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PowerShell (POSH) is a a task automation command-line shell and scripting language created by Microsoft. It became part of the FOSS community in 2016 and is now available across Windows, Linux, and macOS

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PowerShell Script to Detect Code Impacted by the Invoke-WebRequest Breaking Change (programming.dev)

submitted 11 months ago by pwshguy@programming.dev to c/powershell@programming.dev

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The recent breaking change to Invoke-WebRequest in Windows PowerShell 5.1 has the potential to affect a lot of automation, especially in older environments. To make it easier to assess the impact, I published a script called Search-CmdletParameterUsage.ps1.

This tool recursively scans your scripts and modules for any cmdlet + parameter usage. While I built it to identify places where Invoke-WebRequest is not using -UseBasicParsing, it works generically for any cmdlet you're concerned about.

If you maintain large codebases or inherited automation, this can save a ton of manual review.

Script: https://gist.github.com/mdowst/9d00ff37ea79dcbfb98e6de580cbedbe

KB on the breaking change: https://support.microsoft.com/en-us/topic/powershell-5-1-preventing-script-execution-from-web-content-7cb95559-655e-43fd-a8bd-ceef2406b705

Happy scripting! And good luck hunting down those IWR calls.

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