parser.rb

#!/usr/bin/env ruby
 
REGEX = %r{TRP.*(\d{2}\/\d{2}\/\d{4} \d{2}:\d{2}:\d{2}).*(\d{2}\/\d{2}\/\d{4} \d{2}:\d{2}:\d{2}).*(\d{2}:\d{2}:\d{2}).*(\d{4}\.\d{2}\.\d{2}\.\d{2}\.\d{2}\.\d{2})}

abort "You must enter file paths via CLI" unless ARGV.length > 0

ARGV.each do |file_path|
  File.open(file_path, "rb") do |f|
    results = f.read.scan(REGEX)
    if results.length != 1
      puts "File #{f.path} contained #{results.length} instances of pattern}"
      next
    end

    puts results[0][2]
  end
end