Case

#!/bin/sh
 
usage="usage: $0 hostname [-p pool_number] [-t] [-c ping_count]
tpool_number - 0 for real IP address, 1..4 - for NAT pool number
t-t - do traceroute instead of just pingn"
 
host=$1
[ "x$host" = "x" ] && echo -e "$usage" && exit
 
shift
 
pingcount=3
poolnumber=""
tracemode=0
 
while [ "x$1" != "x" ] ; do
        case "$1" in
                "-p")
                        shift
                        poolnumber="$1"
                ;;
                "-c")
                        shift
                        pingcount="$1"
                ;;
                "-t")
                        tracemode=1
                ;;
        esac
        shift
done
 
ips="0 213.79.110.123 1 `ifconfig ng0|grep inet|awk '{print $2}'`"
 
set $ips
 
while [ "x$1" != "x" ] ; do
        if [ "x$poolnumber" = "x" -o "x$1" = "x$poolnumber" ] ; then
 
                echo "******************************************************************************"
                if [ "$1" -eq "0" ] ; then
                        echo "* TESTING TARGET FROM: ZELCOM                                                *"
                else
                        echo "* TESTING TARGET FROM: STREAM                                                 *"
                fi
                echo "******************************************************************************"
 
                if [ "x$tracemode" = "x1" ] ; then
                        sudo traceroute -I -s $2 $host
                else
                        sudo ping -S $2 -c $pingcount $host
                fi
 
        fi
        shift 2
done