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Sybase - How to edit cron schedule for sybase backups

Posted on 2013-12-12
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Last Modified: 2014-01-14
I have a following cron schedule for sybase log backups. My questions iw how do I edit this cron job so that the cron schedule will run every  6 hrs daily


10,40 * * * * /opt/sybase/home/edt_local/bin/backup_sybase Instance_1_S -trans
15,45 * * * * /opt/sybase/home/edt_local/bin/backup_sybase Instance_2_S -trans
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Question by:motioneye
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3 Comments
 
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Assisted Solution

by:farzanj
farzanj earned 2000 total points
ID: 39715748
So the first entry is for minutes and the second entry is for hour.

You may need minutes to be 0 and hours to be */6

So your first entry would be like

0 */6 * * * /opt/sybase/home/edt_local/bin/backup_sybase Instance_1_S -trans

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Author Comment

by:motioneye
ID: 39715874
Hi,
Do you have the step how to edit the cronjob above ?
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LVL 31

Accepted Solution

by:
farzanj earned 2000 total points
ID: 39716026
First you have to have permission to use crontab or you have to be a root user.

So you need to figure out the user who would run the crontab.

Become that user using

su -  username

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or

su -

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for becoming a root user.


Then you issue command

visudo

Open in new window


This should open the crontab in vi editor.  You also will be able to see all the cron entries this user has.

Press i for insert mode.

Type your entry.

Esc for command mode.

:x
To save changes and exit.

crontab -l would list all the cron entries the user has.

Done
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