Unix Script to get the PID from the Port

Hi All

the below is a script that takes the port and give you the PID that open this port
Note:- you should have permission on this PID or let the root run the script

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#!/bin/ksh

line='-------------------------------------------------------------------------'
pids=`/usr/bin/ps -ef | sed 1d | awk '{print $2}'`

# Prompt users or use 1st cmdline argument
if [ $# -eq 0 ]; then
         read ans?"Enter port you like to know pid for:  "
else
         ans=$1
fi

# Check all pids for this port, then list that process
for f in $pids
do
         /usr/proc/bin/pfiles $f 2>/dev/null | /usr/xpg4/bin/grep -q "port: $ans"
         if [ $? -eq 0 ] ; then
                 echo "$line\nPort: $ans is being used by PID: \c"
                 /usr/bin/ps -o pid -o args -p $f | sed 1d
         fi
done
exit 0

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