Commands to know: cat

Question 1

-b

Answer 1

numbers all non-blank lines in output, starting at 1

Question 2

-e

Answer 2

(end-of-line) Displays $ at the end of each line

Question 3

-n

Answer 3

numbers ALL output lines (including blank) starting at 1

Question 4

-s

Answer 4

(squeeze) replaces sequeences of empty lines by a single empty lise

Question 5

-T

Answer 5

displays tab characters as ^I

Question 6

-v

Answer 6

makes control characters visible

Question 7

-A

Answer 7

same as -vET