Question

Which of the following flag will be used for interactive substitution?

(a) g

(b) G

(c) gc

(d) cg

The question was asked by my school teacher while I was bunking the class.

I want to ask this question from Commands for Searching, Replacing and Substituting in Vi Editor in section The Vi Editor of Unix

Answer 1

Correct option is (c) gc

The best I can explain: For selectively replacing a string we can use ‘gc’ flag. Here ‘c’ is used as a confirmatory parameter at the end. Each line is selected in turn and then waits for our response, whether to replace the selected pattern or not. A ‘y’ performs the substitution and any other response doesn’t.