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学ぶ Working with Variables | Getting Started with PowerShell
PowerShell Basics

bookWorking with Variables

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# Defining and assigning values to variables in PowerShell $greeting = "Hello, PowerShell!" $number = 42 $isEnabled = $true
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Variables in PowerShell allow you to store and reuse data throughout your scripts. When naming variables, follow these rules:

  • Start the name with a dollar sign ($);
  • The first character after $ must be a letter or underscore;
  • Use only letters, numbers, and underscores in the name;
  • Avoid spaces and special characters;
  • Variable names are not case-sensitive. Variable scope determines where a variable can be accessed. Most variables you create are local to your script or session, but you can specify other scopes like global: or script: if required.
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# Variable interpolation in PowerShell strings $name = "Sam" $message = "Welcome, $name!" Write-Output $message # Output: Welcome, Sam!
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1. Which of the following is a valid variable name in PowerShell?

2. What is variable interpolation in PowerShell strings?

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Which of the following is a valid variable name in PowerShell?

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What is variable interpolation in PowerShell strings?

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