问题
I want to define a bash alias named kill3000 to automate the following task:
$ lsof -i:3000
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
ruby 13402 zero 4u IPv4 2847851 0t0 TCP *:3000 (LISTEN)
$ kill -9 13402
回答1:
alias kill3000="fuser -k -n tcp 3000"
回答2:
Try this:
kill -9 $(lsof -i:3000 -t)
The -t flag is what you want: it displays PID, and nothing else.
UPDATE
In case the process is not found and you don't want to see error message:
kill -9 $(lsof -i:3000 -t) 2> /dev/null
Assuming you are running bash.
UPDATE
Basile's suggestion is excellent: we should first try to terminate the process normally will kill -TERM, if failed, then kill -KILL (AKA kill -9):
pid=$(lsof -i:3000 -t); kill -TERM $pid || kill -KILL $pid
You might want to make this a bash function.
回答3:
Another option using using the original lsof command:
lsof -n -i:3000 | grep LISTEN | awk '{ print $2 }' | uniq | xargs kill -9
If you want to use this in a shell script, you could add the -r flag to xargs to handle the case where no process is listening:
... | xargs -r kill -9
回答4:
How about
alias kill3000="lsof -i:3000 | grep LISTEN | awk '{print $2}' | xargs kill -9"
回答5:
fuser -n tcp 3000
Will yield the output of
3000/tcp: <$pid>
So you could do:
fuser -n tcp 3000 | awk '{ print $2 }' | xargs -r kill
回答6:
fuser -k 3000/tcp should also work
来源：https://stackoverflow.com/questions/9168392/shell-script-to-kill-the-process-listening-on-port-3000