Regular Expressions 101

^start of line

Group 1(\w+\s+)+

+repeats the group contents below at least once:

\w+any word character, repeated at least once

\s+any whitespace character, repeated at least once

Negative Lookahead(?!h\S+p(s)?://)

hthe literal h (104₁₀ / 150₈ / 68₁₆) (case sensitive)

\S+any non-whitespace character, repeated at least once

pthe literal p (112₁₀ / 160₈ / 70₁₆) (case sensitive)

Group 2(s)?

?repeats the group contents below at most once:

sthe literal s (115₁₀ / 163₈ / 73₁₆) (case sensitive)

://the literal text ://

Group 3(.*)

.*any 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.

Search reference

Regular Expression

^(\w+\s+)+(?!h\S+p(s)?://)(.*)$

New

Domain   abcd[.]xyz
, but not 
Bad  URL  h[xx]ps://abcd[.]xyz
 or 
Evil URL h[xx]p://stu[.]abc