freebsd-dev/etc/periodic/monthly/200.accounting

#!/bin/sh -
#
# $FreeBSD$
#

# If there is a global system configuration file, suck it in.
#
if [ -r /etc/defaults/periodic.conf ]
then
    . /etc/defaults/periodic.conf
    source_periodic_confs
fi

case "$monthly_accounting_enable" in
    [Yy][Ee][Ss])
	W=/var/log/wtmp
	rc=0
	remove=NO
	if [ ! -f $W.0 ]
	then
	    if [ -f $W.0.gz ]
	    then
		remove=YES
		zcat $W.0.gz > $W.0 || rc=1
	    else
		echo '$monthly_accounting_enable is set but' \
		    "$W.0 doesn't exist"
		rc=2
	    fi
	fi
	if [ $rc -eq 0 ]
	then
	    echo ""
	    echo "Doing login accounting:"

	    rc=$(ac -p -w $W.0 | sort -nr +1 | tee /dev/stderr | wc -l)
	    [ $rc -gt 0 ] && rc=1
	fi
	[ $remove = YES ] && rm -f $W.0;;

    *)  rc=0;;
esac

exit $rc