Regular Expressions 101

Explanation

Pro

1st Alternative#.*

#the literal # (35₁₀ / 43₈ / 23₁₆)

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

2nd Alternative([\d_]*[A-Za-z]\w*)

Group 1([\d_]*[A-Za-z]\w*)

Character Class[\d_]*

*matches any number of characters from the set below:

\da Unicode decimal digit

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

Character Class[A-Za-z]

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

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

\w*a Unicode word character, 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_]*[A-Za-z]\w*)

New

localhost,127.0.0.1
8.8.8.8;web
web2 # Comments
192.168.0.1,fw

localhost,127.0.0.1
8.8.8.8;web
web2 # Comments
192.168.0.1,fw