PowerShell for Sysadmins

5ERROR HANDLING

You’ve seen how to use variables and control flow structures to write flexible code that can respond to the imperfections of the real world—servers that aren’t up when they should be, files that are in the wrong place, and the like. Some of these things you know to expect and can handle accordingly. But you’ll never be able to anticipate every error. There’s always something that will break your code. The best you can do is write code that breaks responsibly.

That’s the basic premise behind error handling, the techniques that developers use to ensure that their code expects and takes care of—or handles—errors. In this chapter, ...