Linux Introduction To Users
This tutorial will tell you how to identify a system's user account with commands like who, who am i, etc.
If more than one person use a single system, then everyone may have their own user account. Here, it will be helpful to know the user account details.
It also tells how to create a second user account and run program on that with the help of su and sudo command.
It tells you about the system's username.
Look at the above snapshot, 'sssit' is our system's username.
The who command gives the information about the users logged on to the system.
who am i
This command displays the information about the current user only.
Look at the above snapshot, in our system current logged in user is sssit.
This command tells about the users who are logged in and what are they doing.
This command tells about your user id, primary group id, and a list of groups that belongs to you.