Bash: kill with pipe

Question

Trying to kill very process related to Java. Is there a way to use pipe for it? I have tried

ps -e|grep "java"|kill

and

ps -e|grep "java"|xargs kill

Neither works.

I cannot easily test this, but I think you should isolate the process number. Something like `ps -e|grep "java"| awk '{print $2}' | xargs kill`. — Beta, Jun 05 '13 at 03:48
Tested it. And ps -e|grep "java"| awk '{print $1}' | xargs kill is the answer I was originally looking — Bin Zhou, Jun 05 '13 at 04:42
possible duplicate of [Killing linux process by piping the id](http://stackoverflow.com/questions/20570999/killing-linux-process-by-piping-the-id) — tripleee, Aug 22 '14 at 11:59
Worth noting that `killall` and other ways to kill all processes with that name may cause unwanted behavior, so use with caution. — Stian OK, Aug 04 '15 at 08:42

score 14 · Answer 1 · answered Jun 05 '13 at 03:45

14

pgrep is the right tool for grepping processes:

kill $(pgrep -f java)

the -f flag in pgrep is for matching against the full command line used to execute a process.

answered Jun 05 '13 at 03:45

perreal

6

Good point re `pgrep`, but since the intent is to *kill*, why not use its cousin, `pkill`, directly? – mklement0 Jun 05 '13 at 04:25
1

Thank you. Both of them work. I did not know pkill/pgrep before – Bin Zhou Jun 05 '13 at 04:45

score 6 · Answer 2 · answered Jun 05 '13 at 03:47

6

There is, but this is easier (presuming your system has killall):

killall java

answered Jun 05 '13 at 03:47

antak

score 0 · Answer 3 · answered Nov 21 '18 at 17:49

0

You can also use pkill java. pkill is pgrep and kill combined into one command.

answered Nov 21 '18 at 17:49

uli42

3 Answers3