Command Line Crash Course
Title Text
What's a Terminal?
a contact on an electrical device (such as a battery) at which electric current enters or leaves
electronic equipment consisting of a device providing access to a computer; has a keyboard and display
What's a Terminal?
So What's a Shell?
In computing, a shell is a user interface for access to an operating system's services.
In general, operating system shells use either a command-line interface (CLI) or graphical user interface (GUI), depending on a computer's role and particular operation.
It is named a shell because it is the outermost layer around the operating system.
So What's a Shell?
Powershell, Bash, ZSH, the MINGW git shell for Windows, and the Win32 shell you use when you open CMD.exe in windows are all shells you might have encountered.
Great wiki about different shells:
en.wikipedia.org/wiki/Comparison_of_command_shells
We're going to be focusing mostly on Bash and ZSH
Words
Terminal
Shell
Prompt
Command
Flag
Path
Permissions
Dotfiles
Prompt Statement (PS1, PS2)
CLI