Tue May 18 21:01:29 PDT 2010 -->du -ks htdocs 10239443 htdocs -->bc scale=2 10239443 * 1024 10485189632 bytes 10,485,189,632 using about 10.5GB Sat Sep 3 12:45:58 PDT 2011 27,086,908,416 bytes du -s from slash, / >-||>pwd /var/apache2/2.2/htdocs >-||>du -k -s 20960477 . >-||>bc scale=2 20960477 * 1024 21,463,528,448 bytes from /var/apache2/2.2/htdocs 27086908416 - 21463528448 5,623,379,968 other space, overhead etc, not part of /var/apache2/2.2/htdocs