Regular Expressions 101

^start of line

Group 1((?:[0-9A-Fa-f]{2}(?:[:-]?)){7}(?:[0-9A-Fa-f]{2}))

Non-Capturing Group(?:[0-9A-Fa-f]{2}(?:[:-]?)){7}

{7}repeats the group contents below exactly 7 times:

Character Class[0-9A-Fa-f]{2}

{2}matches exactly 2 characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

A-Fone character from A (65₁₀) to F (70₁₀) (case sensitive)

a-fone character from a (97₁₀) to f (102₁₀) (case sensitive)

Non-Capturing Group(?:[:-]?)

Character Class[:-]?

?matches at most one character from the set below:

:the literal : (58₁₀ / 72₈ / 3A₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Non-Capturing Group(?:[0-9A-Fa-f]{2})

Character Class[0-9A-Fa-f]{2}

{2}matches exactly 2 characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

A-Fone character from A (65₁₀) to F (70₁₀) (case sensitive)

a-fone character from a (97₁₀) to f (102₁₀) (case sensitive)

$end of line

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.

Search reference

Regular Expression

^((?:[0-9A-Fa-f]{2}(?:[:-]?)){7}(?:[0-9A-Fa-f]{2}))$

New

00:13:a2:00:41:8b:93:7a
0013a200418b937a
AD:12:13:FC:14:EE:FF:FF
ad-12-13-fc-14-ee-ff-ad