#!/bin/bash A="90:00:00" H="45:00:00" function sendcmd(){ echo $1 | nc 192.168.70.33 10001 -q10 } sendcmd ":Sz${A}#" sendcmd ":Sa${H}#" sendcmd ":MS#" while true; do ANS=$(sendcmd ":Gstat#") echo $ANS [ $ANS == "0#" ] && break sleep 2 done