$count= @{[$string=~ /GUAUG/g]};

A bit inefficent if there are a lot of matches, using a /g regexp in scalar context would be better.

Update: The locations too? Than you'll need a /g regexp in scalar context and read $-[0] after each match.

In reply to Re: look for substrings and getting their location by ambrus
in thread look for substrings and getting their location by wolffm

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