re = /^([^0-9\n]*[0-9]){2}.*/m
str = 'a 1 b 2 c
1 b 2 c
a 1 b 2
a 1 b 2 c 3 d 4 e
a 12
12 a b c
a 1 b
1
a b 2'
# 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