<# .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 GB (10 GB by default) .EXAMPLE PS> ./check-swap-space.ps1 ✅ Swap space has 748MB free (42% of 1GB used) .LINK https://github.com/fleschutz/PowerShell .NOTES Author: Markus Fleschutz | License: CC0 #> param([int]$minLevel = 10) function MB2String { param([int64]$bytes) 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" } $bytes /= 1000 if ($bytes -lt 1000) { return "$($bytes)PB" } $bytes /= 1000 if ($bytes -lt 1000) { 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 5) { Write-Output "✅ Swap space has all $(MB2String $free) free" } else { [int64]$percent = ($used * 100) / $total Write-Output "✅ Swap space has $(MB2String $free) free ($percent% of $(MB2String $total) used)" } exit 0 # success } catch { "⚠️ Error in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])" exit 1 }