Question

awk uses __ and __ as comparison operators.

(a) $$, ^^

(b) ||, &&

(c) %%, ##

(d) ||, @@

I have been asked this question during an interview.

My question is from Various Operations using Awk Command topic in division Awk – An Advanced Filter & Perl – The Master Manipulator of Unix

Answer 1

Correct choice is (b) ||, &&

To explain I would say: awk uses the && and | | as logical operators in the same sense as used by the C. The following command looks  for two strings in third field only using || operator.