Regular expressions

You can find the full description of RegExp in Wikipedia. In this article we will provide you with the short cheat sheet the frequently used expressions

Directual peculiar feature. You should type * after the expression

rexExp cheat sheet




Matches any character


Matches the preceding pattern element one or more times.


Matches the preceding pattern element zero or one time.


Separates alternate possibilities, A|B = A or B


Matches the beginning of a line or string.


Matches the end of a line or string.

[ ]

Denotes a set of possible character matches. [ABC] = A or B or C


Escapes special characters

Frequently used Regular Expressions


regExp (you can copy-paste them right into Directual)

Check email format


Check particular email domain


Any digit number


Any latin character



.*hello|hi|good morning|good evening|salut.*

Useful service for composing a regular expression: