The ">" should not be part of the filename; since you are using the three-argument version of open (good for you), the > is already specified in the open command, and doesn't need to be in the filename as well. Change $sectorOutputFiles[$sector]='>'.$path.$filenamefirstpart.$sector.".txt"; to $sectorOutputFiles[$sector]=$path.$filenamefirstpart.$sector.".txt";, and it will work. (At least, it did for me when I declared my $filenamefirstpart = ''; and fixed the filename.)

Working SSCCE: 

use strict;
use warnings;
my ($sector,$path);
my @sectorOutputFiles;
my @fh;
$path="blah";
my $filenamefirstpart='';
for($sector=0;$sector<12;$sector++){
    $sectorOutputFiles[$sector]=$path.$filenamefirstpart.$sector.".txt
+";
    print STDERR $sectorOutputFiles[$sector], "\n";
    open($fh[$sector],'>',$sectorOutputFiles[$sector])
    or die "Can't open sector filehandler for writing: $!\n";
}

[download]

In reply to Re: Handling multiple output files simultaneously using arrays of filehandles and filenames by pryrt
in thread Handling multiple output files simultaneously using arrays of filehandles and filenames by Cosmic37

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