PowerShell/Scripts/set-timer.ps1

#!/snap/bin/powershell
<#
.SYNTAX         ./set-timer.ps1 [<seconds>]
.DESCRIPTION	sets a timer for a countdown
.LINK		https://github.com/fleschutz/PowerShell
.NOTES		Author:	Markus Fleschutz / License: CC0
#>

param([int]$Seconds = 0)

try {
	if ($Seconds -eq 0 ) {
		[int]$Seconds = read-host "Enter number of seconds"
	}

	for ($i = $Seconds; $i -gt 0; $i--) {
		clear-host
		./write-big "T-$i seconds"
		start-sleep -s 1
	}
	write-output "OK - $Seconds seconds countdown finished"
	exit 0
} catch {
	write-error "ERROR in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
	exit 1
}