How do you call a function in a PowerShell script?

How do you call a function in a PowerShell script?

A function in PowerShell is declared with the function keyword followed by the function name and then an open and closing curly brace. The code that the function will execute is contained within those curly braces. The function shown is a simple example that returns the version of PowerShell.

What is a function in PowerShell?

A function is a list of PowerShell statements that has a name that you assign. Function parameters can be read from the command line or from the pipeline. Functions can return values that can be displayed, assigned to variables, or passed to other functions or cmdlets.

How do I add a function in PowerShell?

Adding additional functionality to an existing function

1. Start the Windows PowerShell ISE.
2. Open the Get-FilesByDate.
3. Create an array of default file types for the $filetypes input variable.
4. Use the [Parameter(Mandatory=$true)] parameter tag to make the $month parameter mandatory.
5. Save and run the function.

How do I call a PowerShell function from another PowerShell script?

If you want to execute a function from another PowerShell script file, you can “dot-source” the file. The “.” is a special operator in PowerShell that can load another PowerShell script file en import all code in it.

Where do PowerShell functions go?

Now every time you open your PowerShell console the function will be available. If you wish to use the function in a script, place the function in the script above the sections where you need to use it. Typically this will be towards the top.

Where are PowerShell functions stored?

To make your function available for all users save it in ProgramFiles\WindowsPowerShell\Modules\Gateway. This means, that you have to create a folder there, which has the same name as your file.

How do you pass a variable to a function in PowerShell?

You can pass variables to functions by reference or by value. When you pass a variable by value, you are passing a copy of the data. In the following example, the function changes the value of the variable passed to it. In PowerShell, integers are value types so they are passed by value.

How do I save and run a function in PowerShell?

Save your Function as a Script Module In PowerShell ISE click on File and select Save. To make your function available for all users save it in ProgramFiles\WindowsPowerShell\Modules\Gateway. This means, that you have to create a folder there, which has the same name as your file. Select Type psm1.

How do I load a PowerShell function into memory?

When a function in a script isn’t part of a module, the only way to load it into memory is to dot-source the . PS1 file that it’s saved in.

How do you use if statements in PowerShell?

Syntax. if(Boolean_expression 1) { // Executes when the Boolean expression 1 is true }elseif(Boolean_expression 2) { // Executes when the Boolean expression 2 is true }elseif(Boolean_expression 3) { // Executes when the Boolean expression 3 is true }else { // Executes when the none of the above condition is true. }

How do I create a function in PowerShell?

To create a function in Windows PowerShell, you begin with the Function keyword, followed by the name of the function. As a best practice, use the Windows PowerShell verb-noun combination when creating functions. Pick the verb from the standard list of Windows PowerShell verbs to make your functions easier to remember.

How do I run a script on PowerShell?

You can use the following methods to run a Windows PowerShell script: Use the dot and the backslash (.\\) to indicate the local directory. Specify the full path of the script. Specify the path of the script, but omit the extension. Use the Invoke-Expression cmdlet to run a script. Use double quotation marks for any paths that include spaces.

What are the commands for PowerShell?

Windows PowerShell Cmdlets. A cmdlet (pronounced “command-let”) is a single-feature command that manipulates objects in Windows PowerShell. You can recognize cmdlets by their name format — a verb and noun separated by a dash (-), such as Get-Help, Get-Process, and Start-Service.

How to call function in PowerShell?

How to call a function: The inline approach The easiest way to work with a PowerShell function is to include it in the script . The term for this is an inline function. Wherever the code is for the function, it must go above the first line that calls the function.