Command Line

Question 1

What is a CLI?

Answer 1

Command line interface - processes commands to a computer program in the form of lines of text

Question 2

What is a GUI?

Answer 2

Graphical user interface - a form of user interface that allows users to interact with electronic devices through graphical icons and audio indicator such as primary notation, instead of text-based user interfaces, typed command labels or text navigation

Question 3

Give at least one use case for each of the commands listed in this exercise.
man
cat
ls
pwd
echo
touch
mkdir
mv
rm
cp

Answer 3

man - is an interface to the on-line reference manuals
cat - concatenate files and print on the standard output
ls - list directory contents
pwd - print name of current/working directory
echo - display a line of text (console.log for terminal)
touch - change file accessed timestamps, creates empty file if argument does not exist
mkdir - makes directories
mv - move (rename) files
rm - remove files or directories
cp - copy files and directories

Question 4

What are the three virtues of a great programmer?

Answer 4

Laziness, impatience, and hubris