in this repository we are expected to be able to explain to anyone, without the help of Google: General
What does RTFM mean?
What is a Shebang
What is the Shell
What is the shell
What is the difference between a terminal and a shell
What is the shell prompt
How to use the history (the basics)
Navigation
What do the commands or built-ins cd, pwd, ls do
How to navigate the filesystem
What are the . and .. directories
What is the working directory, how to print it and how to change it
What is the root directory
What is the home directory, and how to go there
What is the difference between the root directory and the home directory of the user root
What are the characteristics of hidden files and how to list them
What does the command cd - do