cron job

Shell Programming and Scripting
1

how do you schedule a job to run at the last day of the in a single crontab line

for example if I put a crontab entry of

0 0 31 * * /path_of_my_script

the above will only run if the last day of the months is 31, what happens if the last day of the month is 28 or 30.

if I put a crontab entry of

0 0 28,30,31 * * /path_of_my_script

this will run on all three days 28, 30, and 31

But I only want my script to run on the last day of the month
Is they a way to have a cron job run at the last day of the month regardless if the last day of the month is 28, 30, or 31?

Thanks in Advance

2

You have to add some logic to your script to see what the day and month is....and then you would have to figure out if it's a leap year (Feb 29)!

There are some tips on the Net ( like this one ).

3

if you know the month just schedule it... IF this is to run every month, you will need a script that has logic in it...

I will post here a script I found that works.

4

A user here came up a simple solution. She puts in 12 entries, one for each month of the year. I pointed out that the February entry will be wrong in leap years. She just shrugged and said she reviews her cron jobs in late December anyway.

5

Thanks everyone.

RTM tips works