Linux OS Shell Question: Download Linux Shell PDF

What is the output of the following program?

[ -n $HOME ]
echo $?
[ -z $HOME ]
echo $?
a) 0
1
b) 1
0
c) 0
0
d) 1
1

a) 0
1

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The statement z = 'expr 5 / 2′ would store which of the following values in z? a) 0 b) 1 c) 2 d) 2.5 e) 3	What is the output of the following program? x = 3; y = 5; z = 10; if [( $x -eq 3 ) -a ( $y -eq 5 -o $z -eq 10 )] then echo $x else echo $y fi a) 1 b) 3 c) 5 d) Error