will this cron entry do what I want it to?

microsoft/linux · 01-12-2006, 05:58 PM

Ok, so my script is called 'fixresolv.conf' and is located in my home directory. I want it to run every 20 minutes, every day(when my computer is on, obviously it won't run if it's off

).
I added the following to the /etc/crontab file

Code:

20 *    * * *  jake     /home/jake/fixresolv.conf

Will this do what I want it to?

pljvaldez · 01-12-2006, 06:06 PM

I think "20" would only run the script at 20 past the hour. You probably want "0,20,40".

haertig · 01-12-2006, 06:09 PM

No, that will run it at 20 after every hour. i.e., 1:20, 2:20, 3:20, etc.

Run "man -S 5 crontab" to see how to set it up.

pljvaldez · 01-12-2006, 06:18 PM

Interesting, I learned something new from that manpage.

Also, I never did understand when at the bottom of a man page it said "also see cron(8), crontab(1)". I always thought, "hmmm. I just did man crontab, why do they want me to look at it again?" Thanks, haertig. I guess I should get a

for that one.

Anyway, it looks like you could use */20 or 0,20,40...

microsoft/linux · 01-12-2006, 06:29 PM

Ok, I guess I missed that part. Yeah, after looking at it again, you guys are right. Thanks.