send new ifcfg

gistfile1.txt

#!/bin/bash
set -x
#oldName=$(grep DEVICE  /etc/sysconfig/network-scripts/ifcfg-ens3 | awk -F '"' '{print $2}')
intName=$(ip link | egrep -v "lo|link" | awk -F ': ' '{print $2}')
ifcfgfile="/etc/sysconfig/network-scripts/ifcfg-$intName"
mv /etc/sysconfig/network-scripts/ifcfg-$intName /etc/sysconfig/network-scripts/ifcfg-$intName.bak
touch $ifcfgfile


for i in "DEVICE=$intName" "ONBOOT=yes"
do 
	echo $i >> $ifcfgfile
done

read -p "Static or dhcp?" yoursetup

if [ $yoursetup = "static" ];then
	read -p "What is your Ip Address : " yourip
	read -p "What is your Gateway : " yourgw
	read -p "What is your subnet/prefix? : " yourprefix
	read -p "What is your dns? : " yourdns
	for j in "BOOTPROTO=static" "IPADDR=$yourip" "GATEWAY=$yourgw" "PREFIX=$yourprefix" "DNS=$yourdns" "NMCONTROLLED=no"
	do 
		echo $j >> $ifcfgfile
	done
else
	echo "BOOTPROTO=dhcp" >> $ifcfgfile
	echo "NMCONTROLLED=no" >> $ifcfgfile
fi
systemctl disable NetworkManager
systemctl stop NetworkManager
service network stop
sleep 2
service network start
exit 0