Question

Which option is used to produce multi columnar output in diff command?

(a) -y

(b) -v

(c) -s

(d) -e

I had been asked this question by my college director while I was bunking the class.

My question comes from Comparing Files:comm, cmp and diff Command topic in division Handling Ordinary Files of Unix

Answer 1

Right option is (a) -y

Easiest explanation: -y option when used with diff command produces output in multiple columns. For example,