Special Variables

Question 1

What does $* refer to?

Answer 1

All the arguments typed on the command line. If you use this in echo it will remove quotes.

Question 2

What does $# refer to?

Answer 2

The number of arguments or parameters that were typed on the command line.

Question 3

What does $? refer to?

Answer 3

Echo this command to see the exit status of the previous command.

Question 4

What does “$@” refer to?

Answer 4

All the arguments on the command line, but interprets quotes if you use in echo.