This is simplified from my last submission.

Grabs sentences including terms like: e.g. z.b. Figs.These get caught in 1st capturing group. Problem: how to only accept matching sentences which contain pattern \b\d+[a-z]{0,2}\b?

Alow alphanumeric characters and spaces

Matches all valid IP addresses from 0.0.0.0 to 255.255.255.255

This regex will match any Youtube video ID thrown at it and return one capturing group containing the ID.

Returns key/value pair of a url. Also works with google fonts which has additional information

Parse an English date following the "dd mmmm yyyy" format.

A string with only numbers in

The following regular expression matches only letter a-z A-Z numbers 0-9 and a blank space for a given string.

This regex should extract the subdomain, if any, or the domain, if no subdomain is used, from an arbitrary URL

sdfs sdfs FLBREV00022230 dsfsdfs sdfsf FLBREV00022234 In this case is false

Use this regex to select all characters up to the "" bracket. It works across multiple lines. You can get an email list with only the IDs. This is the pattern it matches: Alpha Person Step 1 (.*) [$ Step 2 [$.$] (.*) gives you aperson@whatever.org...

Regex used in Splunk to extract fields from Mikrotik FW. NOTES: Mikrotik must be configured to use "BSD Syslog" format FW rules must add, as log prefix, the action: drop accep...

This is a JavaScript port of the URL regex from http://stackoverflow.com/a/190405/384062 that includes a bug fix and some optimization. Mathias Bynens's Regenerate was used to convert unicode escapes. Bug fix: Eliminated stray | falsely allowing querystring to contain | ...