Как выполнить команду при выключении...?

$ cat /etc/acpi/powerbtn.sh
#!/bin/sh
# /etc/acpi/powerbtn.sh
# Initiates a shutdown when the power putton has been
# pressed.

# If powersaved is running, let it process the acpi event
if pidof powersaved; then
    exit 0
fi

if ps -Af | grep -q '[k]desktop' && test -f /usr/bin/dcop
then
    dcop --all-sessions --all-users ksmserver ksmserver logout 0 2 0 && exit 0
else
    /sbin/shutdown -h now "Power button pressed"
fi

....

# Hint: switch_vt could be useful for the LID_OPEN event (replace ignore) # some graphic cards might need switching to a virtual terminal # and back to let the X-server recover properly EVENT_BUTTON_POWER="wm_shutdown"

....

s/wm_shutdown/switch_vt/