Linux OS Shell Question:
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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

Linux Shell Interview Question
Linux Shell Interview Question

Answer:

c) 2

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To redefine a variable, it can be removed from the list of variables by using the command:
a) unset
b) delete
c) remove
d) clear		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