I'm a newbie and all I know is what I'm doing cant be the best way. I have a complex hash that if it matches something will print the persons name to one of 30 files. This is how I did it, but there must be a more efficient way!?! Also I'm trying to create a directory for all the files, but that doesnt work. Thanks for any tips 
mkdir "reports", 0755 or warn "Cannot make reports director: $!";
chdir ("/reports");

open(A, ">groupA.txt");
open(B, ">groupB.txt");
ext....

foreach my $n (keys %emp){
    print A $emp{$n}{'Emp'} if $emp{$n}{'Org'}=~/ABC/;
    print B $emp{$n}{'Emp'} if $emp{$n}{'Org'}=~/DEF/;
    ext..}

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In reply to efficiently printing to 30 files by tbone

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