For portability's sake, use the File::Spec or File::Basename module (because different OSs have different rules for what separates the path, and such). However, in answer to the general question of how one does this sort of string manipulation in perl:
my @path_pieces = split('/', $path);
my $last_path_piece = $path_pieces[$#path_pieces];
or
my ($last_path_piece) = $path =~ m|/(.*?)$|;
my ($last_path_piece) = $path =~ m|([^/]*)$|;
to give a couple of the more idiomatic methods.
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