UNIX for Advanced & Expert Users

Hi,

How can i schedule a job, i.e a program named p found at path a/b/c, to run at a time T everyday?

Thanks

Welcome to the forum.

Use the search facility provided.

cron and crontab
Need tut on Cron info

vino

Was looking at the job scheduling query and recalled a requirement that I had. It seems in the cron format you cant specify time incrementally i.e. if i want to run sthing every 2 minutes, the only option i have is to enter a command like this:
00,02,04,06,08,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,40,42,44,46,48,50,52,54,56,58 * * * * $HOME/file.sh


Is there a better way?

*some* versions of cron allow a syntax such as

*/2 in the minute field to denote "every two minutes"

Check out the man page for the crontab file (man 5 crontab on Linux).

Cheers
ZB

hai ,

go to /etc
open crontab

specify
* * * * * roots /a/b/c/program name
the stars will be
1. minutes
2.hours.
3.day of the week
4.day of the month
5.month of the year

according what u specfied u can run the job

Hmm... lots of incorrect and/or misleading information here.

Firstly, this is the system crontab (under Linux) - as can be seen by the additional field between the scheduling fields, and the command field. This field contains the username of the user as which the command is to run. Now, in this case, I assume the user "roots" is a standard user? If you're refering to the superuser, then the correct username is "root". Also, the ordering of the fields as you've described is way off.

1. minutes
2. hours
3. day of month
4. month
5. day of week

Is the correct ordering of the scheduling fields. Before posting a reply, check that it's correct. If you have any doubts, check the crontab manual page....

Cheers
ZB