User Management Commands in Linux /****

 

User Management in Linux

 

A user is an entity, in a Linux operating system, that can manipulate files and perform several other operations. Each user is assigned an ID that is unique for each user in theoperating system. In this post, we will learn about users and commands which are used to get information about the users. After installation of the operating system, the ID 0 is assigned to the root user and the IDs 1 to 999 (both inclusive) are assigned to the system users and hence the ids for local user begins from 1000 onward.
In a single directory, we can create 60,000 users. 

 

User Management Command

User management is nothing but adding, deleting the users and assigning the passwords for the users in Linux. The same follows with groups. The important thing is this command needs root privilege for accessing other users or groups. Only the same user process can be done without the privilege.

Changing user’ s home directory

To change the user’ s default home directory to a different location, use the following User management command.

Syntax

user mod --home [new home directory path] [username]

Example

[root@linuxhelp ~]# usermod --home /home/user1/Desktop/

Disabling user by locking password

The user account can be disabled by locking the user’ s password.

Syntax

user mod --lock [username]

Example

[root@linuxhelp ~]# usermod --lock user1

The options -L or --lock can be used to lock the user’ s password.

Unlocking user password

To unlock a user password, use the following User management command.

Syntax

usermod --unlock [username]

Example

[root@linuxhelp ~]# usermod --unlock user1