A shell is a program that executes other programs in response to text commands. There are two types:
Graphical user interface(GUI)
Command line interface(CLI)
A command-line interface is a computer terminal that performs processes by text prompts from users. Unlike the GUI where users send prompts by interactions with the screen using the mouse/ touchpad, the command-line employs the use of the keyboard. The command-line is accessed via a shell.
Advantages of the command-line
there’s more speed creating files.
you have more control over your hardware.
It can be used to search for files that are not available to the common user.
Downsides of the command-line
In comparison to the GUI, the command-line is less user friendly.
steeper learning curve associated with memorizing commands and complex syntax/arguments.
different commands used in different shells.
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