Regular Expressions 101

^start of line

Positive Lookahead(?=.*abc)

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

abcthe literal text abc (case sensitive)

Positive Lookahead(?=.*clean)

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

cleanthe literal text clean (case sensitive)

.*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

^(?=.*abc)(?=.*clean).*$

New

abc_clean.csv
abc_other_clean.csv
abc_something_clean.csv
abc_def.csv
def_clean.csv