Ubuntu change_host_name cap

plugins/guests/ubuntu/cap/change_host_name.rb

@@ -0,0 +1,23 @@
+module VagrantPlugins
+  module GuestUbuntu
+    module Cap
+      class ChangeHostName
+        def self.change_host_name(machine, name)
+          machine.communicate.tap do |comm|
+            if !comm.test("sudo hostname | grep '^#{name}$'")
+              comm.sudo("sed -i 's/.*$/#{name}/' /etc/hostname")
+              comm.sudo("sed -i 's@^\\(127[.]0[.]1[.]1[[:space:]]\\+\\)@\\1#{name} #{name.split('.')[0]} @' /etc/hosts")
+              if comm.test("[ `lsb_release -c -s` = hardy ]")
+                # hostname.sh returns 1, so I grep for the right name in /etc/hostname just to have a 0 exitcode
+                comm.sudo("/etc/init.d/hostname.sh start; grep '#{name}' /etc/hostname")
+              else
+                comm.sudo("service hostname start")
+              end
+              comm.sudo("hostname --fqdn > /etc/mailname")
+            end
+          end
+        end
+      end
+    end
+  end
+end

plugins/guests/ubuntu/guest.rb

@@ -27,22 +27,6 @@ module VagrantPlugins
           vm.communicate.sudo("[ -x /sbin/initctl ] && /sbin/initctl emit vagrant-mounted MOUNTPOINT=#{real_guestpath}")
         end
       end
-
-      def change_host_name(name)
-        vm.communicate.tap do |comm|
-          if !comm.test("sudo hostname | grep '^#{name}$'")
-            comm.sudo("sed -i 's/.*$/#{name}/' /etc/hostname")
-            comm.sudo("sed -i 's@^\\(127[.]0[.]1[.]1[[:space:]]\\+\\)@\\1#{name} #{name.split('.')[0]} @' /etc/hosts")
-            if comm.test("[ `lsb_release -c -s` = hardy ]")
-                # hostname.sh returns 1, so I grep for the right name in /etc/hostname just to have a 0 exitcode
-                comm.sudo("/etc/init.d/hostname.sh start; grep '#{name}' /etc/hostname")
-            else
-                comm.sudo("service hostname start")
-            end
-            comm.sudo("hostname --fqdn > /etc/mailname")
-          end
-        end
-      end
     end
   end
 end

plugins/guests/ubuntu/plugin.rb

@@ -10,6 +10,11 @@ module VagrantPlugins
         require File.expand_path("../guest", __FILE__)
         Guest
       end
+
+      guest_capability("ubuntu", "change_host_name") do
+        require_relative "cap/change_host_name"
+        Cap::ChangeHostName
+      end
     end
   end
 end