powershell-custom Functions (i) the first custom function

In PowerShell, we can customize a function to implement a specific function to achieve the purpose of reuse. Prepare to share it with a small series from simple to complex.

First, we write a very simple custom function.

Goal:

After entering the name and age, directly in the show how old this year.

Example:

Function test-function ($Name, $Age = "18")
{
Write-host "$Name $Age year old."
}

Description

1. Declare it as a function

2. Test-function is our name for this custom function.

3. Next () parentheses to define the parameters we need to use

   1. Define $name and $age two parameters

   2. We can assign an initial value to the parameter directly here.

4. Then write the code block in {} to implement the functionality we need.

Operation Result:

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1. From the running results can be seen, we have $name and $age two parameters can be used, between the parameters with "," comma separated

2. When we do not specify $age, we can see that it shows the default value of 18.

3. We can also re-assign the $age, and the result changes after you reassign it to 20.

Custom functions are a great way to reuse a piece of code. Of course, custom functions also include more and more complex content. It will be updated slowly.

This article from "Puma pot" blog, declined reprint!

powershell-custom Functions (i) the first custom function