centos7基本设置和优化

网络

开启网卡

sed -i '/ONBOOT/s/no/yes/' /etc/sysconfig/network-scripts/ifcfg-ens33

重启网卡

systemctl restart network

更换国内源

备份官方源

cd /etc/yum.repos.d
mkdir repo_bak
mv *.repo  repo_bak

下载阿里云源

curl -O http://mirrors.aliyun.com/repo/Centos-7.repo
curl -O http://mirrors.aliyun.com/repo/epel-7.repo
curl -O http://mirrors.aliyun.com/repo/epel-testing.repo

清理和建立缓存

yum clean all && yum makecache

防火墙和selinux选项

关闭防火墙

systemctl stop firewalld.service
systemctl disable firewalld.service

关闭selinux

sed -i '/SELINUX/s/enforcing/disabled/' /etc/selinux/config

oh my zsh

安装依赖软件

yum install -y zsh git

基本安装

sh -c "$(wget -O- https://raw.githubusercontent.com/robbyrussell/oh-my-zsh/master/tools/install.sh)"

主题和插件选择

vim ~/.zshrc

中文man手册

yum install -y man-pages-zh-CN

时间同步

yum  install -y ntpdate 
echo ntpdate -u ntp.api.bz >>/etc/rc.local

会话超时

sed -i '/#ClientAlive/s/#//' /etc/ssh/sshd_config
systemctl restart sshd

ClientAliveInterval会话超时时间，即为一次
ClientAliveCountMax允许超时次数

xshell 拖动传输文件

yum -y install lrzsz```