Unix Revolution

I found a nifty script out there that would pound through the /proc files and figure out what process(es) had a particular port without the use of lsof. I, unfortunately, do not know who to credit for this piece of work but I will gladly update this if someone knows the creator. #!/bin/ksh line='---------------------------------------------' pids=$(/usr/bin/ps -ef | sed 1d | awk '{print $2}') if [ $# -eq 0 ]; then    read ans?"Enter port you would like to know pid for: " else    ans=$1 fi 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       echo "Port: $ans is being used by PID:\c"       /usr/bin/ps -ef -o pid -o args | egrep -v "grep|pfiles" | grep $f    fi done exit 0