The document explains how to create and use functions in PowerShell, highlighting their role in interfacing between code and users. It also introduces advanced functions, which utilize the [cmdletbinding] attribute to gain enhanced capabilities akin to cmdlets. These functions allow for defining parameters and providing help for better usability.

1. Day 9

2. Functions in PowerShell
• Functions provide the interface between your code and the user.They
can define parameters, parameter types, and even provide help,
much like cmdlets. A block of code may be contained within a
function for easy re-use.To create a function, call the function
keyword followed by a name for the function, then include your code
inside a pair of curly braces
Function <function_name> (function_parameters) { <function_body> }

3. Advanced Functions in PowerShell
• Advanced functions - advanced functions gain access to common
Windows PowerShell parameters and other stuff that makes the
function work like aWindows PowerShell cmdlet.The secret? It is the
use of the [cmdletbinding] tag.

5. Thank you!