Validate Ip Address

validateIp.sh

#!/bin/bash
#Validate a IP address

function valid_ip()
{
    local  ip=$1
    local  stat=1

    if [[ $ip =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; 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
}

if [[ ! -n "$1" ]]; then
 echo "Missing data input"
 exit
fi

IP=$1

valid_ip $IP 

if [[ $? -ne 0 ]];then
  echo "Invalid Ip Address ($IP)"
else
  echo "Valid Ip Address ($IP)"
fi

exit