S99debian script with multiple external folders

#!/bin/sh
PATH=/opt/bin:/opt/sbin:/sbin:/bin:/usr/sbin:/usr/bin
# Folder with Chrooted Debian
CHROOT_DIR=/tmp/mnt/sda1/optware-ng.arm/debian
# Some folder/folders outside of sandbox,
# will be mounted to /mnt, /mnt2... folders inside Debian
# Uncommented next 1-3 lines starting with "EXT_DIR" if you need
# to mount a folder or more inside chrooted debian
# EXT_DIR=/tmp/mnt/sda1/Media/
# EXT_DIR2=/tmp/mnt/sda1/Media2/
# EXT_DIR3=/jffs/
CHROOT_SERVICES_LIST=/opt/etc/chroot-services.list
if [ ! -e "$CHROOT_SERVICES_LIST" ]; then
    echo "Please, define Debian services to start in
$CHROOT_SERVICES_LIST first!"
    echo "One service per line. Hint: this is a script names from
Debian's /etc/init.d/"
    exit 1
fi
MountedDirCount="$(mount | grep $CHROOT_DIR | wc -l)"
start() {
    if [ $MountedDirCount -gt 0 ]; then
        echo "Chroot'ed services seems to be already started,
exiting..."
        exit 1
    fi
    echo "Starting chroot'ed Debian services..."
    for dir in dev proc sys; do
        mount -o bind /$dir $CHROOT_DIR/$dir
    done
    [ -z "$EXT_DIR" ] || mount -o bind $EXT_DIR $CHROOT_DIR/mnt
    [ -z "$EXT_DIR2" ] || mkdir -p $CHROOT_DIR/mnt2 && mount -o bind $EXT_DIR2 $CHROOT_DIR/mnt2
    [ -z "$EXT_DIR3" ] || mkdir -p $CHROOT_DIR/jffs && mount -o bind $EXT_DIR3 $CHROOT_DIR/jffs
    for item in $(cat $CHROOT_SERVICES_LIST); do
        chroot $CHROOT_DIR /etc/init.d/$item start
    done
    }
stop() {
    if [ $MountedDirCount -eq 0 ]; then
        echo "Chroot'ed services seems to be already stopped,
exiting..."
        exit 1
    fi
    echo "Stopping chroot'ed Debian services..."
    for item in $(cat $CHROOT_SERVICES_LIST); do
        chroot $CHROOT_DIR /etc/init.d/$item stop
        sleep 2
    done
    mount | grep $CHROOT_DIR | awk '{print $3}' | xargs umount -l
    }
restart() {
    if [ $MountedDirCount -eq 0 ]; then
        echo "Chroot'ed services seems to be already stopped"
        start
        else
        # echo "Stopping chroot'ed Debian services..."
    for item in $(cat $CHROOT_SERVICES_LIST); do
        chroot $CHROOT_DIR /etc/init.d/$item stop
        sleep 2
    done
    mount | grep $CHROOT_DIR | awk '{print $3}' | xargs umount -l
        echo "Restarting chroot'ed Debian services..."
    for dir in dev proc sys; do
        mount -o bind /$dir $CHROOT_DIR/$dir
    done
    [ -z "$EXT_DIR" ] || mount -o bind $EXT_DIR $CHROOT_DIR/mnt
    [ -z "$EXT_DIR2" ] || mkdir -p $CHROOT_DIR/mnt2 && mount -o bind $EXT_DIR2 $CHROOT_DIR/mnt2
    [ -z "$EXT_DIR3" ] || mkdir -p $CHROOT_DIR/jffs && mount -o bind $EXT_DIR3 $CHROOT_DIR/jffs
    for item in $(cat $CHROOT_SERVICES_LIST); do
        chroot $CHROOT_DIR /etc/init.d/$item start
    done
    fi
    }
enter() {
    [ -z "$EXT_DIR" ] || mount -o bind $EXT_DIR $CHROOT_DIR/mnt
    mount -o bind /dev/ /opt/debian/dev/
    mount -o bind /dev/pts /opt/debian/dev/pts
    mount -o bind /proc/ /opt/debian/proc/
    mount -o bind /sys/ /opt/debian/sys/
    chroot /opt/debian /bin/bash
    }
status() {
    if [ $MountedDirCount -gt 0 ]; then
        echo "Chroot'ed services running..."
    else
        echo "Chroot'ed services not running!"
    fi
    }
case "$1" in
    start)
        start
        ;;
    stop)
        stop
        ;;
    restart)
        restart
        ;;
    enter)
        enter
        ;;
    status) status
        ;;
    *)
        echo "Usage: (start|stop|restart|enter|status)"
        exit 1
        ;;
esac
echo Done.
exit 0