Regular Expressions 101

Pro

Group 1(\b(\w+@.*.com)\b.*)

\ban ASCII word boundary

Group 2(\w+@.*.com)

\w+any word character, repeated at least once

@the literal @ (64₁₀ / 100₈ / 40₁₆)

.*any character (except for line terminators), repeated any number of times

.any character (except for line terminators)

comthe literal text com (case sensitive)

\ban ASCII word boundary

.*any character (except for line terminators), repeated any number of times

\2the text saved by group 2

\ban ASCII word boundary

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

25 tokens

Regular Expression

(\b(\w+@.*.com)\b.*)\2\b

999,222,999
mail,mail,nail,
mail@sca.com,mail@sca.com

site.com: mail@site.com,nail@site.com,mail@site.com
nite.com: info@nite.com,nail@site.com,nail@site.com

Extraction

999,222,999
mail,mail,nail,
mail@sca.com,mail@sca.com

site.com: mail@site.com,nail@site.com,mail@site.com
nite.com: info@nite.com,nail@site.com,nail@site.com