How can I get the current user's username in Bash?

Question

I am writing a program in Bash that needs to get the user\'s username.

I have heard of a thing called whoami, but I have no idea what it does or how to use it.

W

Answer 1

In Solaris OS I used this command:

$ who am i     # Remember to use it with space.

On Linux- Someone already answered this in comments.

$ whoami       # Without space