PowerShell in Practice

Appendix B. Modules and advanced functions

Functions have been a useful part of PowerShell v1, in that they allow us to reuse code and cut down the size of our scripts by avoiding repetition. We can also save the functions into memory so that they’re available from within our PowerShell session. It’s possible to organize functions into libraries and perform a bulk load. These functions can be used from the command line or within scripts. The structure of functions was discussed in section 2.4.5.

PowerShell v2 provides a new way of organizing functions into modules. A module can be a collection of functions or even a compiled DLL. Windows 7 and Windows Server 2008 supply their PowerShell functionality as modules, as we saw in chapter 15. We’ll ...