Regular Expressions 101

Explanation
Pro

^start of line

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

Group 1([A-Z]{2}[0-9]{3}_[0-9]{3})

Character Class[A-Z]{2}

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

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

Character Class[0-9]{3}

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

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

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

Character Class[0-9]{3}

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

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

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

$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

^.*([A-Z]{2}[0-9]{3}_[0-9]{3}).*$

New

PD380_003 %LINK-3-UPDOWN
NM380_005 %BGP-5-NBR_RESET
NM380_005 %BGP-5-NBR_RESET
DO NOT TICKET LO380_004 %SYS-5-CONFIG_I Config

PD380_003 %LINK-3-UPDOWN
NM380_005 %BGP-5-NBR_RESET
NM380_005 %BGP-5-NBR_RESET
DO NOT TICKET LO380_004 %SYS-5-CONFIG_I Config