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I need to find all the scripts on server which run automatically. The server crashed 2 times yesterday and I need to move all the cron scripts to move to backup server. Please tell me how to identify these scripts ?

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Try reading /usr/etc/crontab. – Alix Axel Jan 19 '11 at 17:26
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Sys admin -> serverfault. – derobert Jan 19 '11 at 17:30
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4 Answers

up vote 6 down vote

I'm assuming since you mentioned cron that you're on a Linux platform, in which case you can do this,

for user in $(cut -f1 -d: /etc/passwd); do sudo crontab -u $user -l; done

This will show the cron jobs for every user on the system, so it will show you which scripts run automatically.

There will probably be some system level ones too, in which case you do this to see them,

ls /etc/cron*
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+1 for mentioning /etc/cron* insteadd of just /etc/crontab. – Michael Mior Jan 19 '11 at 17:29
@Michael Mior: At least here, /etc/crontab actually runs /etc/cron.FOO. – derobert Jan 19 '11 at 17:31
Same here, except for the case when you need a weird schedule. Like, only run on Fridays in November. – Michael Mior Jan 19 '11 at 17:35
How can I find all teh cron jobs for all the users?? and where are these jobs stored? – vincy Jan 19 '11 at 18:36
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That's what the first part of my answer does, the "for user in..." command shows you all the cron jobs for all the users. They're stored in /var/spool/cron/crontabs/ usually. – Rich Adams Jan 19 '11 at 18:57
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up vote 3 down vote

crontab -l

and check /etc/crontab

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You should also check /etc/cron.d and /etc/cron.{daily,hourly,weekly} if they exist. Also, /etc/anacrontab. – Michael Mior Jan 19 '11 at 17:28
Thank you...it worked.. – vincy Jan 19 '11 at 18:06
How can I find all teh cron jobs for all the users?? and where are these jobs stored? – vincy Jan 19 '11 at 18:11
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up vote 2 down vote 
crontab -l

will list all the scheduled scripts.

Hope it helps.

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This will only list cron jobs for the currently logged in user. – Michael Mior Jan 19 '11 at 17:34
How can I find all the cron jobs for all the users?? and where are these jobs stored? – vincy Jan 19 '11 at 18:07
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up vote 1 down vote

Take a peek into /var/spool/cron.

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