How to switch users in linux

Methods to switch users in Linux include: display the current user, use the "su -" command to switch to another user, use the "sudo" command to execute commands with root privileges, or log in directly as the root user.

How to switch Linux users

In Linux systems, switching users can be completed through the following steps:

1. Display the current user

Use the "whoami" command to display the current login username:

<code>$ whoami</code>

2. Switch to other users

Use the "su -" command to switch to another user:

<code>$ su - username</code>

where "username" is the target username to be switched to.

• If the target user is an ordinary user, you need to enter the password of the target user.
• If the target user is the super user (root), you need to enter the root password.

3. Use the sudo command

The sudo command allows ordinary users to execute specified commands with root privileges.

<code>$ sudo command</code>

However, ordinary users need to enter their own password to use sudo.

4. Log in with root privileges

Log in to the system directly with the root user:

<code>$ su</code>

This will enter the root user’s session.

Tip:

• Make sure you have permission to switch to the target user.
• Be cautious when switching to the root user, as any operation may have irreversible effects on the system.
• Always use a strong password to protect the security of your user accounts.

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