Question

Which of the following command will list all the hidden filenames in our directory having at least three characters after the dot (.)?

(a) ls

(b) ls -a

(c) ls  .???*

(d) ls *

This question was posed to me during an interview.

I'd like to ask this question from Pattern Matching, Escaping and Quoting topic in portion The Shell of Unix

Answer 1

Correct choice is (c) ls  .???*

Best explanation: The * doesn’t match all files beginning with a (.) dot. So if we need to lists all the hidden filenames in our directory having at least three characters after the dot (.) we can use the following command,