re = /X.*/m
str = 'A-B-1_u
A-B-2_u
A-B-3_u
A-B-4_u
A-B-5_u
X-Y1
X-Y1'
# 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