#!/usr/bin/perl
use Modern::Perl;
use File::Slurp qw/read_file write_file/;
my $pfaminput ='D://ARP//Downloads//Trembl//toxinpospf.txt';
my $seedinput ='D://ARP//Downloads//PFACFULL.txt';
#open OUTPUT, ">", 'D://ARP//Downloads//trembl//Toxin-NegativeACClist.
+txt';
#select OUTPUT;

while (<$pfaminput>){
    my $pfam = $_;
    print $pfam;
#while (<$seedinput>)    {
#    my $blah = substr $_, 0, 5;
#    if ($blah=<$pfaminput>) {
#print $_;        
#    }
#    
#}
}

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Hi all. When I execute this code, I get: readline() on unopened filehandle at <insertprogramnamehere> line 9

This is my line 9

while (<$pfaminput>){

Why is this? Please help and many thanks!

In reply to readline() on unopened filehandle by invaderzard

Title:
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and:  <code> code here </code>
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