CODEWITHSUNDEEP
powershell
Apurv
Apurv

Reputation: 3753

Unable to unzip using powershell

I am trying to unzip using powershell with below command --

powershell.exe -nologo -noprofile -command "& { Add-Type -A 'System.IO.Compression.FileSystem'; [IO.Compression.ZipFile]::ExtractToDirectory('E:\test.zip', 'E:\'); }"

I get below log

'E:\test1.txt' 
already exists."
At line:1 char:53
+ & { Add-Type -A 'System.IO.Compression.FileSystem'; 
[IO.Compression.ZipFile]::Ex ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~
    + CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
    + FullyQualifiedErrorId : IOException

===============================

I don't see the archive being unzipped.

Update 1

E:\test1.txt already exists at the destination. How to change the command to overwrite files.

Update 2

The version of powershell available doesn't support Expand-Archive

Upvotes: 0

Views: 2525

Answers (2)

Apurv
Apurv

Reputation: 3753

Below is what solved my problem 

md E:\temp
move E:\test.zip     E:\temp
powershell.exe -nologo -noprofile -command "& { Add-Type -A 'System.IO.Compression.FileSystem'; [IO.Compression.ZipFile]::ExtractToDirectory('E:\temp\test.zip', 'E:\temp\'); }"
del E:\temp\test.zip
move /Y E:\temp\* E:\
rd E:\temp

Upvotes: 0

Bacon Bits
Bacon Bits

Reputation: 32170

You can't overwrite files with that method. You need to read the documentation for ZipFileExtensions.ExtractToDirectory(source, destinationDirectoryName):

This method creates the directory specified by destinationDirectoryName. If the destination directory already exists, this method does not overwrite it; it throws an IOException exception. The method also creates subdirectories that reflect the hierarchy in the zip archive. If an error occurs during extraction, the archive remains partially extracted. Each extracted file has the same relative path to the directory specified by destinationDirectoryName as its source entry has to the root of the archive.

If you want to use ZipFileExtensions.ExtractToDirectory() with overwrite, you'll need to extract the files to a temporary folder and then copy/move them to the desired location.

Try something like:

do {
    $TempFolder = Join-Path -Path $([System.IO.Path]::GetTempPath()) -ChildPath $([System.IO.Path]::GetRandomFileName());
} while ((Test-Path -Path $TempFolder));

mkdir $TempFolder | Out-Null;

[IO.Compression.ZipFile]::ExtractToDirectory('E:\test.zip',$TempFolder);

Get-ChildItem -Path $TempFolder -Recurse | Move-Item -Destination 'E:\' -Force;

rmdir $TempFolder;

Note that this code is untested.

Upvotes: 2

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