Linux Bash Arithmetic Expressions Question: Which one of the following is not a valid operator in bash shell? a) || b) ~ c) =<< d) -= Linux Bash Arithmetic Expressions Interview QuestionAnswer: c) =<< Previous QuestionNext QuestionWhich one of the following is bit-wise 'exclusive or' operator? a) ^= b) |= c) != d) none of the mentionedWhat is the output of this program? If: 1) #!/bin/bash 2) a=2 3) b=4 4) let c=a**b 5) echo $c 6) exit 0 Options: a) 8 b) 16 c) 32 d) none of the mentioned