Question about Hostingrails.com or Linux in general re running rails

Hi:

I'm using HostingRails.com to host my rails projects. Their documentation is pretty good. I recently deployed a second app but now my first is not working (the second is). They host on linux. My questions:

1. How do I know my app is running? I used ps -aux but can't identify processes with any given rails project.

2. If it had stopped, how would I start the app again. I've been using Locomotive up till now. Locomotive is great. It includes a nice shiny "START" this app button. I have no idea what the command line equivalent is.

3. Does anyone have an example of a .htaccess file that is working at hostingrails.com to deploy a second app. I am particularly curious about the rewrite rules and would like to see them in the context of the whole .htaccess files.

If anyone can help me, those who like me will be truly grateful. thanks in advance.