rakefile.rb

#I am using the port install apache version
#on top of that i have the debian structure of sites-enabled and sites-available simply 
#by creating symlink from one folder  to another  
vhost_config_path = "/opt/local/apache2/conf"

desc "make vhost "
task :vhost_create do
  require 'erb'
  @site_domain =  ENV["domain"]
  @site_name   =  ENV["name"]
  puts "The vhost name is #{@site_name} and the url is #{@site_domain}"
  vhost_config_file = ERB.new(File.read(FileUtils.getwd + '/vhost.conf.erb')).result(binding)

  File.open(FileUtils.getwd + "/#{@site_name}.vhost.conf", 'w') do |vhost_file|
    vhost_file << vhost_config_file
  end
  sh "sudo mv #{@site_name}.vhost.conf #{vhost_config_path}/sites-available/#{@site_name}.conf"
end

desc "move vhost to appropriate folder and create syslink to sites-enabled"
task :vhost_enable do
  @site_name   =  ENV["name"]
  sh "sudo ln -s #{vhost_config_path}/sites-available/#{@site_name}.conf #{vhost_config_path}/sites-enabled/#{@site_name}.conf"
end

desc "disable vhost"
task :vhost_disable do
  @site_name   =  ENV["name"]
  sh "sudo rm #{vhost_config_path}/sites-enabled/#{@site_name}.conf"
end

desc "add new url to host file"
task :host_add do
  domain_host = "\n127.0.0.1   #{@site_domain}"
  File.open("/etc/hosts", 'a') do |host_file|
    host_file << domain_host
    puts "Host file updated"
  end
end

desc "restart apache"
task :apache_restart do
  #this path needs to be configured to point to your own httpd
  sh "sudo /opt/local/apache2/bin/httpd -k restart"
  puts "Apache restarted"
end

desc "enable a vhost and restart apache"
task :site_enable => [:vhost_enable, :apache_restart] do
  puts "#{@site_name} has been enabled"
end

desc "disable a vhost and restart apache"
task :site_disable => [:vhost_disable, :apache_restart] do
  puts "#{@site_name} has been disabled"
end

desc "creating a new site locally"
task :site_create => [:vhost_create, :site_enable, :host_add] do
  puts "#{@site_name} has been created with the url htt://#{@site_domain}"
end

vhost.conf.erb

<VirtualHost *:80>
 ServerName <%= @site_domain %>
 ServerAdmin admin@<%= @site_domain %>
 DocumentRoot "/Users/shakur/Sites/<%= @site_name %>"
 <Directory />
     Options FollowSymLinks
     AllowOverride all
     Order deny,allow
     #Deny from all  #This is the original line
     Allow from all    #Changed to this line
     Satisfy all
 </Directory>
 ErrorLog "/var/log/sites/<%= @site_name %>.local-error_log"
 CustomLog "/var/log/sites/<%= @site_name %>.local-access_log" common
</VirtualHost>