Some of the most important things to know about Linux


These settings are applicable to Redhat/ Fedora / CentOS and I am not aware if this holds good even on other Distros.

Important File / Folder Locations

  • Location of HTTPD (Apache) Configuration File:
  • Location of PHP Configuration File (php.ini):

Service Related Information

Enabling / Disabling Services
The chkconfig command can be used for enabling / disabling services on Redhat based linux distributions.

EX: # chkconfig httpd –add
EX: # chkconfig httpd on
EX: # chkconfig –list httpd
EX: # chkconfig httpd of
EX: # chkconfig httpd –del

Starting / stopping / a service

service <service name> start/stop
EX: # service httpd stop
EX: # service httpd start

Running several name-based web sites on single IP address on Fedora 8

I have given below a few main points which may be useful in setting up a virtual host on Fedora 8.

I would give these examples considering you wish to have and

Step 1: Add your new domain to hosts file.

This is very essential else you will get address not found error!

Host file is usually located in /etc/hosts

Double click on the "hosts" file, and it should open in "gedit".
The configuration should resemble something like this:

#if you would like to setup only for local system

#setting up for a IP which can be accessessible outside


Step 2: Load VHOST Module in Apache

Now open the Apache configuration file "httpd.conf" and make sure that vhost alias module is loaded as shown.

Usual FILE LOCATION: etc/httpd/conf/httpd.conf

LoadModule vhost_alias_module modules/

Step 3: Add Virtual Host Entries
Now it is time to make proceed and configure Apache Server (the httpd service) to serve files for the different websites.


      DocumentRoot /var/www/url1-folder
      DocumentRoot /var/www/url2-folder



      DocumentRoot /var/www/url1-folder

      DocumentRoot /var/www/url2-folder

NOTE: The following settings usually do not work on Linux platform:

<VirtualHost *:80> or NameVirtualHost *.80

Instead you need to use the actual IP address such as:

<VirtualHost> or NameVirtualHost

If you use *.80, you may always see the default website for both and

You may find more virtualhost examples at the following URL:

For CentOS There are a few strict rules to follow as given in:


Setup 4: The final Step – Restart Apache
      The final step is to re-start httpd service using the following command.

service httpd restart


Now you should be able to browse and using any web-browser such as Mozilla firefox.