bash_Scripting/validate_ip at master · suraj-singh93/bash_Scripting · GitHub

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#!/bin/bash

### valided IP ####
#SAMPLE FILE ENTRY:
#HOST1_IP=xx.xx.xx.xx
#HOST2_IP=xx.xx.xx.xx.xx
#HOST3_IP=xx.xx.xx.256

IP_VALIDATION_FLAG=1

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

    if [ $stat -eq 1 ]; then
       echo -en '\E[31m'"\033[5m ERROR: "$2": "$1" not right format\n\033[0m" | tee -a  $LOG_FILE
       IP_VALIDATION_FLAG=0
    fi
}


Valided_Configuration_IP()
{
        local IP_LIST=`grep -ir _IP <config_file>`
        local SPLIT_LIST=$(echo $IP_LIST | tr " " "\n")
        for IPs in $SPLIT_LIST
        do
                local ip="$(cut -d'=' -f2 <<<"$IPs")"
                local node_name="$(cut -d'=' -f1 <<<"$IPs")";
                valid_ip ${ip} ${node_name};
        done
}

Valided_Configuration_IP;
if [ $IP_VALIDATION_FLAG -eq 0 ]; then
       echo -en '\E[31m'"\033[5m ERROR: Please use right format for IPs\n\033[0m" | tee -a  $LOG_FILE
       exit 1
fi