title: Warning: system() [function.system]: Cannot execute a blank command in line 19
body: <p>I've got a site hosted with 1and1 - who are useless! For some reason the backup scripts they provide no longer work and they can't provide me with an answer! So I thought I'd write my own, this is my code: </p>
  
  <pre><code>$command = "mysqldump -u [usernameXXXX] -p [passwordXXX] [dbname] &gt; [backupfile.sql]";
   system($commmand);
  </code></pre>
  
  <p>however I get the following error:</p>
  
  <blockquote>
    <p>Warning: system() [function.system]: Cannot execute a blank command in /homepages/46/
        XXXXXX/htdocs/admin/db_backup.php on line 19</p>
  </blockquote>