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I have a production server running a scheduled task that I simply can't track down.

It seems that it is running dbdump.bash on a daily basis, but none of the cron files have a reference to that or anything running a back up!

I've tried to grep -r "dbdump.bash" / to search for the offending job, but no luck so far. The backups are large, and if not manually removed will completely fill up the hard drive.

How can I track this down? Thanks!


Here's the contents of /etc/crontab:

# /etc/crontab: system-wide crontab
# Unlike any other crontab you don't have to run the `crontab'
# command to install the new version when you edit this file
# and files in /etc/cron.d. These files also have username fields,
# that none of the other crontabs do.


# m h dom mon dow user  command
17 *    * * *   root    cd / && run-parts --report /etc/cron.hourly
25 6    * * *   root    test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.daily )
47 6    * * 7   root    test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.weekly )
52 6    1 * *   root    test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.monthly )

Update: Contents of /var/spool/cron/crontabs/tweaver

# DO NOT EDIT THIS FILE - edit the master and reinstall.
# (/tmp/crontab.cb6x6l/crontab installed on Tue Dec 21 20:08:50 2010)
# (Cron version -- $Id: crontab.c,v 2.13 1994/01/17 03:20:37 vixie Exp $)
# m h  dom mon dow   command
5 2 * * * /home/tweaver/dbrefresh/dbdump.bash
share|improve this question
I don't see any relevant references in either - which files are important in /etc/init.d/? – jocull Jul 8 '13 at 19:21
Issue crontab -l to see the list of jobs for current user and sudo crontab -l -u user to see jobs of other users. – J. Bruni Jul 8 '13 at 19:22
Look into the /etc/cron.*/ directories. – Martin Ueding Jul 8 '13 at 19:22
Yes, look also /etc/crontab file and /etc/cron.* directories – J. Bruni Jul 8 '13 at 19:23
Look also in /var/spool/cron/crontabs. Maybe this script is launched by a user crontab file. – Eric Carvalho Jul 8 '13 at 19:36
up vote 3 down vote accepted

When a user run crontab -e to create a personal cron job a file /var/spool/cron/crontabs/<username> is created.

Just remove the file with the same name of user who created that cron job and you're done:

sudo rm /var/spool/cron/crontabs/tweaver
share|improve this answer
Thank you! I appreciate the help. – jocull Jul 8 '13 at 20:22

crontab -e

will edit that master file, don't edit /var/spool/cron/crontabs/tweaver manually, just do the above.

share|improve this answer
In this case, tweaver is not my user, and I don't have his password. It's an old student project that some students have long since left behind, so it's now my job to clean up the leftovers! – jocull Apr 9 '14 at 13:25

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