diff --git a/manifests/init.pp b/manifests/init.pp
index fdfb587..489d322 100644
--- a/manifests/init.pp
+++ b/manifests/init.pp
@@ -1,47 +1,22 @@
 class ruby($version = "2.0.0-p0") {
+  include ruby::prereqs
+
   rubyinstall { "$version": }
+
 }
 
 define rubyinstall($version = $title) {
-  package {
-    "build-essential":
-      ensure => present;
-    "libssl-dev":
-      ensure => present;
-    "libreadline6":
-      ensure => present;
-    "libreadline6-dev":
-      ensure => present;
-    "zlib1g":
-      ensure => present;
-    "zlib1g-dev":
-      ensure => present;
-    "curl":
-      ensure => present;
-    "git":
-      ensure => present;
-    "rake":
-      ensure => present
-  }
+  $packages = $ruby::prereqs::packages
 
   # The rm at the start is legacy, as previous versions of this plugin
   # used to download the package as a zip file rather than cloning :(
-  exec { "ruby-build-checkout":
+
+  exec { 'ruby-build-checkout':
     command => "rm -Rf /opt/ruby-build && git clone https://github.com/sstephenson/ruby-build /opt/ruby-build",
     creates => "/opt/ruby-build/.git",
-    require => [
-      Package["curl"],
-      Package["git"],
-      Package["rake"],
-      Package["build-essential"],
-      Package["libssl-dev"],
-      Package["libreadline6"],
-      Package["libreadline6-dev"],
-      Package["zlib1g"],
-      Package["zlib1g-dev"]
-    ],
     path    => ["/usr/sbin", "/usr/bin", "/sbin", "/bin"],
-    timeout => 0
+    timeout => 0,
+    require => Package[$packages],
   }
 
   exec { "ruby-build-update":
@@ -60,30 +35,46 @@
     timeout => 0
   }
 
-  exec { "alternatives-ruby-$version":
-    command => "update-alternatives --quiet --install /usr/bin/ruby ruby /opt/ruby-$version/bin/ruby 10 --slave /usr/bin/irb irb /opt/ruby-$version/bin/irb && update-alternatives --quiet --set ruby /opt/ruby-$version/bin/ruby",
-    unless  => "test /usr/bin/ruby -ef /opt/ruby-$version/bin/ruby && test /usr/bin/irb -ef /opt/ruby-$version/bin/irb",
-    path    => ["/usr/sbin", "/usr/bin", "/sbin", "/bin"],
-    require => Exec["ruby-install-$version"]
-  }
-  exec { "alternatives-gem-$version":
-    command => "update-alternatives --quiet --install /usr/bin/gem gem /opt/ruby-$version/bin/gem 10 && update-alternatives --quiet --set gem /opt/ruby-$version/bin/gem",
-    unless  => "test /usr/bin/gem -ef /opt/ruby-$version/bin/gem",
-    path    => ["/usr/sbin", "/usr/bin", "/sbin", "/bin"],
-    require => Exec["alternatives-ruby-$version"]
-  }
+  case $operatingsystem {
+    'RedHat', 'Centos', 'Ubuntu': {
+      #set ruby path
+      file { "/etc/profile.d/ruby.sh":
+        mode    => 0755,
+        owner   => 'root',
+        group   => 'root',
+        content => "pathmunge /opt/ruby-$version/bin",
+        require => Exec["ruby-install-$version"],
+      }
+    }
 
