#!/bin/bash
    S1=$1
    S2=$2
    if [ $S1 != $S2 ];
    then
            echo "S1('$S1') is not equal to S2('$S2')"
    fi
    if [ $S1 = $S2 ];
    then
            echo "S1('$S1') is equal to S2('$S2')"
    fi