Learn the important instructions for adding users in Linux

In Linux systems, adding users is a common operation. Mastering the key commands for adding users is of great significance for managing system users. This article will introduce the key commands for adding users in the Linux system and provide specific code examples to help readers master this operation step.

1. useradd command

useradd command is the key command to add a new user in the Linux system. Its syntax format is:

useradd [选项] 用户名

The following is A specific code example:

sudo useradd -m jerry

The above command will create a new user named jerry and create the home directory of user jerry in the /home directory.

2. passwd command

After adding a user, you need to set a password for it. You can use the passwd command to complete this step. The syntax format is:

passwd 用户名

The following is a specific code example:

sudo passwd jerry

After running this command, the system will prompt you to enter the new password of user jerry and confirm it.

3. usermod command

usermod command can be used to modify the attributes of a user account, such as changing the user's home directory, logging in to the Shell, etc. The syntax format is:

usermod [选项] 用户名

The following is a specific code example:

sudo usermod -s /bin/bash jerry

The above command sets the login shell of user jerry to bash.

4. userdel command

If you need to delete a user, you can use the userdel command. The syntax format is:

userdel [选项] 用户名

The following is a specific Code example:

sudo userdel -r jerry

The above command will delete the user named jerry and delete his home directory at the same time.

Through the above key commands and code examples, readers can master the steps of adding users in the Linux system, and also understand how to set passwords for users, modify user attributes, and delete users. These operations are a very basic and important part of Linux system management. I hope readers can become more proficient in user management operations through this article.

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