Ensure permissions on /etc/hosts stay intact

lib/vagrant-hostmanager/hosts_file/updater.rb

@@ -17,17 +17,14 @@ def update_guest(machine)
 
  if (machine.communicate.test("uname -s | grep SunOS"))
  realhostfile = '/etc/inet/hosts'
- move_cmd = 'mv'
  elsif (machine.communicate.test("test -d $Env:SystemRoot"))
  windir = ""
  machine.communicate.execute("echo %SYSTEMROOT%", {:shell => :cmd}) do |type, contents|
  windir << contents.gsub("\r\n", '') if type == :stdout
  end
  realhostfile = "#{windir}\\System32\\drivers\\etc\\hosts"
- move_cmd = 'mv -force'
  else
  realhostfile = '/etc/hosts'
- move_cmd = 'mv -f'
  end
  # download and modify file with Vagrant-managed entries
  file = @global_env.tmp_path.join("hosts.#{machine.name}")
@@ -37,11 +34,9 @@ def update_guest(machine)
  # upload modified file and remove temporary file
  machine.communicate.upload(file, '/tmp/hosts')
  if windir
- machine.communicate.sudo("#{move_cmd} /tmp/hosts/hosts.#{machine.name} #{realhostfile}")
- elsif machine.communicate.test('test -f /.dockerinit')
- machine.communicate.sudo("cat /tmp/hosts > #{realhostfile}")
+ machine.communicate.sudo("mv -force /tmp/hosts/hosts.#{machine.name} #{realhostfile}")
  else
- machine.communicate.sudo("#{move_cmd} /tmp/hosts #{realhostfile}")
+ machine.communicate.sudo("cat /tmp/hosts > #{realhostfile}")
  end
  end