How to find out a window's process ID?

Kevin Krammer kevin.krammer at
Mon Dec 8 22:18:27 GMT 2003

On Monday 08 December 2003 18:24, Josep Febrer wrote:
> A Divendres 28 Novembre 2003 07:47, TK va escriure:
> > There are tools to do it on other platforms, but I don't how to do it in
> > KDE, or should I say in XFree86?
> To know the PID from the active window you can try something like this:
> window=`xprop -root | grep '_NET_ACTIVE_WINDOW(WINDOW)' | awk '{print
> $5;}'` pid=`xprop -id $window | grep NET_WM_PID | awk '{print $3;}'`
> Josep

KWin class
can tell you the PID of the process.
Not sure if this works with remote processes.

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