PowerShell/docs/check-drives.md

Script: check-drives.ps1

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

Parameters

PS> ./check-drives.ps1 [[-minLevel] <Int64>] [<CommonParameters>]

-minLevel <Int64>
    Specifies the minimum warning level (10GB by default)
    
    Required?                    false
    Position?                    1
    Default value                10
    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

PS> ./check-drives.ps1
✅ Drive C: uses 49% of 1TB - 512GB free
✅ Drive D: uses 84% of 4TB - 641GB free

Notes

Author: Markus Fleschutz | License: CC0

Related Links

https://github.com/fleschutz/PowerShell

Script Content

<#
.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 (10GB by default)
.EXAMPLE
	PS> ./check-drives.ps1
	✅ Drive C: uses 49% of 1TB - 512GB free
	✅ Drive D: uses 84% of 4TB - 641GB free
.LINK
	https://github.com/fleschutz/PowerShell
.NOTES
	Author: Markus Fleschutz | License: CC0
#>

param([int64]$minLevel = 10) # 10 GB minimum

function Bytes2String { param([int64]$number)
        if ($number -lt 1KB) { return "$number bytes" }
        if ($number -lt 1MB) { return '{0:N0}KB' -f ($number / 1KB) }
        if ($number -lt 1GB) { return '{0:N0}MB' -f ($number / 1MB) }
        if ($number -lt 1TB) { return '{0:N0}GB' -f ($number / 1GB) }
        if ($number -lt 1PB) { return '{0:N0}TB' -f ($number / 1TB) }
        return '{0:N0}GB' -f ($number / 1PB)
}

try {
	Write-Progress "Querying drives..."
	$drives = Get-PSDrive -PSProvider FileSystem
	$minLevel *= 1GB
	Write-Progress -completed " "
	foreach($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 ($total -eq 0) {
			Write-Host "✅ Drive $name is empty"
		} elseif ($free -eq 0) {
			Write-Host "⚠️ Drive $name with $(Bytes2String $total) is full"
		} elseif ($free -lt $minLevel) {
			Write-Host "⚠️ Drive $name with $(Bytes2String $total) is nearly full, $(Bytes2String $free) free"
		} else {
			[int64]$percent = ($used * 100) / $total
			Write-Host "✅ Drive $name uses $percent% of $(Bytes2String $total) - $(Bytes2String $free) free"
		}
	}
	exit 0 # success
} catch {
	"⚠️ Error in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
	exit 1
}

(generated by convert-ps2md.ps1 using the comment-based help of check-drives.ps1 as of 08/15/2024 09:50:45)