PowerShell/docs/check-drives.md

The *check-drives.ps1* Script
===========================

This PowerShell script queries the free space of all drives and prints it.

Parameters
----------
```powershell
/home/markus/Repos/PowerShell/scripts/check-drives.ps1 [[-minLevel] <Int64>] [<CommonParameters>]

-minLevel <Int64>
    Specifies the minimum warning level (5GB by default)
    
    Required?                    false
    Position?                    1
    Default value                5368709120
    Accept pipeline input?       false
    Accept wildcard characters?  false

[<CommonParameters>]
    This script supports the common parameters: Verbose, Debug, ErrorAction, ErrorVariable, WarningAction, 
    WarningVariable, OutBuffer, PipelineVariable, and OutVariable.
```

Example
-------
```powershell
PS> ./check-drives.ps1
✅ Drive C: uses 489GB (53%) of 930GB, D: uses 3TB (87%) of 4TB, E: is empty

```

Notes
-----
Author: Markus Fleschutz | License: CC0

Related Links
-------------
https://github.com/fleschutz/PowerShell

Script Content
--------------
```powershell
<#
.SYNOPSIS
	Checks the drive space
.DESCRIPTION
	This PowerShell script queries the free space of all drives and prints it.
.PARAMETER minLevel
	Specifies the minimum warning level (5GB by default)
.EXAMPLE
	PS> ./check-drives.ps1
	✅ Drive C: uses 489GB (53%) of 930GB, D: uses 3TB (87%) of 4TB, E: is empty
.LINK
	https://github.com/fleschutz/PowerShell
.NOTES
	Author: Markus Fleschutz | License: CC0
#>

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 $(Bytes2String $used) ($percent%) of $(Bytes2String $total)"
		}
	}
	Write-Host "$status $reply"
	exit 0 # success
} catch {
	"⚠️ Error in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
	exit 1
}
```

*(generated by convert-ps2md.ps1 as of 11/20/2024 11:51:51)*