Regular Expressions 101

^start of line

Negative Lookahead(?!google\.com\.sg)

googlethe literal text google (case sensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

comthe literal text com (case sensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

sgthe literal text sg (case sensitive)

Group url(?<url>[^\n]+)

Negated Character Class[^\n]+

+matches at least one character outside the set below:

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

Non-Capturing Group(?:\n|)

1st Alternative\n

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

2nd Alternative — matches an empty string

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

^(?!google\.com\.sg)(?<url>[^\n]+)(?:\n|)

New

google.com
google.com.sg
facebook.com
splunk.com
answers.splunk.com
idontknowanyurlsanymore.ru
iamahorseandilikeit.horse.me
factor.io