Regular Expressions 101

^start of line

Character Class[A-Za-z0-9]{10}

{10}matches exactly 10 characters from the set below:

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

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

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

CTLthe literal text CTL (case sensitive)

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

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

Character Class[0-9]{7}

{7}matches exactly 7 characters from the set below:

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

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

x02the literal text x02 (case sensitive)

Group 1([0-9]{2})

Character Class[0-9]{2}

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

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

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

x01the literal text x01 (case sensitive)

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

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25 tokens

Regular Expression

^[A-Za-z0-9]{10}.*CTL.*2[0-9]{7}\\x02([0-9]{2})\\x01

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