hello, I have a few questions:

A. I want to install nginx on a seperate directory on my Ubuntu 14.04 LTS. Can I use the pre built version for that? How do it? Download the deb and run the command from terminal with the --prefix=/home/wibmoapp/apps/ngx/n1_12_0 option?

B. Else do I need to build from source? I'm able to build from source, but I want to know what are the exact modules that are included in the pre built Ubuntu version, where can I see that?

C. If I want to use debug option with pre built, installed on a seperate directory, what are the steps? In the Packages file (http://nginx.org/packages/mainline/ubuntu/dists/trusty/nginx/binary-amd64/Packages) I see
Filename: pool/nginx/n/nginx/nginx-dbg_1.9.0-1~trusty_amd64.deb
Size: 1217282

So is this a fresh install or an add on?
Need to back up config, install this and then re apply config?

thank you very much.