my @files= qw| /path/to/file1 /path/to/file2 /path/to/file3 |;
my @allfiles;
for my $filename(@files){
     open(FILE," $filename") || die "Cannot  open $filename: $!\n";
     while(<FILE>) {
          push @allfiles, $_;
     }
     close(FILE);
}
[download]

Better would be:

my @files= qw| /path/to/file1 /path/to/file2 /path/to/file3 |;
my @allfiles;
for my $filename(@files){
    open FILE, $filename ||
        die "Cannot open $filename for reading: $!\n";
    push @allfiles, $_ while (<FILE>);
    close FILE;
}

# Or (and even more Perlish) ...

my @files= qw| /path/to/file1 /path/to/file2 /path/to/file3 |;
my @allfiles;
for my $filename(@files){
    open FILE, $filename ||
        die "Cannot open $filename for reading: $!\n";
    push @allfiles, <FILE>;
    close FILE;
}
[download]

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/me wants to be the brightest bulb in the chandelier!

Vote paco for President!