Check-Drives

Checks the drive space

Script

param([int64]$minLevel = 5GB)

function Bytes2String { param([int64]$bytes)
        if ($bytes -lt 1KB) { return "$bytes bytes" }
        if ($bytes -lt 1MB) { return '{0:N0}KB' -f ($bytes / 1KB) }
        if ($bytes -lt 1GB) { return '{0:N0}MB' -f ($bytes / 1MB) }
        if ($bytes -lt 1TB) { return '{0:N0}GB' -f ($bytes / 1GB) }
        if ($bytes -lt 1PB) { return '{0:N0}TB' -f ($bytes / 1TB) }
        return '{0:N0}GB' -f ($bytes / 1PB)
}

try {
	Write-Progress "Querying drives..."
	$drives = Get-PSDrive -PSProvider FileSystem
	Write-Progress -completed "Done."
	$status = "?"
	$reply = "Drive "
	foreach($drive in $drives) {
		$details = (Get-PSDrive $drive.Name)
		if ($IsLinux) { $name = $drive.Name } else { $name = $drive.Name + ":" }
		[int64]$free = $details.Free
 		[int64]$used = $details.Used
		[int64]$total = ($used + $free)
		if ($reply -ne "Drive ") { $reply += ", " }
		if ($total -eq 0) {
			$reply += "$name is empty"
		} elseif ($free -eq 0) {
			$status = "??"
			$reply += "$name with ($(Bytes2String $total)) is FULL"
		} elseif ($free -lt $minLevel) {
			$status = "??"
			$reply += "$name nearly full ($(Bytes2String $free) of $(Bytes2String $total) left)"
		} else {
			[int64]$percent = ($used * 100) / $total
			$reply += "$name uses $percent% of $(Bytes2String $total) ($(Bytes2String $free) free)"
		}
	}
	Write-Host "$status $reply"
	exit 0 # success
} catch {
	"?? ERROR: $($Error[0]) (script line $($_.InvocationInfo.ScriptLineNumber))"
	exit 1
}

Customize

minLevel int64

Specifies the minimum warning level (5GB by default)