port to pid / pid to port mapper

Finally, I've developed the mutual pid/port mapper.

Here it is. Feel free to use.

#!/bin/bash
#
# The mutual pid/port mapper
# - Marcin Wisnios [marcin AT wisnios.com]
#
case "$1" in
'')
        echo "Usage: $0 PORT | -p PID | -n NAME | -a (ALL)"
        exit 1
        ;;
'-p')
        # pid search
        P_ID=$2
        ;;
'-n')
        # name search
        P_ID=`pgrep $2`
        ;;
'-a')
        # list all
        P_ID=`ps -e -o pid,comm | sed '/PID/d; /ps/d; /sed/d; /bash/d; s/\([0-9]\{1,5\}\).*/\1/p;d'`
        ;;
*)
        # port search
        P_ID=`ps -e -o pid,comm | sed '/PID/d; /ps/d; /sed/d; /bash/d; s/\([0-9]\{1,5\}\).*/\1/p;d'`
        PORT=$1
        ;;
esac

for P in $P_ID; do

        N=`ps -o comm -p $P | sed '/COMMAND/d'`
        N=`basename $N`

        pfiles $P | sed 's/.*sockname:\ AF_INET[6]\{0,1\} \(.*\)\ \ port:\ \(.*\)/\1:\2/p;d' | while read L; do
                if [ -z $PORT ]; then
                        echo "$L $P/$N"
                else
                        echo "$L $P/$N" | sed "/:$PORT/p;d"
                fi
        done

done

Examples of use:

book [/home/wisnios]# ./ppm.sh 22
:::22 6963/sshd
::ffff:208.64.63.178:22 13491/sshd
::ffff:208.64.63.178:22 13507/sshd

book [/home/wisnios]# ./ppm.sh -n ns-slapd
:::389 7128/ns-slapd
:::636 7128/ns-slapd

book [/home/wisnios]# ./ppm.sh -p 20623
0.0.0.0:80 20623/cherokee-worker