Added set-timer.ps1

Scripts/set-timer.ps1

@@ -0,0 +1,24 @@
+#!/snap/bin/powershell
+
+# Syntax:       ./set-timer.ps1 [<seconds>]
+# Description:	sets a timer for a countdown
+# Author:	Markus Fleschutz
+# Source:	github.com/fleschutz/PowerShell
+# License:	CC0
+
+param([int]$Seconds)
+if ($Seconds -eq 0 ) {
+	[int]$Seconds = read-host "Enter number of seconds"
+}
+
+try {
+	for ($i = $Seconds; $i -gt 0; $i--) {
+		write-progress "$i seconds"
+		start-sleep -s 1
+	}
+	write-host "OK - $Seconds seconds countdown finished"
+	exit 0
+} catch {
+	write-error "ERROR in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
+	exit 1
+}