open FILE, "<", $myfile || die "No open $!\n";
Unrelated to your problem, but this line has a bug. Because of operator precedence, it will not die if the file can not be opened, as you desire. It will only die if $myfile is 0 or undefined. Here is one way to fix the bug: 
open FILE, "<", $myfile or die "No open $!\n";

[download]

Furthermore, it is now common practice to use lexical filehandles: 

open my $fh, '<', $myfile or die "No open $!\n";
while (<$fh>) {

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This can be simplified using autodie (part of Core starting with Perl 5.10.1): 

use autodie;
open my $fh, '<', $myfile;
while (<$fh>) {

[download]

In reply to Re: creating hash of hashes from input file by toolic
in thread creating hash of hashes from input file by perlnewbie9292

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