$ brew install ansible            # OSX
$ [sudo] pip install ansible      # elsewhere~$ mkdir setup
~$ cd setupThis is a list of hosts you want to manage, grouped into groups. (Hint: try using 127.0.0.1 to deploy to your local machine)
# ~/setup/hosts
[sites]
127.0.0.1
192.168.0.1
192.168.0.2
192.168.0.3# ~/setup/playbook.yml
- hosts: 127.0.0.1
  user: root
  tasks:
    - name: install nginx
      apt: pkg=nginx state=present
    - name: start nginx every bootup
      service: name=nginx state=started enabled=yes
    - name: do something in the shell
      shell: echo hello > /tmp/abc.txt
    - name: install bundler
      gem: name=bundler state=latest~/setup$ ls
hosts
playbook.yml~/setup$ ansible-playbook -i hosts playbook.yml
PLAY [all] ********************************************************************
GATHERING FACTS ***************************************************************
ok: [127.0.0.1]
TASK: [install nginx] *********************************************************
ok: [127.0.0.1]
TASK: [start nginx every bootup] **********************************************
ok: [127.0.0.1]
...