User Management for Linux Learning

Although we entered our account when logging on to Linux, the Linux host does not directly know your account name. He only knows the ID, the relationship between your ID and your account is in/etc/passwd.

 

Each login user has at least two IDs, one being the user ID and the other being the user group ID,

The ID information is mainly stored in/etc/passwd and/etc/group. Interested readers can view it by themselves.

 

Add and delete users:

Useradd

Useradd [-u uid] [-g gid] [-D main folder Directory] account name

Useradd Aviva

Add a password to a user

Passwd Aviva

In this way, the user is added.

 

 

Delete a user

Userdel-r Aviva

Delete with the user's main folder

 

 

Add a user group

Groupadd [-g gid] [-R] User Name

-G is followed by a specific GID,

-R: Create a system user group

Create a user group named group1

Groupadd group1

 

Delete a user group

Groupdel group1