More robust hostname checking for RedHat [GH-1566]

CHANGELOG.md

@@ -79,6 +79,7 @@ BUG FIXES:
     is not created. [GH-1562]
   - Multiple machines defined in the same Vagrantfile with the same
     name will properly merge.
+  - More robust hostname checking for RedHat. [GH-1566]
 
 ## 1.1.6 (April 3, 2013)
 

plugins/guests/redhat/cap/change_host_name.rb

@@ -5,7 +5,7 @@ module VagrantPlugins
         def self.change_host_name(machine, name)
           machine.communicate.tap do |comm|
             # Only do this if the hostname is not already set
-            if !comm.test("sudo hostname | grep '#{name}'")
+            if !comm.test("sudo hostname | grep --line-regexp '#{name}'")
               comm.sudo("sed -i 's/\\(HOSTNAME=\\).*/\\1#{name}/' /etc/sysconfig/network")
               comm.sudo("hostname #{name}")
               comm.sudo("sed -i 's@^\\(127[.]0[.]0[.]1[[:space:]]\\+\\)@\\1#{name} #{name.split('.')[0]} @' /etc/hosts")