Regular Expressions 101

Pro

1st Alternative(?:[^\d\s-]{2}-){3}\d{2}-\d{2}-[^\d\s-]{2}

Non-Capturing Group(?:[^\d\s-]{2}-){3}

{3}repeats the group contents below exactly 3 times:

Negated Character Class[^\d\s-]{2}

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

\da Unicode decimal digit

\sa Unicode whitespace character

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\d{2}a Unicode decimal digit, repeated exactly 2 times

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\d{2}a Unicode decimal digit, repeated exactly 2 times

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Negated Character Class[^\d\s-]{2}

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

\da Unicode decimal digit

\sa Unicode whitespace character

-the literal - (45₁₀ / 55₈ / 2D₁₆)

2nd Alternative(?<=:\s).+

Positive Lookbehind(?<=:\s)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\sa Unicode whitespace character

.+any Unicode character (except for line terminators), repeated at least once

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

(?:[^\d\s-]{2}-){3}\d{2}-\d{2}-[^\d\s-]{2}|(?<=:\s).+

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my mac is aa-bb-cc-33-44-SS
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