LOCK_CMD=$(xfconf-query -c xfce4-session -p /general/LockCommand)

if [ -n "$LOCK_CMD" ]; then
    /bin/sh -c "$LOCK_CMD" && exit
    exit_code=$?
    >&2 printf "'%s' exited with status %d\n" "$LOCK_CMD" $exit_code
    exit $exit_code
fi

# Try our screensaver first
xfce4-screensaver-command --lock </dev/null 2>/dev/null && exit

# This list should be kept in sync with XfceScreensaver (libxfce4ui)
xdg-screensaver lock </dev/null 2>/dev/null && exit
for lock_cmd in \
    xscreensaver-command \
    light-locker-command \
    gnome-screensaver-command \