apache_passenger

Q.How to uninstall apache2 
a. sudo apt-get purge apache2.2-common

Q. download file showing when opening phpmyadmin
A. sudo apt-get install libapache2-mod-php5

Q. How to install apache2
A. sudo apt-get install apache2


rvmsudo passenger-install-nginx-module
sudo apt-get install apache2-prefork-dev

--------------------------------------------
The Apache 2 module was successfully installed.

Please edit your Apache configuration file, and add these lines:

   LoadModule passenger_module /home/user/.rvm/gems/ruby-1.9.2-p290/gems/passenger-3.0.13/ext/apache2/mod_passenger.so
   PassengerRoot /home/user/.rvm/gems/ruby-1.9.2-p290/gems/passenger-3.0.13
   PassengerRuby /home/user/.rvm/wrappers/ruby-1.9.2-p290/ruby

After you restart Apache, you are ready to deploy any number of Ruby on Rails
applications on Apache, without any further Ruby on Rails-specific
configuration!

Press ENTER to continue.

--------------------------------------------
Deploying a Ruby on Rails application: an example

Suppose you have a Rails application in /somewhere. Add a virtual host to your
Apache configuration file and set its DocumentRoot to /somewhere/public:

   <VirtualHost *:80>
      ServerName www.yourhost.com
      # !!! Be sure to point DocumentRoot to 'public'!
      DocumentRoot /somewhere/public    
      <Directory /somewhere/public>
         # This relaxes Apache security settings.
         AllowOverride all
         # MultiViews must be turned off.
         Options -MultiViews
      </Directory>
   </VirtualHost>

And that's it! You may also want to check the Users Guide for security and
optimization tips, troubleshooting and other useful information:

  /home/user/.rvm/gems/ruby-1.9.2-p290/gems/passenger-3.0.13/doc/Users guide Apache.html

Enjoy Phusion Passenger, a product of Phusion (www.phusion.nl) :-)
http://www.modrails.com/

Phusion Passenger is a trademark of Hongli Lai & Ninh Bui.