Packages with the cron use flag

app-admin / logrotate : Rotates, compresses, and mails system logs

  • Installs cron file

app-crypt / dehydrated : A client for signing certificates with an ACME-server

  • Install cron job to sign/renew non-existent/changed/expiring certificates

app-forensics / chkrootkit : Tool to locally check for signs of a rootkit

  • Install cron script for weekly rootkit scans

app-forensics / lynis : Security and system auditing tool

  • Install /etc/cron.* files

kde-apps / kdeadmin-meta : KDE administration tools - merge this to pull in all kdeadmin-derived packages

  • Installs KDE application for virtual/cron configuration

mail-filter / spamassassin : An extensible mail filter which can identify and tag spam

  • Install a cron job to update SpamAssassin's rules daily.

net-firewall / pglinux : Privacy oriented firewall application

  • Install cron script

sys-apps / etckeeper : A collection of tools to let /etc be stored in a repository

  • Install cron script

sys-fs / e2fsprogs : Standard EXT2/EXT3/EXT4 filesystem utilities

  • Install e2scrub_all cron script

sys-fs / zfs-auto-snapshot : ZFS Automatic Snapshot Service for Linux

  • Install /etc/cron.* files