re = /href=[^>]+\.pdf"/
str = '<li>Your browser may be missing a required plug-in contained in <a href="http://get.adobe.com/reader/">Adobe Acrobat Reader</a>. Please reload this page after installing the missing component.<br />If this error persists, you can also save a copy of <a href="http://www.police.vt.edu/VTPD_v2.1/crime_stats/crime_logs/data/VT_2011-01_Crime_Log.pdf">'
# 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