Hi, $a and $b already contain the file path; if you want to sort by the path, just use them:

What about this?

for my $apache_file ( sort { $a cmp $b } keys( %{ $merge_structure{ ap
+ache_log }\
 } ) ) {
    print "$apache_file\n";
}
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If you don't want to sort by the file path you should tell us, by what you want to sort.

The file path is the key, you are sorting by the value, whatever that may be...