Turn off the firewall and SELinux

 1. Turn off the firewall and SELinux

[root@server ~]# systemctl stop firewalld       //临时关闭

[root@server ~]# systemctl disable firewalld    //取消开机启动

[root@server ~]# setenforce 0                   //临时关闭，重启失效

2. Set the host name

[root@server ~]# hostnamectl set-hostname       //新主机名

[root@server ~]# reboot                         //重启系统

3. Change the yum warehouse source 

//   使用xftp将yum配置文件上传到/etc/yum.repos.d目录中
[root@server ~]# yum clean all
[root@server ~]# yum makecache

4. Make snapshots

vmware settings- > Virtual machine menu- > Snapshot- > Take a snapshot- > Name (see the name) -> Take a snapshot- > Wait for the progress in the lower left corner to finish

congratulations! ! ! At this point, all software installation and operating system installation processes are over.

 

5. Correct shutdown and restart

• Reboot: reboot
• Shutdown: shutdown now

 6. Common shortcut keys and commands

shortcut key	effect
Tab	word completion
ctrl+c	Terminate current task
ctrl+l	clear screen
ctrl+insert	copy
shift+insert	Paste
ctrl+shift+=	Enlarge font size
ctrl+-	Reduce font size
ctrl+z	Terminate process