Linux Bash Arithmetic Expressions Question: Download Linux Bash Arithmetic Expressions PDF

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

a) $(())

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Which built-in command performs integer arithmetic in bash shell? a) let b) get c) set d) none of the mentioned	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