Matches any number between 0 and 10 (inclusive) with 0 or 1 decimal places. Note that .5 will NOT be matched but 0.5 will. Also 10.X will not be matched, but 10 will.

Matches numbers that are likely to by financial amount. Does not consider the type of currency.

strip parentheses enclosed text with no keywords - handles nested parentheses - if using brackets/braces normalize string to parentheses then use the regex

Extract from {"city":{"id":1217734,"name":"Boysun","findname":"BOYSUN","country":"UZ","coord":{"lon":67.198608,"lat":38.206108},"zoom":8,"langs":[{"link":"http:\/\/en.wikipedia.org\/wiki\/Boysun"},{"ru":"Бойсун"}]},"time":1394871628,"main":{"temp":274.74,"temp_min":274.74,"temp_max":274.74,"pressure...

Searches for dotted decimal IPv4 Adresses and saves the numbers in match groups.

How to match the first line of a xml document

Gets the parameters (how many you want) from a url and organize into groups

Matches id, timecode and text for multiple subtitles. Make sure the source ends with a blank line to capture the last subtitle.

Simplest form to match all the episode numbering versions I could remember that don't use incremental numberign without seasons.

More than three words repeated in 3.

Checks if a expiry date is: mm/yy. You still have to check if it is a valid expiry date timewise.

This pulls out all the fields in a log4j field. Suitable for use in a Logstash Grok pattern or similar