Ben, Than you so much, this really is what i needed. If i have put it together with some scripts i will put it on the wiki. This way we can wake-up our FR when a cron job is due.
Again thanks a lot. Kind regards, Ed Ben Wong wrote: > Sure, I've whipped up an example for you based on the documentation > located here: http://search.cpan.org/dist/Schedule-Cron/lib/Schedule/Cron.pm > > --Ben > > #!/usr/bin/perl -w > use Schedule::Cron; > > # Dummy subroutine, to make Cron constructor happy. > sub dispatcher { > print "ID: ",shift,"\n"; > print "Args: ","@_","\n"; > } > > my $cron = new Schedule::Cron(\&dispatcher); > > # You can print out a date from a single line... > $line='*/5 3 * * 5,6'; > print "The crontab entry '$line' will be next executed on "; > print scalar(localtime($cron->get_next_execution_time($line))); > print "\n\n"; > > # ...or you can iterate through a crontab file. > $cron->load_crontab("/etc/crontab"); > > my @entries = $cron->list_entries(); > foreach $e (@entries) { > # time in original cron format, "*/5 * * * *" > print $$e{'time'} . "\t"; > > my $nexttime=$cron->get_next_execution_time($$e{'time'}); > > # time in seconds since the epoch > print $nexttime . "\t"; > > # time in human readable format > print scalar(localtime($nexttime)) . "\t"; > > # the rest of the line from the crontab file > @command = $$e{'args'}; > print $command[0][0]; > print "\n"; > } > > # END OF SCRIPT > > > > On Sat, May 30, 2009 at 6:29 PM, Ed Kapitein <e...@kapitein.org> wrote: > >> Ben Wong wrote: >> >>> Did you try $cron->get_next_execution_time($cron_entry,[$ref_time]) ? >>> >>> --Ben >>> >>> >> No, i had no idea i could ! >> But now that i try it i get: >> Can't call method "get_next_execution_time" on an undefined value at >> ./ff.pl line 11. >> >> Can you make an example perl script? a real simple one? >> >> Thanks ! >> >> Kind regards, >> >> Ed >> >> >> >>> On Sat, May 30, 2009 at 4:21 PM, Ed Kapitein <e...@kapitein.org> wrote: >>> >>> >>>> Alexey Feldgendler wrote: >>>> >>>> >>>>> On Fri, 29 May 2009 15:49:27 +0200, Ed Kapitein <e...@kapitein.org> wrote: >>>>> >>>>> >>>>> >>>>> >>>>> >>>>>> i need a script/program that will read a crontab line >>>>>> ( * * * * * some_action) and output the date and time the job will run. >>>>>> >>>>>> Does anyone know of such a tool? >>>>>> This way i can un-suspend the FR a few seconds prior to the start of >>>>>> that cron job. >>>>>> >>>>>> I already made a script that sort of works, but it is limmited at best >>>>>> and i hate to reinvent the wheel again. >>>>>> >>>>>> >>>>>> >>>>> You might want to look at this: >>>>> http://search.cpan.org/dist/Schedule-Cron >>>>> >>>>> >>>>> >>>> Hi Alexey and all the others >>>> >>>> I did take a look at perl, but i am a real perl noob. >>>> >>>> This is what i have so far: >>>> >>>> #!/usr/bin/perl >>>> use Config::Crontab >>>> $event = new Config::Crontab::Event( -data => '*/5 3 * * 5,6 /bin/blech' ); >>>> print $event->minute . "\n"; >>>> print $event->hour . "\n"; >>>> print $event->dom . "\n"; >>>> print $event->datetime . "\n"; >>>> print $event->command . "\n"; >>>> print $event->dump . "\n"; >>>> >>>> And if i run that i get: >>>> >>>> */5 >>>> 3 >>>> * >>>> */5 3 * * 5,6 >>>> /bin/blech >>>> */5 3 * * 5,6 /bin/blech >>>> >>>> Perhaps i am missing the obvious here. >>>> >>>> Is there someone out there who can make a script that can read a >>>> crontab line and give the time and date of the next time it will be >>>> executed ? >>>> output in the form: >>>> secs_since_epoch,yyyy-mm-dd,hh:mm,command would be *great* >>>> >>>> Many thanks in advance, >>>> >>>> Ed >>>> >>>> >>>> >>>> _______________________________________________ >>>> Openmoko community mailing list >>>> community@lists.openmoko.org >>>> http://lists.openmoko.org/mailman/listinfo/community >>>> >>>> >>>> >>> _______________________________________________ >>> Openmoko community mailing list >>> community@lists.openmoko.org >>> http://lists.openmoko.org/mailman/listinfo/community >>> >>> >> _______________________________________________ >> Openmoko community mailing list >> community@lists.openmoko.org >> http://lists.openmoko.org/mailman/listinfo/community >> >> > > _______________________________________________ > Openmoko community mailing list > community@lists.openmoko.org > http://lists.openmoko.org/mailman/listinfo/community > _______________________________________________ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community