Q: There is a window on my desktop that does not react. It does not even disappear when clicking the close-button.

This page started to wrap up a thread on the LBo mailinglist. We are not quite up to 50 ways to get rid of a program that would not behave, but the list is growing:

ps ax | grep <prgname to get the PID of prgname. After that, we can kill <PID>. If that does not work, kill -9 <PID>

Start xkill (via terminal or your launcher) and click the window to kill. Powerfull. X11 only. Convenient.

killall <prgname> or killall -9 <prgname> kills all the programs with that binary. Might not get the target since sometimes binaries are named differently than the application (OOo → soffice.bin and the like)

It can even be put in a file called “actuallykill” (you can make the name shorter).

#bin/bash

ps aux | grep $1 | awk -F ' ' '{print $2}'| xargs kill

Make it executable and in your path. And then at the command line actuallykill keyword and it will kill all processes that contain keyword.

From the manpage:

pgrep looks through the currently running processes and lists the

process IDs which matches the selection criteria to stdout. All the

criteria have to match. For example, "pgrep -u root sshd" will only

list the processes called sshd AND owned by root.  On the other hand,

"pgrep -u root,daemon" will list the processes owned by root OR daemon.

pkill will send the specified signal (by default SIGTERM) to each process

instead of listing them on stdout.

This is a nice replacement for constructions like

"kill `ps ax|grep 'foo'|grep -v 'grep'|awk '{print $1}'` "

I found it here.