Linux: How to Kill X windows halted, frozen or resource eating application

Q. How do I kill X windows (or application) that is not die from local or remote X sever?

A. You need to use xkill command. It kills a client by its X resource and not by process ID. For example, your application may not be responding kill request. Even if you try to kill you see application window.

xkill is a utility for forcing the X server to close connections to clients. This program is very dangerous, but is useful for aborting programs that have displayed undesired windows on a user's screen.

Just type command xkill
$ xkill

And click on application which you want to abort forcefully or select the window/application whose client you wish to kill with button 1.

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