rendered paste body#!/bin/shif [ $1 ]then OUTSIGNAL="$1SIGNAL" OUTNOISE="$1NOISE" OUTSNR="$1SNR" i=1 echo "Processing\c" while [ $i -le 20 ] do SIGNAL=$(iwconfig eth1 | grep 'Signal level') #| \\ # sed 's/.*[\:=]\([0-9]*\).*[\:=]\(-*[0-9]*\).*[\:=]\(-*[0-9]*\).*/\2/') NOISE=$(iwconfig eth1 | grep 'Noise level') # | \\ # sed 's/.*[\:=]\([0-9]*\).*[\:=]\(-*[0-9]*\).*[\:=]\(-*[0-9]*\).*/\3/') SNR= 'expr $SIGNAL - $NOISE' echo $SIGNAL >> $OUTSIGNAL echo $NOISE >> $OUTNOISE echo $SNR >> $OUTSNR echo ".\c" sleep 3s i='expr $i + 1' done echo "\nCompleted!"else echo "ERROR: Output file not entered!" exit 1fi