re = /^[A-HJ-NPR-Z\d]{8}[\dX][A-HJ-NPR-Z\d]{8}$/m
str = '1FUYDMDB2YPF87097
1FAHP26W49G252740
WP0CA29863U153381
2FTRX07W53C371582
1FAHP26W49G252740
WP0CA29863U153381
2FTRX07W53C371582
'
# Print the match result
str.scan(re) do |match|
puts match.to_s
end
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Ruby, please visit: http://ruby-doc.org/core-2.2.0/Regexp.html