Creating,logging and Deleting User in Unix/Linux

To create a new user first we have to login as root user (or) with # prompt

# system administrator prompt
$ user working prompt
Login:root 

Password:

To create a new user : useradd is used to create a new user.                                   
                                     syntax: #useradd <username>

Ex: #useradd practice

To create a new password : passwd is used to create a new password
                                              syntax: #passwd <username>

Ex: #passwd practice
                                           

Login through created user 
goto terminal windows f1-f6 and login 

Login :<username>
Password :

Ex: Login : practice
       Password :
                                                                      

                                 

To display current user login name 
logname is used to display current user login name

Ex: $logname
                                             

                               

To delete a user
We must have to login as root user to deleting user and the user which we want to delete should not be login in any terminal.

To delete a user : userdel is used to to delete a user.
                             syntax: #userdel -r <username>

Ex: #userdel -r <username>