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I am building an app and it hangs on some thread . how can i kill that app ?

tried ctrl+c but it didn't work (the icon stays in the notification area)


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up vote 4 down vote accepted

Try to kill it via the process list:

Process List

Or - if you want to be more nerdy - kill it via the console, using $>top

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i just didnt know it's name ... it was python :s – Ronan Dejhero Oct 4 '12 at 13:31
Maybe you can identify it using pstree. I suggest looking through the leaves. – cauon Oct 4 '12 at 13:39

If you know the name of your process, grep against ps to get the PID (process ID). Example: If I wanted to stop shotwell, I would do this (from a terminal session):

$ ps -ef | grep shotwell
xaap001   1779  1139  8 08:08 ?        00:00:01 shotwell
xaap001   1792  1703  0 08:08 pts/1    00:00:00 grep --color=auto shotwell

The first process listed is the one I want (in this example), and the first number listed is the PID. You can also see that the command I just ran is listed in there, too.

Now that I have my PID (1779), I can stop the process with this command:

$ kill -9 1779
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I suggest that you enter


That will suspend the process and tell you its job number.


kill -9 %1

if its job number is 1. After you press enter the first time it will mention that [1] is stopped. The next time you press enter it will tell you it is killed or terminated.

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+1: this is exactly what I do. You can omit the -9 code though. – Timo Oct 13 '12 at 20:40

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