use these commands:
mkdir shop/
cd shop/
wget http://www.prestashop.com/download/prestashop_1.3.5.0.zip
unzip prestashop_1.3.5.0.zip
rm prestashop_1.3.5.0.zip
chmod 755 config tools/smarty/compile sitemap.xml
chmod -R 755 img mails modules themes/prestashop/lang translations upload download
then go to your web browser to http://www.yousite.com/prestashop/
run through the web installer
when finished come back to the terminal and use the following commands…
rm -r install?mv admin NEWADMINNAME
• NEWADMINNAME to be replaced with a different name for your admin panel than admin. prestashop requires this.
then your done. prestashop installed much much more easily than magento. for the record.