osx_defaultsモジュール (from Ansible 2) でMacのプロビジョニングが簡単になってすごい便利 ref: http://qiita.com/ikuwow/items/86dd11b111640cfee3f0

file0.txt

    - name: Check Dock
      shell: "defaults read com.apple.dock | grep autohide > /dev/null && test `defaults read com.apple.dock autohide` -eq 1; echo $?"
      register: is_autohide
      changed_when: is_autohide.stdout != '0'

    - name: Autohide Dock
      shell: "defaults write com.apple.dock autohide -int 1"
      notify: Restart Dock
      when: is_autohide.stdout != '0'

file1.txt

    - name: Autohide Dock
      osx_defaults: domain=com.apple.dock key=autohide type=bool value=true
      notify: Restart Dock