Only check whether a line present in a file (ansible)

Question

In ansible, I need to check whether a particular line present in a file or not. Basically, I need to convert the following command to an ansible task. My goal is to only che

Answer 1

You can use the file plugin for this scenario.

To set a fact you can use in other tasks ... this works.

- name: Check whether /tmp/my.conf contains "127.0.0.1"
  set_fact:
    myconf: "{{ lookup('file', '/tmp/my.conf') }}"  
  ignore_errors: yes

- name: Greet the world if /tmp/my.conf contains "127.0.0.1"
  debug: msg="Hello, world!"
  when: "'127.0.0.1' in myconf"

To check the file content as a condition of a task ... this should work.

- name: Greet the world if /tmp/my.conf contains "127.0.0.1"
  debug: msg="Hello, world!"
  when: "'127.0.0.1' in lookup('file', '/tmp/my.conf')"