PowerShell Functions

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The document discusses PowerShell functions including their structure, guidelines, input/output parameters, scope, use in pipelines, and comment-based help. PowerShell functions allow reusable blocks of code to be defined and behave similar to cmdlets. They can take parameters, return output, and be used in scripts, profiles, or modules. Functions provide a way to encapsulate and reuse code along with features like parameter handling and scoping rules.

PowerShell Functions Presented by Mike Pfeiffer http://www.AZPoSH.com

Agenda ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

What is a PowerShell Function? ,[object Object],[object Object],[object Object]

Function Guidelines ,[object Object],[object Object],[object Object],[object Object]

Input Parameters ,[object Object],[object Object],[object Object],[object Object],[object Object]

Output ,[object Object],[object Object],[object Object]

Scope ,[object Object],[object Object],[object Object]

Functions in the Pipeline ,[object Object],[object Object]

Parameter Attributes Parameter Attribute Declaration (MSDN): http://bit.ly/bzGu34

Resources ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Shell: A Command-Line Interpretor that connects a user to Operating System and allows to execute the commands or by creating text script. Process: Any task that a user run in the system is called a process. A process is little more complex than just a task. File: It resides on hard disk (hdd) and contains data owned by a user. X-windows aka windows: A mode of Linux where screen (monitor) can be split in small “parts” called windows, that allow a user to do several things at the same time and/or switch from one task to another easily and view graphics in a nice way. Text terminal: A monitor that has only the capability of displaying text stuff, no graphics or a very basic graphics display. Session: Time between logging on and logging out of the system.

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