Question: Write a regular expression that selects lines containing a social security number (either in pure nine digit form, dddddddd, or broken up with hyphens in

Write a regular expression that selects lines containing a social security number (either in pure nine digit form, dddddddd, or broken up with hyphens in the standard way: ddd-dd-dddd) For this exercise you must surround your solution with double quotes. in linux thanks

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