Regular Expressions 101

6 pairs of hexadecimal characters separated by either 5 dashes, or 5 colons, or no separators at all. Mixture of separators not allowed.

uuid, Windows Accounts (NetBios), etc.

identify service accounts by common nomenclature types

Get all URLs: www.lapagina.com pagina.com http://www.lapagina.com http://pagina.com https://www.lapagina.es

Find all telephones in text: 968123123 968 123 123 968.123.123 968 12 12 12

Full regex for failed sendings

extract the package name and version name from the apt list --installed command

A solution for capture set/unset/catch a value of param query of URLs. Here is a example code that applies this pattern in JS, but JS doesn't have support to lookbehind.

A more thorough UK postcode validator tested against all UK postcodes on a regular basis, but excluding the special GIRO postcode case out of personal preference. Additionally has capture groups for the In-code and Out-code sections. Requires case insensitive matching.

I customized the todo.txt (see todotxt.com) normal formatting. Here is how mine works: Priority Due_Date Project#progressive_number Start_date^repeat_every Job Contexts Tags Here is an example: (A) 2016-05-24 +projectA#4 $2015-11-30^2M My todo job @context_foo @context_bar &WAIT &ANOTHER_TAG I wante...

If you need to rename it

handles quotes, non-quotes, angle bracket, parans, and trips extra white spaces