Script to check for valid ip

!/bin/bash function validateIP() { local ip=$1 local stat=1 if [[ $ip =~ ^[1]{1,3}.[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}$ ]]; then OIFS=$IFS IFS='.' ip=($ip) IFS=$OIFS [[ ${ip[0]} -le 255 && ${ip[1]} -le 255 \ && ${ip[2]} -le 255 && ${ip[3]} -le 255 ]] stat=$? fi return $stat } ipToCheck="192.168.1.1" validateIP $ipToCheck if [[ $? -ne 0 ]];then echo "Invalid IP Address" fi