my-dbus-launch.sh

# This snippet is indended to be paseted in `.xinitrc'. Then D-Bus Daemon
# can be started on startup and all sub-processes the windows manager can
# communicate with the daemon.
#
# `.bashrc' also can source the file `/tmp/dbus-session$UID' to restore the
# environment variables

dbus_address=$(echo "$DBUS_SESSION_BUS_ADDRESS" |\
              awk 's/^.*unix:abstract=\([^,]*\),.*$/\1/')
if [ -S "$dbus_address" ] && netstat -nlpx 2> /dev/null |\
                             awk '{print $NF}' |\
                             grep -qF "$dbus_address"; then
   echo "export DBUS_SESSION_BUS_ADDRESS=$DBUS_SESSION_BUS_ADDRESS" > /tmp/dbus-session$UID
   if [ -n "$DBUS_SESSION_BUS_PID" ]; then
       echo "export DBUS_SESSION_BUS_PID=$DBUS_SESSION_BUS_PID" >> /tmp/dbus-session$UID
   fi
else
   process=
   [ -f /tmp/dbus-session$UID ] && source /tmp/dbus-session$UID > /dev/null
   if [ -n "$DBUS_SESSION_BUS_PID" ]; then
       process=$(ps -p "$DBUS_SESSION_BUS_PID" -o comm= 2> /dev/null)
   fi
   if [ "$process" != "dbus-daemon" ]; then
       dbus-launch --sh-syntax --exit-with-session > /tmp/dbus-session$UID
       source /tmp/dbus-session$UID
       export DBUS_SESSION_BUS_ADDRESS DBUS_SESSION_BUS_PID
   fi
fi