Suggested /etc/cron.monthly/rwhod script.

netkit-rwho-0.17-cron (text/plain), 288 bytes, created by Philippe Troin on 2005-12-06 21:39:55 UTC

#!/bin/sh
# Copyright 1999-2005 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header$
#
# Clean up stale rwho entries after one month
find /var/spool/rwho -mindepth 1 -maxdepth 1 -type f ! -name .keep \
    ! -ctime -30 -print0 | xargs -r0 rm -f