CentOS does not always have VIM installed on it. This is easy to fix though:
yum install vim-common vim-enhanced vim-minimal
Run as sudo.
Tag: vim
Navigating VIM on Mac keyboards
If you’re trying to get around documents in VIM using a Mac keyboard, you may feel fairly stumped without a page up and page down button. But you need not be!
VIM has an extensive set of commands, including moving backwards and forwards through a document a page at a time. They are logically named too – Ctrl+F will go forward a page and Ctrl+B will go back a page.