Regular Expressions 101

Pro

^start of line

Negative Lookahead(?!.*\b(Amazon|eBay|AliBaba)\b)

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

\ban ASCII word boundary

Group 1(Amazon|eBay|AliBaba)

1st AlternativeAmazon

Amazonthe literal text Amazon (case sensitive)

2nd AlternativeeBay

eBaythe literal text eBay (case sensitive)

3rd AlternativeAliBaba

AliBabathe literal text AliBaba (case sensitive)

\ban ASCII word boundary

.*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.

25 tokens

Regular Expression

^(?!.*\b(Amazon|eBay|AliBaba)\b).*$

New

some vendor text before Amazon some after 
some vendor text before eBay some after
some vendor text before AliBaba some after 
some vendor text before Apple some after

Extraction

some vendor text before Amazon some after 
some vendor text before eBay some after
some vendor text before AliBaba some after 
some vendor text before Apple some after