#!/bin/sh BS=$((128*1024)) COUNT=10000 CONCURENT=200 IP="192.168.2.13" pids="" i=0 MESSAGE="GET / HTTP/1.1\r\nConnection: keep-alive\r\n\r\n" while [ $i -lt ${CONCURENT} ] do dd if=/dev/zero bs=${BS} count=${COUNT} | nc -q 1 ${IP} 5678 >/dev/null & #echo -en "${MESSAGE}" | nc -q 1 ${IP} 5678 & pids="${pids} $!" i=$((i + 1)) done wait ${pids}