GNU/Linux global system cron jobs
As well as cron jobs for each user there may also be global "system" cron jobs that run hourly, daily, weekly or monthly on your GNU/Linux system
# cat /etc/crontab SHELL=/bin/bash PATH=/sbin:/bin:/usr/sbin:/usr/bin MAILTO=root HOME=/ # run-parts 01 * * * * root run-parts /etc/cron.hourly 02 4 * * * root run-parts /etc/cron.daily 22 4 * * 0 root run-parts /etc/cron.weekly 42 4 1 * * root run-parts /etc/cron.monthly
So to get a complete list of scheduled tasks (including prelink and makewhatis) try
# ls -lR /etc/cron* -rw-r--r-- 1 root root 0 Oct 27 19:08 /etc/cron.deny -rw-r--r-- 1 root root 255 Feb 21 2005 /etc/crontab /etc/cron.d: total 4 -rw------- 1 root root 366 Jun 14 21:19 sa-update /etc/cron.daily: total 84 lrwxrwxrwx 1 root root 28 Oct 27 19:07 00-logwatch -> ../log.d/scripts/logwatch.pl -rwxr-xr-x 1 root root 418 Sep 14 2006 00-makewhatis.cron -rwxr-xr-x 1 root root 135 Feb 21 2005 00webalizer -rwxr-xr-x 1 root root 276 Feb 21 2005 0anacron -rw-r--r-- 1 root root 797 Feb 21 2005 certwatch -rwxr-xr-x 1 root root 180 Oct 20 2006 logrotate -rwxr-xr-x 1 root root 2133 Dec 1 2004 prelink -rwxr-xr-x 1 root root 104 May 4 12:55 rpm -rwxr-xr-x 1 root root 121 Aug 22 2005 slocate.cron -rwxr-xr-x 1 root root 286 Feb 21 2005 tmpwatch -rwxr-xr-x 1 root root 158 May 5 14:08 yum.cron /etc/cron.hourly: total 0 /etc/cron.monthly: total 8 -rwxr-xr-x 1 root root 278 Feb 21 2005 0anacron /etc/cron.weekly: total 24 -rwxr-xr-x 1 root root 414 Sep 14 2006 00-makewhatis.cron -rwxr-xr-x 1 root root 277 Feb 21 2005 0anacron -rwxr-xr-x 1 root root 90 May 5 14:08 yum.cron