Installing Contributed Themes on Your VPS

Login to your server

To login to the command line of your VPS:

• If you use Windows, we recommend the Putty SSH software
• Use the IP address as your host, 22 as your port number, and your SSH username as the account (usually 'admin').
• for the Mac, you should already have an application called "Terminal" or you can download the open source alternative iTerm. The SSH host is the IP of your VPS, and your login is 'admin' plus the password provided to you when you received your server.

1. ssh [your_IP] -l admin
2. sudo su
• This will grant you full access to your server. You'll probably have to type your password

Initial Setup

You will only have to do this once if it's not already done. 

1. cd /var/www/
• This will put you in your website's directory (technically the directory just above it).
2. mkdir themes
3. cd /var/www/html/sites/yourdomain.com
4. mkdir themes

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Courtesy : http://support.bryght.com