PowerShell

PowerShellArchive Module

Introduction

The Archive module Microsoft.PowerShell.Archive provides functions for storing files in ZIP archives (Compress-Archive) and extracting them (Expand-Archive). This module is available in PowerShell 5.0 and above.

In earlier versions of PowerShell the Community Extensions or .NET System.IO.Compression.FileSystem could be used.

Syntax

  • Expand-Archive / Compress-Archive
  • -Path
    • the path of the file(s) to compress (Compress-Archive) or the path of the archive to extract the file(s) form (Expand-Archive)
    • there are several other Path related options, please see below.
  • -DestinationPath (optional)
    • if you do not supply this path, the archive will be created in the current working directory (Compress-Archive) or the contents of the archive will be extracted into the current working directory (Expand-Archive)

Parameters

ParameterDetails
CompressionLevel(Compress-Archive only) Set compression level to either Fastest, Optimal or NoCompression
ConfirmPrompts for confirmation before running
ForceForces the command to run without confirmation
LiteralPathPath that is used literaly, no wildcards supported, use , to specify multiple paths
PathPath that can contain wildcards, use , to specify multiple paths
Update(Compress-Archive only) Update existing archive
WhatIfSimulate the command

Remarks

See MSDN Microsoft.PowerShell.Archive (5.1) for further reference

Compress-Archive with wildcard

Compress-Archive -Path C:\Documents\* -CompressionLevel Optimal -DestinationPath C:\Archives\Documents.zip

This command:

  • Compresses all files in C:\Documents
  • Uses Optimal compression
  • Save the resulting archive in C:\Archives\Documents.zip
    • -DestinationPath will add .zipif not present.
    • -LiteralPath can be used if you require naming it without .zip.

Update existing ZIP with Compress-Archive

Compress-Archive -Path C:\Documents\* -Update -DestinationPath C:\Archives\Documents.zip
  • this will add or replace all files Documents.zip with the new ones from C:\Documents

Extract a Zip with Expand-Archive

Expand-Archive -Path C:\Archives\Documents.zip -DestinationPath C:\Documents
  • this will extract all files from Documents.zip into the folder C:\Documents


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