inspec/docs/resources/os_env.md.erb
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---
title: About the os_env Resource
---
# os_env
Use the `os_env` InSpec audit resource to test the environment variables for the platform on which the system is running.
## Syntax
A `os_env` resource block declares an environment variable, and then declares its value:
describe os_env('VARIABLE') do
its('matcher') { should eq 1 }
end
where
* `('VARIABLE')` must specify an environment variable, such as `PATH`
* `matcher` is a valid matcher for this resource
## Matchers
This InSpec audit resource has the following matchers:
### be
<%= partial "/shared/matcher_be" %>
### cmp
<%= partial "/shared/matcher_cmp" %>
### content
The `content` matcher return the value of the environment variable:
its('content') { should eq '/usr/local/bin:/usr/local/sbin:/usr/sbin:/usr/bin:/sbin' }
### eq
<%= partial "/shared/matcher_eq" %>
### include
<%= partial "/shared/matcher_include" %>
### match
<%= partial "/shared/matcher_match" %>
### split
The `split` splits the content with the `:` deliminator:
its('split') { should include (':') }
or:
its('split') { should_not include ('.') }
Use `-1` to test for cases where there is a trailing colon (`:`), such as `dir1::dir2:`:
its('split') { should include ('-1') }
## Examples
The following examples show how to use this InSpec audit resource.
### Test the PATH environment variable
describe os_env('PATH') do
its('split') { should_not include('') }
its('split') { should_not include('.') }
end
### Test Habitat environment variables
Habitat uses the `os_env` resource to test environment variables. The environment variables are first defined in a whitespace array, after which each environment variable is tested:
hab_env_vars = %w(HAB_AUTH_TOKEN
HAB_CACHE_KEY_PATH
HAB_DEPOT_URL
HAB_ORG
HAB_ORIGIN
HAB_ORIGIN_KEYS
HAB_RING
HAB_RING_KEY
HAB_STUDIOS_HOME
HAB_STUDIO_ROOT
HAB_USER)
hab_env_vars.each do |e|
describe os_env(e) do
its('content') { should eq nil }
end
end