source: clfs-embedded/bootscripts/clfs/etc/rc.d/shutdown@ a44b91b

#!/bin/ash

# System Shutdown Script
#

PATH=/bin:/sbin:/usr/bin:/usr/sbin

echo
echo "System is going down for reboot or halt now."
echo

. /etc/rc.d/init.d/functions

echo "Starting local stop scripts."

for i in /etc/rc.d/stop/*
do
        if [ -x $i ]; then
                $i stop
        fi
done

echo -n "Syncing hardware clock to system clock:"
hwclock --systohc --utc
check_status

echo -n "Disabling swap space: "
swapoff -a
check_status

echo -n "Syncing all filesystems: "
sync
check_status

echo -n "Unmounting all filesystems: "
umount -a -r
check_status