Learn how to create reusable PowerShell functions, implement best practices, and avoid common pitfalls in function design, error handling, and parameter validation.

5 days ago · Describes how to create and use functions in PowerShell. Long description. A function is a list of PowerShell statements that has a name that you assign. When you run a function, you type the function name. PowerShell defines two kinds of functions: A function is a block of code that can be called by name. It can take input and return output.

Mar 27, 2025 · You can open and edit Windows PowerShell files in the Script Pane. Specific file types of interest in Windows PowerShell are script files (.ps1), script data files (.psd1), and script module files (.psm1). These file types are syntax colored in the Script Pane editor.

Jan 23, 2025 · The PowerShell call operator (&) lets you run commands that are stored in variables and represented by strings or script blocks. You can use this to run any native command or PowerShell command. This is useful in a script when you need to dynamically construct the command-line parameters for a native command.

In this chapter, you learned how to turn your functions into a script module in PowerShell. You also explored best practices for creating script modules, including the importance of adding a module manifest to define metadata and manage exported commands.

PowerShell runs the script block immediately in a child scope of the current scope. Before using Invoke-Command to run commands on a remote computer, read about_Remote . Starting with PowerShell 6.0 you can use Secure Shell (SSH) to establish a connection to and invoke commands on remote computers.

Mar 24, 2025 · The collection of statements can be enclosed in braces ({}), defined as a function, or saved in a script file. A script block can return values and accept parameters and arguments. Syntactically, a script block is a statement list in braces, as shown in the following syntax: {<statement list>}

Jan 22, 2025 · A PowerShell Azure function (function) is represented as a PowerShell script that executes when triggered. Each function script has a related function.json file that defines how the function behaves, such as how it is triggered and its input and output parameters.

The call stack is the list of functions that have called each other. When a function is called, it gets added to the stack or the top of the list. When the function exits or returns, it is removed from the stack.

Nov 2, 2022 · generally if you want to call a function we can call like below. . .\Test-FunctionDefinition.ps1 . but i want to understand how to call this powershell function( added as azure automation runbook) in existing runbooks within azure automation account.