What are the linux switching user commands?

Linux switching user commands include su, sudo, su -l, login and su -s, etc. Detailed introduction: 1. The su command can switch to other user accounts and allow you to continue operating under this user account. When using the su command, you need to enter the user account and password you want to switch to; 2. The sudo command can allow ordinary The user executes commands as a super user. It is usually used when ordinary users need to execute commands that require administrator privileges. When using the sudo command, they need to enter their own password; 3. su -l command, etc.

Linux operating system is an open source operating system with multi-user features. Multiple users can log in and operate at the same time. In Linux, the command to switch users is very important. It allows users to switch to other users and perform different operations without exiting the current user.

The main commands for switching users in Linux are as follows:

1. su command: su command is the most Common switching user commands. It can switch to another user account and let you continue operations under this user account. When using the su command, you need to enter the user account and password you want to switch to. For example, to switch to the root user, you can enter the following command in the terminal:

```shell
su - root
```

This command will prompt you to enter the root username Password, after entering the correct password, you can execute the command under the root user.

2. sudo command: The sudo command allows ordinary users to execute commands as a super user. It is usually used when ordinary users need to execute commands that require administrator privileges. You need to enter your own password when using the sudo command. For example, to execute a command as root, you can enter the following command in the terminal:

```shell
sudo command
```

This command will prompt you for the current user Password. After entering the correct password, you can execute the command with the permissions of the root user.

3. su -l command: The -l option of the su command can switch to the specified user account and switch the environment variables to the environment variables of the specified user. Enter the following command in the terminal to switch users:

```shell
su -l username
```

where username is the user account to be switched to. This command will prompt for the password of the specified user. After entering the correct password, you can execute the command under that user.

4. login command: The login command is used to switch users and log in to the system again. When using the login command, you need to enter the user account and password you want to switch to. For example, enter the following command in the terminal to switch users:

```shell
login
```

This command will prompt you to enter the user account and password you want to switch to. After entering the correct account number and password, the system will log in as the user again.

5. su -s command: The -s option of the su command can switch to the specified user and specify a shell program as the default shell program after switching. Enter the following command in the terminal to switch users:

```shell
su -s shell_program username
```

where shell_program is the program name to be used as the default shell program after switching, username Is the user account to switch to. This command will prompt for the password of the specified user. After entering the correct password, you can execute the command under that user.

In summary, the commands for switching users in Linux mainly include su, sudo, su -l, login, su -s, etc. Through these commands, users can switch to other users and perform operations with different permissions without exiting the current user.

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