Mastering PowerShell Scripting - Fourth Edition

17

Scripts, Functions, and Script Blocks

In PowerShell, scripts and functions are commands. They have overlapping capabilities and often only differ by common use.

Scripts tend to be used to implement well-defined processes; such scripts often run on a schedule of some kind. A script may include functions or run other scripts, and a script will often use commands from other modules. A script is convenient as it consists of a single .ps1 file.

You can also use a function to implement a single process in the same way as a script. The function might be part of a script, implementing a process, or part of a module. When automating a process, writing a module to host a function might be regarded as slightly less convenient and less simple than writing ...