Added Files

Powershell/Scripts/poweroff.ps1

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+<#
+.SYNTAX       poweroff.ps1
+.DESCRIPTION  halts the local computer (needs admin rights)
+.LINK         https://github.com/fleschutz/PowerShell
+.NOTES        Author: Markus Fleschutz / License: CC0
+#>
+
+#Requires -RunAsAdministrator
+
+try {
+	Stop-Computer
+	exit 0
+} catch {
+	write-error "⚠️ Error in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
+	exit 1
+}