expect

Watch: expect

watch.expect raises when a value is none of the expected ones: here, the target a Linux boots into, expected multi-user.target on a server.

How to read it

• array('warning' => array('multi-user.target')): the list of the values expected at this level; any other raises it.
• Without options, watch.expect('wrong-target', …, 'target') raises nothing until the administrator writes the expected values on the probe.
• The output can be a text or a number.

To adapt it

• A desktop host boots into graphical.target: the administrator adds it on its probe.
• Expected values that differ from one host to the next (a version, a model): leave the list empty in the code, and let the probe say it.