Mastering Windows PowerShell Scripting - Second Edition

Error and ErrorVariable

The Error variable is a collection (ArrayList) of handled and unhandled errors raised in the PowerShell session.

Testing the content of error variables:Testing the content of an error variable is not a robust way to test for error conditions. As the variable fills with both handled and unhandled errors, it is indeterminate at best. Error variables continue to have value when debugging less obvious problems with code.

The collection can be cleared using:

$Error.Clear() 

The most recent error is first in the list:

$Error[0] 

Errors will be added to the collection except when the ErrorAction is set to Ignore.

The ErrorVariable parameter can be used to name a variable that should be used as well as Error for a specific ...