Mastering PowerShell Scripting - Fifth Edition

23

Debugging

Debugging is the art of discovering, isolating, and fixing bugs in code. The complexity of debugging increases with the complexity of the code.

To a degree, the need to debug complex scripts can be reduced by adopting certain development strategies:

• Scripts should be broken down into discreet units by using functions.
• Each unit of code should strive to excel at one thing only.
• Each unit of code should strive to be as short as it can reasonably be without sacrificing clarity.
• Tests should be developed to ensure that each unit of code acts as it should.
• Use commands such as Write-Verbose or Write-Debug to write identifiable messages, perhaps including values of variables.

Debugging is an inevitable part of the development process. ...