How do I sort a hash by its values?

[Anonymous Monk]

I have a hash containing error-codes from a web-server log, and a number as values. I would like to print them out sorted by the number. How do I do that?

[btrott]

Read perlman:perlfaq4, "How do I sort a hash (optionally by value instead of key)?"

But in short:

@keys = sort { $hash{$b} <=> $hash{$a} } keys %hash;

@keys now contains the sorted list of keys.