Novice linux (3)

Cainiao-basic simple linux (3)-General Linux technology-Linux technology and application information. For details, refer to the following section. By goodls

Hello everyone. I am here again. Learn linux with everyone. If you often read the text I wrote, you have learned how to create basic linux directories, create files, and mount and uninstall CDs in linux.

Now, let's explain how to manage users.

Linux, as a multi-user and multi-task operating system, uses the permission ry mechanism of the user account. An independent user account is provided for each user in the system. Users use their own accounts and passwords to log on to the system. Therefore, the linux system can be conveniently managed by every user.

1 passwd file

All user accounts in Linux are saved in the "/etc/passwd" file, which is a text file and can be read by all users in the system.

2shadow File

Is a file that saves the user's password and information in linux.

3. Add a user

Adduser

Example: useradd lll

A new user named lll is added.

4 passwd

Add User Password

For example, passwd lll adds a password to the end.

5. delete a user

Userdel

Example: userdel lll

In this way, the user lll is deleted.

Well, we also learned how to create our own users in the linux system, as well as how to create directories and files. In linux, data is stored in directories.

This is a good idea for beginners. Let's have a good understanding of what we have explained above.

Next, we will learn more difficult linux User attributes and group management.