powershellを使用して特定の日付に作成されたファイルを解凍する方法は？

Question

特定の日付に作成されたすべてのファイルを圧縮するためのスクリプトが用意されています。

Add-Type -AssemblyName System.IO.Compression.FileSystem 

$logfolder = "c:\users\riteshthakur\desktop\abc" 
$startdate = "20161205" 
$enddate = "20161205" 

[System.IO.Compression.ZipArchive] $arch = [System.IO.Compression.ZipFile]::Open('c:\users\riteshthakur\desktop\arch.zip', [System.IO.Compression.ZipArchiveMode]::Update) 

Get-ChildItem - path $logFolder | 
Where-Object {$_.CreationDate -gt $startDate -and $_.CreationDate -lt $endDate} | 
foreach{[System.IO.Compression.ZipFileExtensions]::CreateEntryFromFile($arch,$_.FullName,$_.Name)} 
# archive will be updated with files after you close it. normally, in C#, you would use "using ZipArchvie arch = new ZipFile" and object would be disposed upon exiting "using" block. here you have to dispose manually: 
$arch.Dispose() 

私はこのスクリプトを実行していますが、これは投げている：「タイプを追加することはできませんアセンブリ 『System.IO.Compression.FileSystem』が見つかりませんでした。」

助けてください。ここ

Answer 1

https://msdn.microsoft.com/en-us/library/system.io.compression.zipfile(v=vs.110).aspxによると、そのアセンブリは、.NET Framework 4.5になるまで利用できるようになっていませんでした。インストールした.NET Frameworkのバージョンは？ 4.5以降の場合は、再インストール/修復が必要な場合があります。

Answer 2

Originally published by Bryan C. O'Connellは、郵便番号の関数である。次のように

# Purpose: Creates a .zip file of a file or folder. 
# Params: 
# -target: The file or folder you would like to zip. 
# 
# -zip_to: The location where the zip file will be created. If an old version 
# exists, it will be deleted. 
# 
# -compression (optional): Sets the compression level for your zip file. Options: 
# a. fast - Higher process speed, larger file size (default option). 
# b. small - Slower process speed, smaller file size. 
# c. none - Fastest process speed, largest file size. 
# 
# -add_timestamp (optional): Applies a timestamp to the .zip file name. 
# By default, no timestamp is used. 
# 
# -confirm (optional): When provided, indicates that you would like to be 
# prompted when the zip process is finished. 
# 
# |Info| 

[CmdletBinding()] 
Param (
    [Parameter(Mandatory=$true,Position=0)] 
    [string]$target, 

    [Parameter(Mandatory=$true,Position=1)] 
    [string]$zip_to, 

    [Parameter(Mandatory=$false,Position=2)] 
    [ValidateSet("fast","small","none")] 
    [string]$compression, 

    [Parameter(Mandatory=$false,Position=3)] 
    [bool]$timestamp, 

    [Parameter(Mandatory=$false,Position=4)] 
    [bool]$confirm 
) 

#-----------------------------------------------------------------------------# 
function DeleteFileOrFolder 
{ Param([string]$PathToItem) 

    if (Test-Path $PathToItem) 
    { 
    Remove-Item ($PathToItem) -Force -Recurse; 
    } 
} 

function DetermineCompressionLevel{ 
[Reflection.Assembly]::LoadFile('C:\WINDOWS\System32\zipfldr.dll') 
Add-Type -Assembly System.IO.Compression.FileSystem 
    $CompressionToUse = $null; 

    switch($compression) 
    { 
    "fast" {$CompressionToUse = [System.IO.Compression.CompressionLevel]::Fastest} 
    "small" {$CompressionToUse = [System.IO.Compression.CompressionLevel]::Optimal} 
    "none" {$CompressionToUse = [System.IO.Compression.CompressionLevel]::NoCompression} 
    default {$CompressionToUse = [System.IO.Compression.CompressionLevel]::Fastest} 
    } 

    return $CompressionToUse; 
} 

#-----------------------------------------------------------------------------# 
Write-Output "Starting zip process..."; 

if ((Get-Item $target).PSIsContainer) 
{ 
    $zip_to = ($zip_to + "\" + (Split-Path $target -Leaf) + ".zip"); 
} 
else{ 

    #So, the CreateFromDirectory function below will only operate on a $target 
    #that's a Folder, which means some additional steps are needed to create a 
    #new folder and move the target file into it before attempting the zip process. 
    $FileName = [System.IO.Path]::GetFileNameWithoutExtension($target); 
    $NewFolderName = ($zip_to + "\" + $FileName) 

    DeleteFileOrFolder($NewFolderName); 

    md -Path $NewFolderName; 
    Copy-Item ($target) $NewFolderName; 

    $target = $NewFolderName; 
    $zip_to = $NewFolderName + ".zip"; 
} 

DeleteFileOrFolder($zip_to); 

if ($timestamp) 
{ 
    $TimeInfo = New-Object System.Globalization.DateTimeFormatInfo; 
    $CurrentTimestamp = Get-Date -Format $TimeInfo.SortableDateTimePattern; 
    $CurrentTimestamp = $CurrentTimestamp.Replace(":", "-"); 
    $zip_to = $zip_to.Replace(".zip", ("-" + $CurrentTimestamp + ".zip")); 
} 

$Compression_Level = (DetermineCompressionLevel); 
$IncludeBaseFolder = $false; 

[Reflection.Assembly]::LoadWithPartialName("System.IO.Compression.FileSystem"); 
[System.IO.Compression.ZipFile]::CreateFromDirectory($target, $zip_to, $Compression_Level, $IncludeBaseFolder); 

Write-Output "Zip process complete."; 

if ($confirm) 
{ 
    write-Output "Press any key to quit ..."; 
    $quit = $host.UI.RawUI.ReadKey("NoEcho,IncludeKeyDown"); 
} 

はこれを使用します。

zip.ps1 -target "C:\Projects\test" -zip_to "C:\projects\test2" [-compression fast] [-timestamp] [-confirm]