Shell Script

Interview Questions on Shell Script

11. What is the use unset?

use unset
$ unset PI

12. What happens if we execute ‘echo $$’; ?

Prints procees id of current shell.

13. What is the use of $0?

The filename of the current script.

14. What is the use of $#?

The number of arguments supplied to a script.

15. What is the use of $*?

Prints all arguments.

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