Command line interface or terminal - Introduction
When working in the command line, at the beginning of every line you will see the prompt.
We are going to discuss ubuntu@ip-172-31-29-215:~$. It's built from six elements:
• your user name (e.g. ubuntu)
• your server name (e.g. ip-172-31-29-215)
• folder name (e.g. ~ which means your user's home directory) •$
Your commands go after the $ sign.
ABOUT THE COMMAND LINE COMMANDS
In the command line, you interact with your server exclusively by typing commands. You don't have a cursor or a graphical user interface.
A few commonalities of bash commands:
They are usually created to do one simple thing and do that one thing very well.
The name of the commands are almost always the short form of the things
they do. (e.g. pwd stands for "print working directory".)
Their original function can be modified with options.