Linux Bash Arithmetic Expressions Question:
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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

Answer:

b) a = a << b

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Which expression use the value of the enclosed arithmetic expression?
a) $(())
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c) ${}
d) $[]
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a) ^=
b) |=
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