http://qs1969.pair.com?node_id=11113509


in reply to Getiing keys or values of a file based hash

To add to Fletch answer I have ran your code and noticed an error message that array @keys is not declared and you can do this with something as "my @keys;". You could delete the last while loop and save the keys in array @keys. And then cycle through the array like this:
foreach my $key ( @keys) { print $key,"\n"; }