Regular Expressions 101

Explanation

Pro

^start of line

Group 1(\d+\s*)

\d+a Unicode decimal digit, repeated at least once

\s*a Unicode whitespace character, repeated any number of times

Group 2(:\d{2}[A-Za-z]?:.*)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

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

Character Class[A-Za-z]?

?matches at most one character 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)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

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

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*)(:\d{2}[A-Za-z]?:.*)

New

ID        Information

1         :20:Test1  :25:test2:28C:test3

\n$0

ID        Information

1         :20:Test1  :25:test2:28C:test3