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name: env
author: Jan-Piet Mens (@jpmens) <jpmens(at)gmail.com>
version_added: "0.9"
short_description: Read the value of environment variables
description:
- Allows you to query the environment variables available on the
controller when you invoked Ansible.
options:
_terms:
description:
- Environment variable or list of them to lookup the values for.
required: True
default:
description: What return when the variable is undefined
type: raw
default: ''
version_added: '2.13'
notes:
- You can pass the C(Undefined) object as C(default) to force an undefined error
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- name: Basic usage
ansible.builtin.debug:
msg: "'{{ lookup('ansible.builtin.env', 'HOME') }}' is the HOME environment variable."
- name: Before 2.13, how to set default value if the variable is not defined.
This cannot distinguish between USR undefined and USR=''.
ansible.builtin.debug:
msg: "{{ lookup('ansible.builtin.env', 'USR')|default('nobody', True) }} is the user."
- name: Example how to set default value if the variable is not defined, ignores USR=''
ansible.builtin.debug:
msg: "{{ lookup('ansible.builtin.env', 'USR', default='nobody') }} is the user."
- name: Set default value to Undefined, if the variable is not defined
ansible.builtin.debug:
msg: "{{ lookup('ansible.builtin.env', 'USR', default=Undefined) }} is the user."
- name: Set default value to undef(), if the variable is not defined
ansible.builtin.debug:
msg: "{{ lookup('ansible.builtin.env', 'USR', default=undef()) }} is the user."
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_list:
description:
- Values from the environment variables.
type: list
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