QUESTION 1

In the command

Command1 || Command2

Command1 is executed, if it returns a status of zero, then command 2 is executed; otherwise, command2 is skipped.

True

False

2 points

QUESTION 2

Which statement best describes when Variable Subsitution (expansion) can occur?

	a.	Inside of single quotes
	b.	Inside of double quotes
	c.	Inside of backquotes
	d.	B & C
	e.	A & B & C

4 points

QUESTION 3

Note, If field 7 of the password file is empty, it is assumed to be /bin/sh. Which of the following commands count the number of users whose login shell is /bin/sh? (Remember the rule from above.)

	a.	( grep ':$' /etc/passwd; grep ':/bin/sh$' /etc/passwd) | wc -l
	b.	sed 's,:$,:/bin/sh,' /etc/passwd | grep ':/bin/sh$' | wc -l
	c.	egrep -ce ':$|:/bin/sh$' /etc/passwd
	d.	A & B & C
	e.	A & B