Linux adds super administrator instance code

How to add super administrator, view all users, and reset user files in Linux? This article will briefly introduce it to you.

useradd test #添加用户passwd test    
’ #设置密码usermod -g root test #设置用户权限su test #切换用户cat /etc/passwd  
#查看所有用户信息cp /etc/passwd- /etc/passwd  
#重置配置文件，需要root权限才能覆盖，所以丢失该文件之后要第一时间保证root的登录状态，重启就麻烦了（要么重装系统，要么在机箱上装系统盘进行恢复）

vi /etc/passwd   #设置账户配置信息

test:x:0:0::/home/test:/bin/bash

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