# inventory.yml
all:
children:
web_servers:
hosts:
web1:
ansible_user: admin
Explanation:
The inventory file assigns variables like ansible_user for specific hosts or groups. This configuration defines web1 under the web_servers group with admin as the remote user.

git fetch origin
Explanation:
Fetching updates the local metadata with remote changes without altering the working directory or branches.

- name: Convert CSV to dictionary hosts: localhost
tasks:
- name: Read CSV set_fact:
csv_data: "{{ lookup('csvfile', '/tmp/data.csv', delimiter=',') }}"
- debug:
var: csv_data
Explanation:
The csvfile lookup plugin converts CSV data into dictionaries, integrating tabular data into playbooks.

ansible-playbook test_playbook.yml
Explanation:
Running a playbook verifies that the collection roles are functional and properly integrated.

- name: Compute sum of numbers hosts: localhost
vars:
numbers: [1, 2, 3, 4]
tasks:
- name: Calculate sum debug:
var: "{{ numbers | sum }}"
Explanation:
The sum filter aggregates numerical data, providing a quick computation of totals.