<# .SYNOPSIS Checks the swap space .DESCRIPTION This PowerShell script queries the current status of the swap space and prints it. .PARAMETER minLevel Specifies the minimum level in MB (10 MB by default) .EXAMPLE PS> ./check-swap-space.ps1 ✅ Swap space uses 1GB (21%) of 5GB .LINK https://github.com/fleschutz/PowerShell .NOTES Author: Markus Fleschutz | License: CC0 #> param([int]$minLevel = 10) function MB2String { param([int64]$bytes) if ($bytes -lt 1024) { return "$($bytes)MB" } $bytes /= 1024 if ($bytes -lt 1024) { return "$($bytes)GB" } $bytes /= 1024 if ($bytes -lt 1024) { return "$($bytes)TB" } $bytes /= 1024 if ($bytes -lt 1024) { return "$($bytes)PB" } $bytes /= 1024 if ($bytes -lt 1024) { return "$($bytes)EB" } } try { if ($IsLinux) { $Result = $(free --mega | grep Swap:) [int64]$total = $Result.subString(5,14) [int64]$used = $Result.substring(20,13) [int64]$free = $Result.substring(32,11) } else { $items = Get-WmiObject -class "Win32_PageFileUsage" -namespace "root\CIMV2" -computername localhost [int64]$total = [int64]$used = 0 foreach ($item in $items) { $total += $item.AllocatedBaseSize $used += $item.CurrentUsage } [int64]$free = ($total - $used) } if ($total -eq 0) { Write-Output "⚠️ No swap space configured" } elseif ($free -eq 0) { Write-Output "⚠️ Swap space with $(MB2String $total) is FULL !!!" } elseif ($free -lt $minLevel) { Write-Output "⚠️ Swap space has only $(MB2String $free) of $(MB2String $total) left!" } elseif ($used -lt 3) { Write-Output "✅ Swap space has $(MB2String $total) reserved" } else { [int64]$percent = ($used * 100) / $total Write-Output "✅ Swap space uses $(MB2String $used) ($percent%) of $(MB2String $total)" } exit 0 # success } catch { "⚠️ Error in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])" exit 1 }