Chapter 20

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1.	What does the ? designate?
2.	What line must all shell scripts end with?
3.	What would you type in to invoke a script named myscript.sh?
4.	What is a variable?
5.	What is a UDV?
6.	What does the echo command do?
7.	What does fi do?

Answers

1.	A single character wildcard.
2.	exit 0
3.	bash myscript.sh
4.	A name designating an address in memory to hold data.
5.	A user-defined variable.
6.	Displays to the screen
7.	Finishes an if statement

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