re = /rel=['"](?:shortcut )?icon['"] href=['"]([^?'"]+)[?'"]/
str = '<link rel="shortcut icon" href="https://cdn.sstatic.net/Sites/stackoverflow/Img/favicon.ico?v=ec617d715196">
<link rel="icon" href="https://www.ecotechie.io/wp-content/uploads/2019/05/cropped-EcoTechie-Logo-512x512-1-32x32.png" sizes="32x32" />
<link rel="icon" href="//ssl.gstatic.com/pagespeed/insights/ui/logo/favicon_48.png" sizes="48x48">
<link rel=\'shortcut icon\' href=\'https://cdn.sstatic.net/Sites/stackoverflow/Img/favicon.ico?v=ec617d715196\'>'
# 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