How to determine if Windows shows file extensions by PowerShell


This sample provides a script for IT pro or windows customers to quickly determine if Windows shows file extensions by PowerShell.


Users might have an option to display/hide file extensions when viewing files on Windows. They only need to call the script, and then they will find the current setting of this option.


Input the name of the script, and option of display/hide file extensions will be shown on the console as the below screenshot.



$HideFileExt = (Get-ItemProperty -LiteralPath 'HKCU:\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced' -ErrorAction Stop).'HideFileExt' 
IF($HideFileExt -eq 0 ){"Show extensions for know file types" } ELSE {"Hidden extensions for know file types"}


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