According to the docs https://help.ubuntu.com/10.04/serverguide/httpd.html i have done following, and that is almost how i do always in my Fedora, but Ubuntu looks like its not working.

a) DNS to IP

$ echo "127.0.0.1  a" > /etc/hosts
$ echo "127.0.0.1  b" > /etc/hosts

b) Apache virtualhost

$ ls
1  2  default  default.backup  default-ssl
$ cat 1
<VirtualHost *:80>
 ServerName a
 ServerAlias a
 DocumentRoot /var/www/html/a/public
 <Directory /var/www/html/a/public>
    #AddDefaultCharset utf-8
    DirectoryIndex index.php
    AllowOverride All
    Order allow,deny
    Allow from all
 </Directory>
</VirtualHost>

$ cat 2
<VirtualHost *:80>
 ServerName b
 ServerAlias b
 DocumentRoot /var/www/html/b/public
 <Directory /var/www/html/b/public>
    #AddDefaultCharset utf-8
    DirectoryIndex index.php
    AllowOverride All
    Order allow,deny
    Allow from all
 </Directory>
</VirtualHost>

c) load into Apache and restart the service

$ a2ensite 1
$ a2ensite 2
$ a2dissite default
$ /etc/init.d/apache2 restart

d) Browse the new 2 hosts

$ firefox http://a

Does not work it goes always with http://a or http://b to /var/www/html

How do i fix it so that it goes to its own directory e.g: http://a goes to /var/www/html/a/public not /var/www/html?