Regular Expressions 101

Pro

Group 1(02 A1 )

02 A1 the literal text 02 A1 (case insensitive)

Group 2([0-9A-Z \n]{18,22})

Character Class[0-9A-Z \n]{18,22}

{18,22}matches between 18 and 22 characters from the set below:

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

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

the literal (32₁₀ / 40₈ / 20₁₆)

\na line-feed (newline) character (ASCII 10)

Group 3( 03)

03the literal text 03

Global pattern flags

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

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

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

(02 A1 )([0-9A-Z \n]{18,22})( 03)

New

02 A1 71 F0 FF FF 00
 94 00 03