How to find and clear zombie processes w/o rebooting?

[Patrick O'Callaghan]

On Thu, 2008-06-26 at 12:34 +1000, Cameron Simpson wrote:
>   xterm &
>   xclock &
>   window-manager
> 
> So, that is a shell script. It kicks off a terminal, a clock and a
> window manager. It waits for that last. When the window manager exits
> (usually from the quit/logout menu item), the session ends, and
> gdm/xdm
> kills the X server and starts a new server for a new login prompt.
> 
> Now.. if the terminal or clock exit, they will be zombies.

In fact the Shell waits for forked processes, so they won't be zombies.

poc