最简单新机优化

#/bin/bash
read -p "set your hostname is :   " name
#设置主机名
hostnamectl set-hostname $name
if [ $? = 0 ];then
   echo "setting..."
   sleep 2
   echo "Successful!!!"
   sleep 1
   echo "please login again..."
else
   echo "Setup failed please try again"
fi
echo '==================================================================================================================='
#设置命令行变量
echo 'export PS1="[\[\e[33;1m\]\u@\[\e[0m\]\[\e[32;1m\]\H\[\e[0m\] \[\e[32;1m\]\w\[\e[0m\]]\\$"' >> /etc/profile
if [ $? = 0  ];then
   source /etc/profile
   echo "profile set ok"
else
   echo "perofile set error"
fi
echo '==================================================================================================================='
epel=/etc/yum.repos.d/epel.repo
if [ -f $epel ];then
   echo 'epel yes'
else
   echo 'down...'
   wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo
   sleep 1
   echo 'epel ok' 
fi
#安装基础工具
echo '==================================================================================================================='
yum -y install   tree   vim wget  bash-completion  bash-completion-extras  lrzsz  net-tools sysstat  iotop iftop htop unzip nc nmap telnet bc  psmisc httpd-tools  bind-utils nethogs
clear
echo '==================================================================================================================='
echo 'yes!!!!!!!!!!!'