inspec/docs/resources/package.md.erb
Kimberly Garmoe b45b77cd13 Simplifies 'matchers' language in docs (#2496)
Signed-off-by: kagarmoe <kgarmoe@chef.io>
2018-01-31 07:24:16 -05:00

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---
title: About the package Resource
---
# package
Use the `package` InSpec audit resource to test if the named package and/or package version is installed on the system.
<br>
## Syntax
A `package` resource block declares a package and (optionally) a package version:
describe package('name') do
it { should be_installed }
end
where
* `('name')` must specify the name of a package, such as `'nginx'`
* `be_installed` is a valid matcher for this resource
<br>
## Examples
The following examples show how to use this InSpec audit resource.
### Test if NGINX version 1.9.5 is installed
describe package('nginx') do
it { should be_installed }
its('version') { should eq '1.9.5' }
end
### Test that a package is not installed
describe package('some_package') do
it { should_not be_installed }
end
### Test if telnet is installed
describe package('telnetd') do
it { should_not be_installed }
end
describe inetd_conf do
its('telnet') { should eq nil }
end
### Test if ClamAV (an antivirus engine) is installed and running
describe package('clamav') do
it { should be_installed }
its('version') { should eq '0.98.7' }
end
describe service('clamd') do
it { should_not be_enabled }
it { should_not be_installed }
it { should_not be_running }
end
### Verify if some_package is installed according to my_rpmdb
describe package('some_package', rpm_dbpath: '/var/lib/my_rpmdb') do
it { should be_installed }
end
### Verify if Memcached is installed, enabled, and running
Memcached is an in-memory key-value store that helps improve the performance of database-driven websites and can be installed, maintained, and tested using the `memcached` cookbook (maintained by Chef). The following example is from the `memcached` cookbook and shows how to use a combination of the `package`, `service`, and `port` InSpec audit resources to test if Memcached is installed, enabled, and running:
describe package('memcached') do
it { should be_installed }
end
describe service('memcached') do
it { should be_installed }
it { should be_enabled }
it { should be_running }
end
describe port(11_211) do
it { should be_listening }
end
<br>
## Matchers
For a full list of available matchers please visit our [matchers page](https://www.inspec.io/docs/reference/matchers/).
### be_held
The `be_held` matcher tests if the named package is "held". On dpkg platforms, a "held" package
will not be upgraded to a later version.
it { should be_held }
### be_installed
The `be_installed` matcher tests if the named package is installed on the system:
it { should be_installed }
### version
The `version` matcher tests if the named package version is on the system:
its('version') { should eq '1.2.3' }
You can also use the `cmp OPERATOR` matcher to perform comparisions using the version attribute:
its('version') { should cmp >= '7.35.0-1ubuntu3.10' }
`cmp` understands version numbers using Gem::Version, and can use the operators `==, <, <=, >=, and >`. It will compare versions by each segment, not as a string - so '7.4' is smaller than '7.30', for example.