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I was learning and experimenting with crontab today.

The default editor was just too difficult for me to figure out which caused me to remove my crontab by running crontab -r.

Now, when I run crontab -e and input my new cron task, nothing happens. I suspect it's the crontab -r command I executed earlier.

Can anyone help, please?

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Next time please provide the cron job you try to run so that we can understand the problem better. –  tiktak Mar 28 '12 at 15:31
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2 Answers

up vote 1 down vote accepted

When you did crontab -e, nothing happens and it returned you normal prompt ?

if it gives you an empty space you should enter your variables like :

0 0 * * * /opt//newauditlog.ksh > /dev/null 2>&1

After you did that you can exit with :wq!

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Thank you! That works –  sisko Mar 28 '12 at 13:22
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This sounds like a RTFM question to me ;-)

man crontab

The -e option is used to edit the current crontab using the editor specified by the VISUAL or EDITOR environment variables. After you exit from the editor, the modified crontab will be installed automatically. If neither of the environment variables is defined, then the default editor /usr/bin/editor is used.

So the -e option should "automatically install the modified crontab"

Make sure there is a file matching your username and your jobs in /var/spool/cron/crontabs and check the content of /etc/cron.allow and /etc/cron.deny

Also, look that the cron daemon is running: ps aux | grep cron

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non of those files (cron.allow nor cron.deny) nor any matching username file exits in /var/spool/cron/crontabs –  sisko Mar 28 '12 at 12:31
    
Then this means the "crontab" utility is not doing its job. See my update –  tiktak Mar 28 '12 at 15:28
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