How to kill XWin from a script

[fergus@bonhard.uklinux.net]

This might be well-known, in which case sorry for wasting your time.
It can be inconvenient to have one or several copies of XWin remaining after
exiting Cygwin.
You can do "kill PID" but for this you need to know what the PID is and then
type the command explicitly.
A command (or script) which will kill them all stone dead without previous
reference to ps is

    kill `ps | grep XWin | awk '{print $1}'`

Put it in .bash_logout? Or wherever suits.

Fergus