat, nothing happens Sun, nothing happens Mon, command1 is exectued. You can then understand all over mid* commands. For *ly and mid*ly, I don't understand the difference between mid and not mid. What are the differences between: %daily * 10-12 /what/I/want/to/do # an execution all days between 10:00 and 13:00 ? And: %nightly * 10-12 /what/I/want/to/do # an execution all nights between 10:00 and 13:00 ? So all days between 10:00 and 13:00 ... By definition nightly=middaily. But of course, if you indicate an hour which occurs only once in each period, that won't change anything. There will be a difference for %daily * 10-12,17-18 /what/I/want/to/do %nightly * 10-12,17-18 /what/I/want/to/do In practice, there will be a difference if you turn off the computer for lunch time. Or between: %hourly 15-30 /what/I/want/to/do # an execution all hours between -:15 and -:30 ? And: %midhourly 15-30 /what/I/want/to/do # the same ? idem, fcron needs a larger minute frame to have choices So can you explain me how work %-lines, or tell me where I could find a documentation more explicit than Fcrontab(5) ;-) . I did'nt use more, either :-p http://fcron.free.fr/doc/fr/fcrontab.5.html Hope this helps, -- Régis http://regis.decamps.info/blog/ -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] Explenation about %-lines in fcrontab files
Ok, thanks I think, for *s keywords I understood. For *ly and mid*ly, I think I have some difficulties because I haven't concrete examples. In fact, the difference between *ly and mid*ly keywords (between weekly and midweekly, for instance) is the beginning of the period and so when fcron start to try to execute the command. And in practice, we only can see that when we have several execution intervals for a same period, computer shutdown or 2 commands with mid and without mid (one with middaily and one with daily, for instance), aren't we ? Thanks you very much for your help. Sincerely, Grégoire Baron Régis Décamps a écrit : On 10/15/06, Grégoire Baron [EMAIL PROTECTED] wrote: Hello, I am not new in fcron but I have never used all its functionalities. In fact, I only use -lines in crontab which are like in Cron. However, today, I need to use Fcron for executions like once all Friday between 10:00 and 13:00. So I read Fcrontab(5) again. And I thought %-lines are what I needed. But, I didn't succeed in understanding how *ly, mid*ly and *s keywords work. Maybe could you help me. Where could I find more examples on those %-lines ? What I have understood ? For instance for an execution all Friday between 10:00 and 13:00, I would write: %hours * 10-12 * * Fri /what/I/want/to/do Is it right ? Yes, I think so. And what are the differences between weekly and midweekly, excepted Fcron starts to try the execution Monday or Thursday ? ... Fcron starts the command if is has not been executed in the period. It's the same, except weekly means mon-sun (or is it sun-mon?) midweekly means thu-wed Imagine you've just configured fcron on monday à 9:00 with %weekly * 0-10 command1 %midweekly * 0-10 command2 Both commands are executed immediately. Tuesday, nothing happens. Wednesday, nothing happens Thursday, command2 is executed, but not command1. Friday, nothing happens Sat, nothing happens Sun, nothing happens Mon, command1 is exectued. You can then understand all over mid* commands. For *ly and mid*ly, I don't understand the difference between mid and not mid. What are the differences between: %daily * 10-12 /what/I/want/to/do # an execution all days between 10:00 and 13:00 ? And: %nightly * 10-12 /what/I/want/to/do # an execution all nights between 10:00 and 13:00 ? So all days between 10:00 and 13:00 ... By definition nightly=middaily. But of course, if you indicate an hour which occurs only once in each period, that won't change anything. There will be a difference for %daily * 10-12,17-18 /what/I/want/to/do %nightly * 10-12,17-18 /what/I/want/to/do In practice, there will be a difference if you turn off the computer for lunch time. Or between: %hourly 15-30 /what/I/want/to/do # an execution all hours between -:15 and -:30 ? And: %midhourly 15-30 /what/I/want/to/do # the same ? idem, fcron needs a larger minute frame to have choices So can you explain me how work %-lines, or tell me where I could find a documentation more explicit than Fcrontab(5) ;-) . I did'nt use more, either :-p http://fcron.free.fr/doc/fr/fcrontab.5.html Hope this helps, -- gentoo-user@gentoo.org mailing list
