~NAXC~

File Content: `addip.sh`

#!/bin/bash
restart_network()
{
if [ -f /etc/centos-release ]; then
         OSNAME="CentOs"
         OSVERSION_FULL=$(sed 's/^.*release //;s/ (Fin.*$//' /etc/centos-release)
         VERSION=${OSVERSION_FULL:0:1} # return 6 or 7
        if [ $VERSION -eq 8 ]; then
		systemctl restart NetworkManager.service
		/usr/bin/nmcli networking off
       		/usr/bin/nmcli networking on
        else
        service network restart >>$null_path;
        fi
        fi
}
IPprefix_by_netmask() {
#function returns prefix for given netmask in arg1
 ipcalc -p 1.1.1.1 $1 | sed -n 's/^PREFIX=\(.*\)/\/\1/p'
}

null_path="/dev/null";
if [ "$#" -lt 2 ]; 
then
        echo "";
else
        method_detail=$1;
        case $method_detail in
        addip)			
                IP=$2
		ALREADY=$(grep "IPADDR=$IP" -Rl /etc/sysconfig/network-scripts/ifcfg-*)
		if [ ! -z $ALREADY ]
		then
        		echo "ALREADY IP ADDED $ALREADY";exit;
		fi
		enth=$(ip route | grep -v default | head -n 1 | awk '{ print $3 }')
		if [ -z $enth ] 
		then
	        enth=$3
	        fi	
		orginal_net_file="/etc/sysconfig/network-scripts/ifcfg-$enth"
		sed -i "s/^HWADDR=/#HWADDR=/g" $orginal_net_file
		IPADDR=$(cat $orginal_net_file | grep "^IPADDR=" | awk -F"=" '{ print $2 }') 
		echo "orginal_net_file $orginal_net_file"
		if [ -f $orginal_net_file ]
		then
			i=0
			while true
			do
				adaterFile=$orginal_net_file:$i	
				if [ ! -f $adaterFile ]
				then
					break;
				fi
				i=`expr $i + 1`		
			done
			cp -pr $orginal_net_file $adaterFile
			sed -i "s/NAME=$enth/NAME=$enth:$i/g" $adaterFile
			sed -i "s/DEVICE=$enth/DEVICE=$enth:$i/g" $adaterFile
			sed -i "s/IPADDR=$IPADDR/IPADDR=$IP/g" $adaterFile
		fi
		ifup $adaterFile
                restart_network
                echo "1";
                ;;
        remvip)
		IP=$2
		orginal_net_dir="/etc/sysconfig/network-scripts/ifcfg-*"
		adaterFile=$(grep "IPADDR=$IP" -l /etc/sysconfig/network-scripts/ifcfg-*)
		grep "IPADDR=$IP" -l /etc/sysconfig/network-scripts/ifcfg-* | while read adaterFile
		do
			if [ -f $adaterFile ]
			then 	
				IPADDR=$(grep "IPADDR=" $adaterFile | awk -F"=" '{ print $2 }' | tr -d "\n")
				ADAPTER=$(echo $adaterFile | awk -F"/" '{ print $NF }' | sed 's/ifcfg-//g')
				NETMASK=$(grep "NETMASK=" $adaterFile | awk -F"=" '{ print $2 }' | tr -d "\n")
				CIDR=$(IPprefix_by_netmask $NETMASK)       
				rm -f $adaterFile
				ifdown $ADAPTER	
				ip addr del $IPADDR$CIDR dev $ADAPTER	
				restart_network
			fi	
		done 
		;;
        *)
                echo "";
                ;;
        esac
fi
File Content: addip.sh

File Content: `addip.sh`
