By defining Microsoft PowerShell functions within PowerShell modules, you can organize your scripts, avoid duplicating code, ...
If you are building PowerShell longer than a few lines, it is good practice to break up your code into reusable snippets. This way you can only call the code snippet over and over instead of ...
Are all of the default PowerShell cmdlets exactly the way you like them to be? Do they have all of the parameters you think should be standard and have no extras? Probably not. We all have our quirks ...