shell script to kill the process listening on port 3000? [duplicate]
Solution 1:
alias kill3000="fuser -k -n tcp 3000"
Solution 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.