Linux关于用户和组操作的命令

准备工具

本篇已Ubuntu Linux系统为例来讲解Linux关于用户和组操作的命令（只有root权限才可以执行下面讲解的命令！）。不用担心其他发行版系统不能使用这些命令，它们的基本操作都是一样的。（本文后面还有英文翻译文章）

创建用户

在终端输入：

useradd -m -g 用户组名 用户名
-m命令的意思为在创建新用户的同时创建这个用户的家目录
-g命令的意思是将新建的用户归属于哪个用户组
以上两个参数可以不加

查看用户

在终端输入：

cat /etc/passwd
如果用户创建成功，在以上命令执行后显示的结果的最后一行就用关于新建用户的信息

为用户设置密码

在终端输入：

passwd 用户名
按照系统提示执行即可为用户设置密码

删除用户

在终端输入：

userdel 用户名

创建用户组

在终端输入：

groupadd 用户组名
随后可以向查看用户信息一样来查看用户组信息，也就是输入命令：
cat /etc/group
如果用户组创建成功，在以上命令执行后显示的结果的最后一行就用关于新建用户组的信息

删除用户组

在终端输入命令：

gourpdel 用户组名

切换用户

输入命令：

su 用户名
还可以输入命令直接切换到用户的家目录，输入命令：
su - 用户名

退出当前用户

输入命令：

exit

The following is the English translation above：

means of preparation

This article uses the Ubuntu Linux system as an example to explain Linux commands about user and group operations (only root permissions can execute the commands explained below!). Don't worry that other distribution systems can't use these commands. Their basic operations are the same.

Create user

Enter at the terminal:

useradd - m - g usergroupname username

-The m command means to create the user's home directory while creating a new user

-The g command means which user group the new user belongs to

The above two parameters can be omitted

View users

Enter at the terminal:

cat /etc/passwd

If the user is created successfully, the last line of the result displayed after the above command is executed will use the information about the new user

Set password for user

Enter at the terminal:

passwd user name

Follow the system prompts to set the password for the user

delete user

Enter at the terminal:

gourpdel user group name

Create user group

Enter at the terminal:

groupadd user group name

Then you can view user group information as you can view user information, that is, enter the command:

cat /etc/group

If the user group is created successfully, the last line of the result displayed after the above command is executed will use the information about the new user group

Delete User Group

Enter the command at the terminal:

gourpdel user group name

Switch users

Enter command:

su user name

You can also enter the command to directly switch to the user's home directory, and enter the command:

su - User name

Exit the current user

Enter command:

exit