How to find process id which is using specific port?

This script will simply give you which process is exactly using your port. Just copy the script in a shell and execute.You need to supply port value as an input while executing the script.

Ex : ./script_name.sh 7213

Script get_port_pid.sh:

#!/bin/bash

# Get the process which listens on port

# $1 is the port we are looking for

if [ $# -lt 1 ]
then
echo "Please provide a port number parameter for this script"
echo "e.g. $0 22"
exit
fi

echo "Greping for your port, please be patient (CTRL+C breaks) ... "

for i in `ls /proc`
do
pfiles $i | grep AF_INET | grep $1
if [ $? -eq 0 ]
then
echo Is owned by pid $i
fi
done