Regular Expressions 101

Explanation
Pro

Group 1((?:\d{6}?)([A-Z\d]{3})?(?:[\^r\ ]+)(([A-Z\d]{6}|[A-Z\d]{5} |[A-Z\d]{4} ))?)

Non-Capturing Group(?:\d{6}?)

\d{6}?a digit, repeated exactly 6 times

Group 2([A-Z\d]{3})?

?repeats the group contents below at most once:

Character Class[A-Z\d]{3}

{3}matches exactly 3 characters from the set below:

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

\da digit

Non-Capturing Group(?:[\^r\ ]+)

Character Class[\^r\ ]+

+matches at least one character from the set below:

\^the literal ^ (94₁₀ / 136₈ / 5E₁₆)

rthe literal r (114₁₀ / 162₈ / 72₁₆) (case sensitive)

\ the literal (32₁₀ / 40₈ / 20₁₆)

Group 3(([A-Z\d]{6}|[A-Z\d]{5} |[A-Z\d]{4} ))?

?repeats the group contents below at most once:

Group 4([A-Z\d]{6}|[A-Z\d]{5} |[A-Z\d]{4} )

1st Alternative[A-Z\d]{6}

Character Class[A-Z\d]{6}

{6}matches exactly 6 characters from the set below:

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

\da digit

2nd Alternative[A-Z\d]{5}

Character Class[A-Z\d]{5}

{5}matches exactly 5 characters from the set below:

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

\da digit

the literal (32₁₀ / 40₈ / 20₁₆)

3rd Alternative[A-Z\d]{4}

Character Class[A-Z\d]{4}

{4}matches exactly 4 characters from the set below:

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

\da digit

the literal text

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{6}?)([A-Z\d]{3})?(?:[\^r\ ]+)(([A-Z\d]{6}|[A-Z\d]{5} |[A-Z\d]{4}  ))?)

New

FPCN54 CWNT 080810^r^r EXTENDED FORE
ASUS42 KMHX 080425^r^r RWRMHX^r^r WEAT
RXUS30 KWNO 081300^r^r XOBUS ^r^r <?xm

FPCN54 CWNT 080810^r^r EXTENDED FORE
ASUS42 KMHX 080425^r^r RWRMHX^r^r WEAT
RXUS30 KWNO 081300^r^r XOBUS ^r^r <?xm