Topic 2: Finding your way on a linux system

Question 1

What is the echo command used for?

Answer 1

to write to the standard output

Question 2

In quoting, what purpose do double quotes serve?

Answer 2

They preserve the literal value of most characters contained within the quotes except variables with $, the single quotes, and \ the escape character

Question 3

In quoting, what purpose do single quotes serve?

Answer 3

The preserve the value of every character within – including the escape character \

Question 4

In quoting, what purpose does the escape \ character serve?

Answer 4

it preserves the value of the next following character with the exception of the command newline

Question 5

What is the PATH environment variable used for?

Answer 5

to define which directories the interpreter looks in for executables

Question 6

What does a hidden file look like?

Answer 6

It has a slash at the beginning, then a period: /.hidden.txt

Question 7

what is a relative path?

Answer 7

they do not start with a slash ( / ) and are only relative to current location

Question 8

What is an absolute path and which command always prints it?

Answer 8

any path that starts with a slash ( / ) and command pwd