Regular Expressions 101

^start of line

Negative Lookahead(?!deal_string)

deal_stringthe literal text deal_string (case sensitive)

Character Class[a-m]

a-mone character from a (97₁₀) to m (109₁₀) (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.

Search reference

Regular Expression

^(?!deal_string)[a-m].*$

New

assets/filename.ext           -> pass
deal_string/filename.ext      -> fail
deal_string.ext               -> fail
deal_string_1.ext             -> fail
deal_draft.txt                -> pass
assets_deal_string.txt        -> pass
bombay.txt                    -> pass
zombie.srt                    -> fail
some_deal_string.txt          -> fail
zobie_special_string.txt      -> fail