Explained User management in linux with practical examples

In this article we learn user management in linux that include how to create new user, how to set password for the new user, how to create custom home directory, how to create user without home directory, how to describe about the user, how to create custom shell for the new user, how to create custom primary group for the new user and how to set secondary group for the created new user.

Maintain user management is the most important task for an system administrator.

How to create new user in linux system

To create a new user account we need to execute ”useradd” command to the shell. After executing this command new use account will be created with its own home directory, its own shell and automatically create its own primary group.To add the new user we execute the below command.

#useradd test <here test is the username>

After execute the above command user is created but account will be locked. To unlock the user account we need to execute the “passwd” command. After execute the below command the use account will be unlock.

#passwd test

Describe /etc/passwd file in linux system with practical examples

Explained User management in linux with practical examples

How to create custom home directory for new user in linux system

When we are going to create new user its home directory is automatically created. To create the custom directory we use “-d” switch. First we need to create the the specified location in which user home directory is created and then we use “-d” switch to create custom directory.

Suppose our specified location is “/testuser/test” .we first create “/testuser/test” directory and to set it we use the below command.

#useradd –d /testuser/test test

How to create user without home directory

To create a user without home directory we use “-M” switch. We need to execute the below command.

#useradd –M test

How to describe about the new user

When we create to a new user for an organization we need to mention the description for the new user. To do this we use “-c” switch.

#useradd –c “user description” test

How to create custom shell for the new user

When we create a new user “/bin/bash” shell is automatically created. To create the custom shell we use “-s” switch to execute it.

#useradd –s /bin/ksh

How to create custom primary group

When a user is create its primary group is automatically created. To change it forcefully to a custom group we use “-g” switch.

#groupadd primary

#useradd –g primary test

How to add a user to a secondary group

To belong the test user in the secondary group we use “–G” switch.

#groupadd secondary

#useradd –G secondary test

Describe usermod operation in linux with practical examples

Please Donate To Bitcoin Address: [[address]]

Donation of [[value]] BTC Received. Thank You.

[[error]]

Explained User management in linux with practical examples