Regular Expressions 101

Pro

^start of line

Negative Lookahead(?!.*7474)

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

7474the literal text 7474

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

1221the literal text 1221

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

^(?!.*7474).*1221

New

7777 1221 4543
7777 1221 7474 4543
7474 4543 7777 1221
4543 7474 7777 1221