I think it should be something like this:
#!/usr/local/bin/perl

use strict;
use warnings;
use CGI qw/:standard/;

my $q= new CGI;

print $q->header(-type => 'application/vnd.xls',
                 -attachment => '/path/to/overview.xls');

[download]

In reply to Re: cgi: malformed header from script. Bad header= by Khen1950fx
in thread cgi: malformed header from script. Bad header= by jeanluca

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