Added Files

Powershell/Scripts/list-environment-variables.ps1

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+<#
+.SYNTAX       list-environment-variables.ps1
+.DESCRIPTION  lists all environment variables
+.LINK         https://github.com/fleschutz/PowerShell
+.NOTES        Author: Markus Fleschutz / License: CC0
+#>
+
+try {
+	Get-ChildItem env:
+	exit 0
+} catch {
+	write-error "⚠️ Error in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
+	exit 1
+}