Check-DriveSpace

Checks the drive space

Script

param([string]$driveName = "", [int64]$minLevel = 10 * 1000 * 1000) # GB

function Bytes2String { param([int64]$bytes)
        if ($bytes -lt 1000) { return "$bytes bytes" }
        $bytes /= 1000
        if ($bytes -lt 1000) { return "$($bytes)KB" }
        $bytes /= 1000
        if ($bytes -lt 1000) { return "$($bytes)MB" }
        $bytes /= 1000
        if ($bytes -lt 1000) { return "$($bytes)GB" }
        $bytes /= 1000
        if ($bytes -lt 1000) { return "$($bytes)TB" }
        $bytes /= 1000
        return "$($bytes)PB"
}

try {
	if ($driveName -eq "" ) { $driveName = Read-Host "Enter the drive name to check" }

	$details = (Get-PSDrive $driveName)
        if (-not $IsLinux) { $driveName = $driveName + ":" }
	[int64]$free = $details.Free
        [int64]$used = $details.Used
        [int64]$total = ($used + $free)

	if ($total -eq 0) {
		Write-Host "? Drive $driveName is empty"
        } elseif ($free -eq 0) {
                Write-Host "?? Drive $driveName with $(Bytes2String $total) is FULL"
        } elseif ($free -lt $minLevel) {
                Write-Host "?? Drive $driveName with $(Bytes2String $total) is nearly full, $(Bytes2String $free) free"
        } else {
        	[int64]$percent = ($used * 100) / $total
                Write-Host "? Drive $driveName uses $percent% of $(Bytes2String $total) ($(Bytes2String $free) free)"
        }
	exit 0 # success
} catch {
	"?? ERROR: $($Error[0]) (script line $($_.InvocationInfo.ScriptLineNumber))"
	exit 1
}

Customize

driveName string

Specifies the drive name to check (e.g. "C")

minLevel int64

Specifies the minimum level in bytes (10GB by default)