PowerTip: Two Quick Ways to Check Variables in PowerShell

Doctor Scripto

Summary: Check for undeclared variables.

Hey, Scripting Guy! Question How can I cause the script to generate an error if a variable has not been declared?

Hey, Scripting Guy! Answer Here are a couple of ways to do this with Windows PowerShell.

a. Place set-psdebug –strict anywhere in the script. Any nondeclared variable will generate an error when accessed.

b. Use Set-StrictMode –Version latest



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