inspec/docs/resources/crontab.md.erb
Franklin Webber a359399fa0 Fixes partially indented blocks and unescaped underscores (#2731)
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Signed-off-by: Franklin Webber <franklin@chef.io>
2018-02-26 11:11:06 -05:00

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---
title: About the crontab Resource
platform: linux
---
# crontab
Use the `crontab` InSpec audit resource to test the crontab entries for a particular user on the system. It recognizes special time strings (@yearly, @weekly, etc).
<br>
## Syntax
A `crontab` resource block declares a user (which defaults to the current user, if not specified), and then the details to be tested, such as the schedule elements for each crontab entry or the commands itself:
describe crontab do
its('commands') { should include '/some/scheduled/task.sh' }
end
<br>
## Examples
The following examples show how to use this InSpec audit resource.
### Test that root's crontab has a particular command
describe crontab('root') do
its('commands') { should include '/path/to/some/script' }
end
### Test that myuser's crontab entry for command '/home/myuser/build.sh' runs every minute
describe crontab('myuser').commands('/home/myuser/build.sh') do
its('hours') { should cmp '*' }
its('minutes') { should cmp '*' }
end
### Test that the logged-in user's crontab has no tasks set to run on every hour and every minute
describe crontab.where({'hour' => '*', 'minute' => '*'}) do
its('entries.length') { should cmp '0' }
end
### Test that the logged-in user's crontab contains a single command that matches a mattern
describe crontab.where { command =~ /a partial command string/ } do
its('entries.length') { should cmp 1 }
end
### Test a special time string (i.e., @yearly /root/anual_report.sh)
describe crontab.commands('/root/anual_report.sh') do
its('hours') { should cmp '0' }
its('minutes') { should cmp '0' }
its('days') { should cmp '1' }
its('months') { should cmp '1' }
end
### Test @reboot case
describe crontab.commands('/root/reboot.sh') do
its('hours') { should cmp '-1' }
its('minutes') { should cmp '-1' }
end
<br>
## Property Examples
### Test a special time string
describe crontab do
its('minutes') { should cmp '0' }
its('hours') { should cmp '0' }
its('days') { should cmp '1' }
its('weekdays') { should cmp '1' }
its('user') { should include 'username'}
its('commands') { should include '/some/scheduled/task.sh' }
end
InSpec will automatically interpret crontab-supported special time strings. For example, a crontab entry set to run `@yearly` can be tested as if the entry was manually configured to run on January 1, 12 AM.
<br>
## Matchers
For a full list of available matchers, please visit our [matchers page](https://www.inspec.io/docs/reference/matchers/).