Well since you say delete you could use something like 
for (keys %runset) {
  unless($_ eq uc($_)) { 
    delete $runset{$_};
  } 
}

[download]
before your printing loop.

However you have another problem: a hash is un-ordered, so you won't get the sentence you expect unless you are very lucky - you need some way to specify the order in which the values of the uppercase keys are printed. The example you provide doesn't work for a simple sort of the uppercase keys so you'll have to think of something else.

--
I'd like to be able to assign to an luser

In reply to Re: Parsing a hash table for only variables that are uppercase. by Albannach
in thread Parsing a hash table for only variables that are uppercase. by Rhodium

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