Regular Expressions 101

^start of line

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)

Positive Lookahead(?=([:-]))

Group 1([:-])

Character Class[:-]

:the literal : (58₁₀ / 72₈ / 3A₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Non-Capturing Group(?:\1[0-9A-Fa-f]{2}){5}

{5}repeats the group contents below exactly 5 times:

\1the text saved by group 1

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}(?=([:-]))(?:\1[0-9A-Fa-f]{2}){5}$

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