How many types of linux users are there?

There are three types of users in the Linux system, namely: 1. root (super administrator), with a UID of 0 and great authority; 2. System user, with a UID ranging from "1 to 499" ;3. For ordinary users, the UID range is "500~65534".

#The operating environment of this tutorial: linux5.9.8 system, Dell G3 computer.

Linux is a multi-user and multi-tasking operating system. In other words, the Linux system supports multiple users to log in at the same time, and different users can perform different tasks without affecting each other.

Different users have different permissions, and each user can complete different tasks within the scope of permissions. It is through the division and management of permissions that Linux realizes a multi-user and multi-task operating mechanism. .

So how many types of Linux users are there?

Users in the Linux system are divided into three categories:

The first category: root (super administrator), UID is 0. This user has great permissions and can be ignored directly. Many restrictions, including read, write and execute permissions.

The second category: system user, UID is 1~499. Generally, you will not be logged in.

The third category: ordinary users, the UID range is generally 500~65534. The permissions of such users will be limited by basic permissions and will also be restricted by administrators. However, please note that the special account nobody has a UID of 65534. This user's permissions will be further restricted and is generally used to implement guest accounts.

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