How to unzip a file in Powershell?

Question

I have a

.zip

file and need to unpack its entire content using Powershell. I'm doing this but it doesn't seem to work:

$shell = New-Object -ComObject shell.application

$zip = $shell.NameSpace("C:\a.zip")

MkDir("C:\a")

foreach ($item in $zip.items()) {

  $shell.Namespace("C:\a").CopyHere($item)

}

What's wrong? The directory

C:\a

is still empty.

Answer 1

Here is a simple way using ExtractToDirectory from System.IO.Compression.ZipFile:

Add-Type -AssemblyName System.IO.Compression.FileSystem
function Unzip
{
    param([string]$zipfile, [string]$outpath)

    [System.IO.Compression.ZipFile]::ExtractToDirectory($zipfile, $outpath)
}

Unzip "C:\a.zip" "C:\a"

Note that if the target folder doesn't exist, ExtractToDirectory will create it.

How to Compress and Extract files

How to unzip a file in Powershell?

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