Centos7 初始化

1、禁用selinux，关闭防火墙

setenforce 0
sed -i 's/SELINUX=permissive/SELINUX=disabled/' /etc/sysconfig/selinux
sed -i "s/SELINUX=enforcing/SELINUX=disabled/g" /etc/selinux/config
systemctl stop firewalld.service
systemctl disable firewalld.service

2、安装工具

yum install -y wget lrzsz  tree net-tools bash-completion psmisc vim tcpdump lsof telnet gcc

 3、设置root@xxx颜色

#青蓝色。目的写入export PS1='\[\e[32;36m\][\u@\h \W]\$\[\e[m\] '
echo "export PS1='\[\e[32;36m\][\u@\h \W]\\$\[\e[m\] '" >> /etc/bashrc 
source /etc/bashrc

#黄色。目的写入export PS1='\[\e[0;33m\][\u@\h \W]\$\[\e[m\] '
echo "export PS1='\[\e[0;33m\][\u@\h \W]\\$\[\e[m\] '" >> /etc/bashrc
source /etc/bashrc