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Sometimes I need to end a process quickly via terminal but it is tedious to just type ps -e | grep firefox and then kill all the time. I want to create an alias in my .bashrc and just type in killfirefox

I guess this would do it but I don't really understand everything.

so I've learn that either ps -e | grep firefox | sudo awk '{print $1}' or pgrep firefox will return the pid of firefox which I need to kill a process. I thought this would do the job :

pgrep firefox | sudo awk '{kill $1}' but it doesn't work. It says nothing and firefox is still running. I then tried pgrep firefox | sudo awk '{system(sudo kill $1)}' but then it returns "sh: 1: 27762: not found".

Why doesn't my way work? What's wrong?

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    your way doesn't work because it makes no sense. it's both wrong and massively over-complicated (e.g. why do you think you need sudo to kill a process you own?). BTW, if you have pgrep, you also have pkill. – cas May 1 '16 at 10:57
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    You also could try killall firefox or killall -r firefox. – Thomas May 1 '16 at 11:02
  • Upvoting this. Because overkill can be instructive sometimes. In French we call it "chercher midi à quatorze heures". – user86969 May 1 '16 at 17:05
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To have your way works you have to fix the awk syntax and use the system function to execute commands in awk:

pgrep firefox | awk '{system("kill "$1)}'

Then you have your own-made (wheel reinvented) equivalent of:

pkill firefox

as pointed out in your question comments.

1

For applications like Firefox, I just use killall firefox.

man killall

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ps -U root -u root | grep "process command word occurrence" or " anything to match" | sudo awk '{system ("sudo kill "$2)}

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    This is even more typing than the OP already was doing – Anthon Sep 2 '17 at 6:20
  • original command by OP > ps -e | grep firefox | sudo awk '{print $1}' – KaziMurtaza Sep 5 '17 at 8:06

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