my $backupcommand = "tar -cvf - ".$directory."/".$seasonYear."*.html|7z a -mx9 -si ".$backupdirectory."/".$seasonYear.".tar.7z";
my $result = `$backupcommand 2>&1`;

##</code><code>##

user@server:~$ perl dailyscript.pl > testout.txt
tar: Removing leading `/' from member names
/home/user/backupdirectory/2011.html
user@server:~$

##</code><code>##


7-Zip [64] 9.20  Copyright (c) 1999-2010 Igor Pavlov  2010-11-18
p7zip Version 9.20 (locale=en_GB.UTF-8,Utf16=on,HugeFiles=on,4 CPUs)
Creating archive /home/user/backupdirectory/2011.tar.7z

Compressing  [Content]

Everything is Ok

##</code><code>##

my $backupcommand = "tar -cvf - ".$directory."/".$seasonYear."*.html 2>&1|7z a -mx9 -si ".$backupdirectory."/".$seasonYear.".tar.7z";
my $result = `$backupcommand 2>&1`;