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#!/bin/env bash
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin
export PATH

# Check if user is root
if [ $(id -u) != "0" ]; then
    echo "Error: You must be root to run this script, please use root to initialization OS."
    exit 1
fi

read -p "Enter the IP address:" ipadd
read -p "Enter the gateway:" gate

function RENMAE_NIC()
{
	local _NICNAME=$(ip addr | grep "^2"|awk -F ": " '{print $2}')
	if [[ ${_NICNAME} != "eth0" ]];then
		echo -e "\e[31m The nic name is [\e[31;1m${_NICNAME}\e[0m].\n Press 'Enter' key rename nic name to 'eth0'.\e[0m"
		read -t 5
		echo "IPADDR=$ipadd
NETMASK=255.255.255.0
GATEWAY=$gate" >> /etc/sysconfig/network-scripts/ifcfg-${_NICNAME}
		sed -i "s/dhcp/static/g" /etc/sysconfig/network-scripts/ifcfg-${_NICNAME}
		sed -i s/"^NAME=.*$"/"NAME=eth0"/g /etc/sysconfig/network-scripts/ifcfg-${_NICNAME}
		sed -i s/"^DEVICE=.*$"/"DEVICE=eth0"/g /etc/sysconfig/network-scripts/ifcfg-${_NICNAME}
		mv /etc/sysconfig/network-scripts/ifcfg-${_NICNAME} /etc/sysconfig/network-scripts/ifcfg-eth0
		sed -i s/'rhgb quiet"$'/'net.ifnames=0 biosdevname=0 rhgb quiet"'/g /etc/default/grub
		grub2-mkconfig -o /boot/grub2/grub.cfg
		echo -e "\e[32m The nic name has renamed.\n Press 'Enter' key reboot.\e[0m"
		read -t 5
		reboot
	fi
	unset local _NICNAME
}
RENMAE_NIC

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标签: centos shell ip 一键 自动 静态 eth0