Crontabs handles a basic system function, so it should be installed on
your system.
drwxr-xr-x 2 root root 0 Aug 25 1999 /etc/cron.daily drwxr-xr-x 2 root root 0 Aug 25 1999 /etc/cron.hourly drwxr-xr-x 2 root root 0 Aug 25 1999 /etc/cron.monthly drwxr-xr-x 2 root root 0 Aug 25 1999 /etc/cron.weekly -rw-r--r-- 1 root root 255 Aug 25 1999 /etc/crontab -rwxr-xr-x 1 root root 505 Aug 25 1999 /usr/bin/run-parts