<# .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 21% of 1GB - 1005MB free .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 of $(MB2String $total) is full" } elseif ($free -lt $minLevel) { Write-Output "⚠️ Swap space has only $(MB2String $free) of $(MB2String $total) free" } elseif ($used -lt 3) { Write-Output "✅ Swap space unused - full $(MB2String $free) free" } else { [int64]$percent = ($used * 100) / $total Write-Output "✅ Swap space at $percent% of $(MB2String $total) - $(MB2String $free) free" } exit 0 # success } catch { "⚠️ Error in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])" exit 1 }