My home directory contains these files:-
08-1.txt
08-2.txt
09-1.txt
09-2.txt 
##</code><code>##

i have an array
@files = ("08","09");
##</code><code>##

foreach $file (@files) 
{
$file =~ s/\s*$//;
@command = `ls -l|grep $file`;
print @command;
system("/usr/bin/perl hash.pl $file");
}

##</code><code>##

Content of hash.pl

#!/usr/local/bin/perl

my %data;
my $header = <>;  # first line
while(<>) {
    my($key) = split /\s+/;
    $data{$key} = $_;
}

print $header;
foreach my $key (sort keys %data) {
    print $data{$key};
}


##</code><code>##

value of @command array after the first iteration of @files
is

$command[0]=08-1.txt

$command[1]=08-2.txt

but for the second iteration of @files value of @command array :-
$command[0]=09-1.txt
09-2.txt

$command[1]=empty.

why this is happening?

i want the value to be 

$command[0]=09-1.txt


$command[1]=09-2.txt

can anyone please help?