Regular Expressions 101

^start of line

Negated Character Class[^:\r\n]*

*matches any number of characters outside the set below:

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\ra carriage return (ASCII 13)

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

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\d{0,7}a digit, repeated between 0 and 7 times

Non-Capturing Group(?:\R+|$)

1st Alternative\R+

\R+a newline sequence, repeated at least once

2nd Alternative$

$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.

25 tokens

Regular Expression

^[^:\r\n]*:\d{0,7}(?:\R+|$)

New

abc2:12345678
ab50:1234567
clo:123456789