Thursday 20 July 2017

Linux: Know PID running at a specific port number

To know the process id which is running on a specific port number


$ sudo netstat -nlp | grep :1212
   tcp6       0      0 :::1212        :::*   LISTEN      21341/java 


$ lsof -i 

It displays the information of all currently running process like PID, port number, user etc.


Example:-

$ lsof -i
COMMAND     PID    USER   FD   TYPE DEVICE      SIZE/OFF NODE NAME
java       60729   ram  7188u  IPv6  121212      0t0  TCP *:1291 (LISTEN)
java       60850   ram  7181u  IPv6  1212        0t0  TCP *:1195 (LISTEN)
java       60949   ram  8173u  IPv6  1212        0t0  TCP *:2272 (LISTEN)
java       70040   ram  1971u  IPv6  1213        0t0  TCP *:2230 (LISTEN)
java       70142   ram  9072u  IPv6  11111       0t0  TCP *:4449 (LISTEN)
java       70232   ram  1365u  IPv6  111         0t0  TCP *:5585 (LISTEN)
java       70318   ram  1476u  IPv6  111         0t0  TCP *:6514 (LISTEN)
python     70400   ram    43u  IPv4  2222        0t0  TCP *:1232 (LISTEN)
java      180595   ram  3402u  IPv6  22222       0t0  TCP *:3232 (LISTEN)



Then run kill command to kill it.

$kill -9 <PID>

Thanks you.

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