Re: Run a command on "last day of month"

Joel Carnat <joel@carnat.net> wrote:

> Hello,
>
> I would like to run a command on "the last day of each month".
>
> From what I understood reading the crontab(5) manpage, the simplest
> way would be setting day-of-month to "28-31". But this would mean
> running the command 4 times for months that have 31 days.
>
> Is there a simpler/better way to configure crontab(1) to run a command
> on "the last day of month" only ?

cron has no way to do this

adding a non-portable extension doesn't really make sense

the easiest way is to have your script run then (or every day), and
make a more detailed check inside the script. this pattern is very
common...