Linux File-related Permissions

For details about permissions related to Linux Files-general Linux technology-Linux technology and application information, see the following. When we use the LL or LA command to view information about the current directory, we can always see such information prompts at the beginning;

-Drrr -- o ---

These are related user service permissions for this file or folder.

Let's analyze it.

10 in total.

We used this method for grouping.

-Drr -- o --

Of course, the user's permissions are limited to the permissions of other users in the group where the user is located.

Command Format: chmod [Option] Directory

Option Description: u: permission of the current user. g: permission of the Working group where the current user is located. o: Permission of other users.

Let's take an example:

We set the current user permission of the current bin directory to r (read) w (write) o (execute ). The current group is the same as the current user. Other users can only be blank

Chmod u = rwo, g = rwo, o = ''bin

At the same time. We can also use the + and-numbers to grant permissions.