pkg://crontabs-1.7-7.noarch.rpm:7161/HEADER  downloads

Name        : crontabs                     Relocations: (not relocateable)
Version     : 1.7                               Vendor: Red Hat Software
Release     : 7                             Build Date: Fri Aug 27 16:04:42 1999
Install date: (not installed)               Build Host: porky.devel.redhat.com
Group       : System Environment/Base       Source RPM: crontabs-1.7-7.src.rpm
Size        : 4930                             License: public domain
Packager    : Red Hat Software <http://developer.redhat.com/bugzilla>
Summary     : Root crontab files used to schedule the execution of programs.
Description :
The crontabs package contains root crontab files.  Crontab is the
program used to install, uninstall or list the tables used to drive
the cron daemon.  The cron daemon checks the crontab files to see when
particular commands are scheduled to be executed.  If commands are
scheduled, it executes them.

Crontabs handles a basic system function, so it should be installed on
your system.