-  exec { "gem-install-bundler-$version":
-    command => "gem install bundler",
-    unless  => "gem list | grep bundler",
-    timeout => "-1",
-    path    => ["/usr/sbin", "/usr/bin", "/sbin", "/bin"],
-    require => Exec["alternatives-gem-$version"]
+
+    'Ubuntu': {
+      exec { "alternatives-ruby-$version":
+        command => "update-alternatives --quiet --install /usr/bin/ruby ruby /opt/ruby-$version/bin/ruby 10 --slave /usr/bin/irb irb /opt/ruby-$version/bin/irb && update-alternatives --quiet --set ruby /opt/ruby-$version/bin/ruby",
+        unless  => "test /usr/bin/ruby -ef /opt/ruby-$version/bin/ruby && test /usr/bin/irb -ef /opt/ruby-$version/bin/irb",
+        path    => ["/usr/sbin", "/usr/bin", "/sbin", "/bin"],
+        require => Exec["ruby-install-$version"]
+      }
+      exec { "alternatives-gem-$version":
+        command => "update-alternatives --quiet --install /usr/bin/gem gem /opt/ruby-$version/bin/gem 10 && update-alternatives --quiet --set gem /opt/ruby-$version/bin/gem",
+        unless  => "test /usr/bin/gem -ef /opt/ruby-$version/bin/gem",
+        path    => ["/usr/sbin", "/usr/bin", "/sbin", "/bin"],
+        require => Exec["alternatives-ruby-$version"]
+      }
+
+      exec { "gem-install-bundler-$version":
+        command => "gem install bundler",
+        unless  => "gem list | grep bundler",
+        timeout => "-1",
+        path    => ["/usr/sbin", "/usr/bin", "/sbin", "/bin"],
+        require => Exec["alternatives-gem-$version"]
+      }
+      exec { "alternatives-bundle-$version":
+        command => "update-alternatives --quiet --install /usr/bin/bundle bundle /opt/ruby-$version/bin/bundle 10 && update-alternatives --quiet --set bundle /opt/ruby-$version/bin/bundle",
+        unless  => "test /usr/bin/bundle -ef /opt/ruby-$version/bin/bundle",
+        path    => ["/usr/sbin", "/usr/bin", "/sbin", "/bin"],
+        require => Exec["gem-install-bundler-$version"]
+      }
+    }
   }
-  exec { "alternatives-bundle-$version":
-    command => "update-alternatives --quiet --install /usr/bin/bundle bundle /opt/ruby-$version/bin/bundle 10 && update-alternatives --quiet --set bundle /opt/ruby-$version/bin/bundle",
-    unless  => "test /usr/bin/bundle -ef /opt/ruby-$version/bin/bundle",
-    path    => ["/usr/sbin", "/usr/bin", "/sbin", "/bin"],
-    require => Exec["gem-install-bundler-$version"]
   }
-}
diff --git a/manifests/prereqs.pp b/manifests/prereqs.pp
new file mode 100644
index 0000000..ea5fd68
--- /dev/null
+++ b/manifests/prereqs.pp
@@ -0,0 +1,23 @@
+class ruby::prereqs {
+  case $operatingsystem {
+    ubuntu: {
+      $packages = [ "build-essential", "libssl-dev", "libreadline5",
+      "libreadline6-dev", "zlib1g", "zlib1g-dev", "curl", "git",
+      "rake",]
+      }
+
+    centos: {
+      $packages = [ "gcc", "make", "automake", "autoconf", "libcurl-devel", 
+      "openssl-devel", "zlib-devel","curl", "git",] 
+    }
+    
+    default: {
+      fail("unsupported operating system, patches welcome")
+    }
+
+  }
+
+  package { $packages:
+    ensure => installed,
+  }
+}
diff --git a/plugins/facter/rbenv_ruby.rb b/plugins/facter/rbenv_ruby.rb
new file mode 100644
index 0000000..d0f7b73
--- /dev/null
+++ b/plugins/facter/rbenv_ruby.rb
@@ -0,0 +1,11 @@
+Facter.add(:rbenv_ruby) do
+  setcode do
+   `/usr/bin/which ruby`.chomp
+  end
+end
+
+Facter.add(:rbenv_ruby_home) do
+  setcode do
+  File.dirname(`/usr/bin/which ruby`).chomp!('bin')
+  end
+end