OpenCart

Installation
To install via FTP just upload the files to your domain directory and point your browser to yourdomain.com/install.

Or you can use these SSH commands to download and unzip OpenCart:

cd ~ wget https://github.com/downloads/opencart/opencart/opencart_v1.5.4.1.zip unzip opencart_v1.5.4.1.zip mv opencart_v1.5.4.1 yourdomain.com

Full instructions are provided on the OpenCart website:

Configuration
Under your store's 'Settings' -> 'E-Mail' section, you will need to set the optional mail parameter '-femail@yourdomain.com' if you want to use PHP Mail.

If your e-mail is not hosted by DreamHost, you will need to use the SMTP mail option.

Tweaks and Modifications
You should follow the instructions on PHP.ini to modify the phprc or php.ini with the following recommended settings:

magic_quotes_gpc = Off; register_globals = Off; default_charset	= UTF-8; memory_limit = 64M; max_execution_time = 18000; upload_max_filesize = 999M; safe_mode = Off; mysql.connect_timeout = 20; session.use_cookies = On; session.use_trans_sid = Off; session.gc_maxlifetime = 12000000; allow_url_fopen = on;

upload_max_filesize = 25M post_max_size = 25M

max_input_vars = 3000 suhosin.post.max_vars = 3000 suhosin.request.max_vars = 3000