note 55625 added to function.shell-exec

i try to use shell_exec to run tar command but it not work i get time out when i try to do that $output = shell_exec('tar -cf - /home/user/public_html/dir | gzip > files.tar.gz'); echo "<pre>$output</pre>"; ---- Manual Page -- http://www.php.net/manual/en/function.shell-exec.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+55625 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+55625&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+55625&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+55625&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+55625&report=yes&reason=useless Delete: non-english -- http://master.php.net/manage/user-notes.php?action=delete+55625&report=yes&reason=non-english Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+55625&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+55625&report=yes Search -- http://master.php.net/manage/user-notes.php