Übungen Drives

Diverse kleinere PowerShell-Codes zur weiteren Einstimmung.

temp Ordner aufräumen - altes Zeug (hier: 30 Tage+) entfernen:

$cutoff = (Get-Date) - (New-TimeSpan -Days 30)
$before = (Get-ChildItem $env:temp | Measure-Object Length -Sum).Sum
Get-ChildItem $env:temp | Where-Object { $_.Length -ne $null } |
    Where-Object { $_.LastWriteTime -lt $cutoff } |
    Remove-Item -Force -ErrorAction SilentlyContinue -Recurse -WhatIf
# simulation only, no files and folders will be deleted
# replace -WhatIf with -Confirm to confirm each delete
# remove -WhatIf altogether to delete without confirmation (at your own risk)
$after = (Get-ChildItem $env:temp | Measure-Object Length -Sum).Sum
$freed = $before - $after
"Cleanup freed {0:0.0} MB." -f ($freed/1MB)

Größe eines Ordners ermitteln: (hier Download)

$folder = "$env:userprofile\Downloads"
Get-ChildItem -Path $folder -Recurse -Force -ea 0 | Measure-Object -Property Length -Sum | ForEach-Object {
    $sum = $_.Sum / 1MB
        "Der Download-Ordner enthaelt derzeit {0:#,##0.0} MB storage." -f $sum
        }

Größen Min vs. Max

Get-ChildItem $env:windir |
    Measure-Object -Property Length -Minimum -Maximum |
    Select-Object -Property Minimum,Maximum

Speicherzeit alt vs. neu

Get-ChildItem $env:windir |
    Measure-Object -Property LastWriteTime -Minimum -Maximum |
    Select-Object -Property Minimum,Maximum

Dateien umbenennen - Anm.: die Win8/10 Screenshots (Shortcut: Win+Druck) haben Leerzeichen!

$global:i = 1
$path = "$env:userprofile\Pictures\Screenshots"
Get-ChildItem -Path $path -Filter *.png |
    Rename-Item -NewName { "screnshot_$i.png"; $global:i++}

1GB Datei in Sekundenbruchteil

$path = "$env:temp\testfile.txt"
$file = [io.file]::Create($path)
$file.SetLength(1gb)
$file.Close()
Get-Item $path

Alle Code-Snippets - wie immer ;-) - ohne Gewähr!