Question

The string to be worked upon is placed on the left of the colon when using expr string handling function.

(a) True

(b) False

I got this question in an international level competition.

The above asked question is from Case and Expr Command topic in portion Essential Shell Programming of Unix

Answer 1

Correct option is (a) True

Explanation: For evaluating strings expr uses two expressions separated by a colon. The string to be worked upon is placed on the left of the colon while a regular expression is placed on its right.