topic Re: cron scheduling in Operating System - HP-UX

cron scheduling

Noelle Stimely_1 — Wed, 07 Nov 2001 19:19:36 GMT

Hello..

I was wondering how to schedule a cron job to take place on an hourly basis? I greatly appreciate your help!!

Thank you...

Re: cron scheduling

Eileen Millen — Wed, 07 Nov 2001 19:25:34 GMT

00 * * * * command

put this in a file
crontab filename
to set it up under cron
crontab -l
lists cronjobs
man crontab will list the fields

Eileen

Re: cron scheduling

Craig Rants — Wed, 07 Nov 2001 19:26:17 GMT

Enter crontab -e to properly vi the crontab file. Then...

00 0-23 * * * command string

That should take care of hourly scheduling

Good Luck
C

Re: cron scheduling

Sanjay_6 — Wed, 07 Nov 2001 19:26:50 GMT

Hi Noelle,

To run a job hourly try this command in your crontab file. If you don't have a crontab file, create one using crontab -e. To check your current crontab file do, crontab -l. Edit this file and put and entry in it as shown below to run the job each hour, every day, throughout the year. Do a man crontab for more info and to create your custom cron job.

00 x x x x /path_to_the_job

Hope this helps.

Regds

Re: cron scheduling

Uday_S_Ankolekar — Wed, 07 Nov 2001 19:28:15 GMT

Hi,

00 * * * * would work. See man pages of crontab for more detailed examples.

-USA.

Re: cron scheduling

Joseph C. Denman — Wed, 07 Nov 2001 19:28:43 GMT

crontab -e #edit the crontab file
G #go to bottom of file
o #add line blow
00 * * * * /your/script/to/run/on/hour #your entry
:wq!

Will run the script on the hour.

Hope this helps.

...jcd...

Re: cron scheduling

Kevin Wright — Wed, 07 Nov 2001 19:29:34 GMT

crontab file is like this
Minute Hour dayOfMonth Month Dayofweek

so to run a job every hour on the hour..
0 * * * * /jobs/to/run

Re: cron scheduling

James R. Ferguson — Wed, 07 Nov 2001 20:19:48 GMT

Hi Noelle:

In addition to the information you already have, note this from the 'crontab' man page:

"You can execute crontab if your name appears in the file /var/adm/cron/cron.allow. If that file does not exist, you can use crontab if your name does not appear in the file /var/adm/cron/cron.deny. If only cron.deny exists and is empty, all users can use crontab. If neither file exists, only the root user can use crontab."

Similar security also exists for 'at' commands using the /var/adm/cron/at.allow and /var/adm/cron.at.deny files.

Regards!

...JRF...

Re: cron scheduling

Michael Tully — Thu, 08 Nov 2001 03:36:45 GMT

Hi,

When editing the crontab make a habit of *not*
using the -e switch. Make a copy to a temporary
file and then submit it.

# crontab -l >/tmp/wrk
# vi /tmp/wrk
Make your changes (for example)

0 * * * * /usr/local/bin/my_job.sh

Save the file
# Submit it to cron
# crontab /tmp/wrk

HTH
-Michael