How to find processes based on port and kill them all? [duplicate]

Find processes based on port number and kill them all.

ps -efl | grep PORT_NUMBER | kill -9 process_found_previously

how to complete the last column?

Solution 1:

The problem with ps -efl | grep PORT_NUMBER is that PORT_NUMBER may match other columns in the output of ps as well (date, time, pid, ...). A potential killing spree if run by root!

I would do this instead :

PORT_NUMBER=1234
lsof -i tcp:${PORT_NUMBER} | awk 'NR!=1 {print $2}' | xargs kill 

Breakdown of command

• (lsof -i tcp:${PORT_NUMBER}) -- list all processes that is listening on that tcp port
• (awk 'NR!=1 {print $2}') -- ignore first line, print second column of each line
• (xargs kill) -- pass on the results as an argument to kill. There may be several.

Solution 2:

1.) lsof -w -n -i tcp:8080

2.) kill -9 processId

Solution 3:

kill $( lsof -i:6000 -t )

Or if you need permissions:

sudo kill $( sudo lsof -i:6000 -t )

Solution 4:

Propose to use fuser command:

fuser -k -TERM -n tcp ${PORT_NUMBER}