Regular Expressions 101

^start of line

Non-Capturing Group(?:(?!nicht|NICHT).)*

*repeats the group contents below any number of times:

Negative Lookahead(?!nicht|NICHT)

1st Alternativenicht

nichtthe literal text nicht (case sensitive)

2nd AlternativeNICHT

NICHTthe literal text NICHT (case sensitive)

.any character (except for line terminators)

\d+a digit, repeated at least once

.any character (except for line terminators)

jpgthe literal text jpg (case sensitive)

$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

^(?:(?!nicht|NICHT).)*\d+.jpg$

New

asdhoho123.jpg
asdhihi123.jpg
asdhede123.jpg
asdhaha123.jpg
asdhede123.jpg
file001.jpg
fileNICHT01.jpg
file002.jpg
filenicht02.jpg
wurst012.jpg

asdhoho123.jpg
asdhihi123.jpg
asdhede123.jpg
asdhaha123.jpg
asdhede123.jpg
file001.jpg
fileNICHT01.jpg
file002.jpg
filenicht02.jpg
wurst012.jpg