Command Lines

Question 1

What is a CLI?

Answer 1

Command-line Interface

a text-based user interface (UI) used to view and manage computer files

a program on your computer that allows you to create and delete files, run programs, and navigate through folders and files

On a Mac, it’s called Terminal, and on Windows, it’s Command Prompt

Question 2

What is a GUI?

Answer 2

Graphical User Interface

a type of user interface through which users interact with electronic devices via visual indicator representations

Question 3

command: man

Answer 3

an interface to the system reference manuals

Question 4

command: ls

Answer 4

list directory contents

list information about the file (the current directory by default)

Question 5

command: pwd

Answer 5

print file name of current working directory

Question 6

command: pwd

Answer 6

print file name of current working directory

tells you what directory you’re in

Question 7

command: touch

Answer 7

make a file

change file timestamps

update the access and modification times of each file to the current time

to get the timestamps, if you do ls -l in a directory, you will see a time for each file.
if you touch a file, the time gets updated to now

there are a lot of ways to create files, but touch is a really commonly used one, because it’s relatively simple. part of the functionality is that the file that does not exist is created empty

Question 8

command: mv

Answer 8

move (or rename) files

Question 9

command: rm

Answer 9

remove files or directories

Question 10

command: rm

Answer 10

remove files or directories

Question 11

command: cp

Answer 11

copy files and directories