I'm currently reading 'Definitive Guide to Apache mod_rewrite' and throughout the book there are other Apache modules mentioned that are better alternatives in given scenarios.
This has got me wondering what all is installed on my site. I don't have SSH access to the server, and I don't have access to any of the config files (afaik).
Is there any way for me to determine what is installed, or do I have to directly ask my host? I suppose certain commands could be run inside PHP (i.e. using backticks), but I'm not sure what the limitations of that are.