Question

I’m looking for a regular expression that will match all strings EXCEPT those that contain a certain string within. Can someone help me construct it?

For example, looking for all strings that do not have a, b, and c in them in that order.

So
abasfaf3 would match, whereas
asasdfbasc would not

Answer 1

in perl:

if($str !~ /a.*?b.*?.*c/g) {     print 'match'; } 

should work.