Valid Phone Numbers

05.04.2023

Given a text file file.txt that contains a list of phone numbers (one per line), write a one-liner bash script to print all valid phone numbers.You may assume that a valid phone number must appear in one of the following two formats: (xxx) xxx-xxxx or xxx-xxx-xxxx. (x means a digit)You may also assume each line in the text file must not contain leading or trailing white spaces.

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