Question

A shell script stopped running when we change its name. Why?

(a) location of the file changed

(b) we can’t change the name of the script

(c) $0 was used in the script

(d) many possible reasons

I have been asked this question in an internship interview.

Query is from Shell Programming using Various Commands in division Essential Shell Programming of Unix

Answer 1

The correct answer is (c) $0 was used in the script

For explanation I would say: A shell script will stop running when we change its name if we’d used the positional parameter $0 in it as $0 contains the name of the script file.