cron last day of every month

lobo78 · 03-03-2004, 11:14 AM

How would you go about writing a crontab entry for a job that would run at 11:59pm on the last day of every month? It can't be static since the days in a month varies from 28 to 31.

Also, how can you deal with leap years?

wapcaplet · 03-03-2004, 11:42 AM

The crontab (5) manual page has some details on specifying hours, minutes, and days of the month (type 'man 5 crontab' to see it).

I also found this and this after some searching.

It'd probably be a lot easier to just run it on the 1st of the month at midnight

homey · 03-03-2004, 08:41 PM

Digging around on the web, this is as far as I get. I'm not entirely sure if this will handle the leap year. Would appreciate if you find out to let me know.

Code:

#All months with 31 days
59 23 31 1-7/2,8-12/2 * /mnt/backup/backup.job
# All months with 30 days
59 23 30 4,6,9,11 * /mnt/backup/backup.job
#February on a normal year
59 23 28 2 * /mnt/backup/backup.job
#February on a leap year (maybe)
59 23 29 2 5 /mnt/backup/backup.job