#!/bin/bash
read -p "Enter the new hostname:" newname
oldname=$(cat /etc/sysconfig/network | awk -F "=" ‘{print $2}‘ | sed -n 2p)
echo $oldname $newname
sed -i "s/${oldname}/${newname}/g" /etc/hosts
sed -i "s/${oldname}/${newname}/g" /etc/sysconfig/network原文：http://xoyabc.blog.51cto.com/7401264/1657693