Test a given string for phone number variations and extract th parts.

With this pattern possible select decimal that cantain comma or space

Start with two letters and followed by any number of Integers

regex for inline substitution w/ sed

When looking for day, Sunday should not be matched.

Parses date-time duration strings +-1y2M3d4h5m6s, where 'm' is the dafault. Like this, where {} contains list of capturing groups: 21 - parsed as {,,,,21,} 2y2s - parsed as {2,,,,,2}

should start with letter follow by letters and numbers and (-) - zero or more can't start or finish with (-) can't have two or more consecutive (-) char

This version matches any sentence that sounds like yelling even it doesnt end with ? or !

Bob answers 'Whoa, chill out!' if you yell at him. You can use this regex to match regexes like "WHAT THE HELL WERE YOU THINKING?"

Match a not-empty string. A string with only spaces or no characters is an empty-string. When match something, mathc all the string with the exception of the eventually space at the and