There is two ways to find PID by knowing which port is used: Lsof ( L i S t O pen F iles) lsof | grep <port_number> 1. lsof doesn’t work from non-global zone. 2. Use -z option with lsof to list open files & processes with in non-global zone like “ lsof -z ” Script for know the process for port using #!/usr/bin/ksh # #grep -v "^#" /etc/services | awk '{print $2}' | cut -d"/" -f1 | sort -n | uniq >sorted-services line='-------------------------------------------------------------------------' pids=`/usr/bin/ps -ef | sed 1d | awk '{print $2}'` # Prompt users or use 1st cmdline argument while [ $# -eq 0 ]; do 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" #/export/baha/s