ansible lookup

Ansible lookup plugins allow you to query external data sources or perform simple calculations within your Ansible playbooks. These plugins provide a way to dynamically retrieve information during playbook execution.

Here's an example of using the `lookup` plugin in Ansible:

- name: Retrieve data from a file
  debug:
    msg: "{{ lookup('file', '/path/to/file.txt') }}"

- name: Retrieve data from a command output
  shell: echo "Hello, World!"
  register: command_output

- name: Display the command output
  debug:
    var: command_output.stdout_lines | lookup('first')

In the above example, the `lookup` plugin is used to read the contents of a file (`file.txt`) and display it using the `debug` module. It is also used to extract the first item from the `stdout_lines` of a command execution result.

You can find more information about available lookup plugins in the Ansible documentation.