Linux Bash Arithmetic Expressions Question:

If a and b are 2 variables then the meaning of a<<=b is:
a) b = a << b
b) a = a << b
c) b = b << a
d) a = a << b

Linux Bash Arithmetic Expressions Interview Question
Linux Bash Arithmetic Expressions Interview Question

Answer:

b) a = a << b


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Which expression use the value of the enclosed arithmetic expression?
a) $(())
b) $()
c) ${}
d) $[]		Which one of the following is bit-wise 'exclusive or' operator?
a) ^=
b) |=
c) !=
d) none of the mentioned