Kill the process occupying a specific port
by Moondaddi on 2019-03-05
Sometimes you can encounter this error which says another process is already occupying the port. You can kill the app or process if you can, the problem is, sometimes it is not available. For example when app was teminated by abnormal ways, it remains and occupy the communication port in background.
Check the current process using specific port
lsof -i:3000 output COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME rust_grap 92304 myuser 3u IPv4 0xffffffffffffffff 0t0 TCP localhost:arepa-cas (LISTEN)
Kill the process
kill -9 92304
use PID number (eg. 92304)