7-Zip for Powershell

April 7, 2013 7-zip, Powershell

powershell_logo At work we deal with different big databases, and by big I mean between 3.5 and 8 GB. Those databases are zipped with 7-Zip and stored on a server. Depending on the scenario we unzip one of these databases to a local folder and attach it to the SQL Server. To simplify these steps we have a couple of Powershell scripts, among other things invoking the command line version of 7-Zip.

However, extracting an archive of several gigabytes over the network might take some time, and we’d like to see the progress in the Powershell console. Powershell provides a standard way to report progress by calling Cmdlet.WriteProgress, which then will be displayed by the current host (e.g. command line) appropriately.

Therefore with some support of a co-worker I’ve written two Cmdlets for extracting and compressing archives. The syntax is simple as this:

Expand-7Zip
    [-ArchiveFileName] <string>
    [-TargetPath] <string>
    [<CommonParameters>]

Compress-7Zip 
    [-ArchiveFileName] <string> 
    [-Path] <string>
    [[-Filter] <string>]
    [-Format <OutArchiveFormat> {SevenZip | Zip | GZip | BZip2 | Tar | XZ}]
    [-CompressionLevel <CompressionLevel> {None | Fast | Low | Normal | High | Ultra}]
    [-CompressionMethod <CompressionMethod> {Copy | Deflate | Deflate64 | BZip2 | Lzma | Lzma2 | Ppmd | Default}]
    [<CommonParameters>]

It works with both x86 and x64 and uses SevenZipSharp as a wrapper around 7zip’s API.

7zip4powershell

You can download the cmdlets with the required libraries here or grap the sources at Github.

Comments

rZr

April 7, 2013 at 10:27 PM

Nice, thanks!

Dave

June 12, 2015 at 06:19 AM

Hi Thomas,

Thanks for great work. I have downloaded the package and started using. It’s really great.
Can you please help me how can I modify your package ?
Actually I want to exclude few folders and file extensions, but filter parameter just include those files/folder which are filtered.
May be your work required that, but is there any existing setting to exclude folders and files?

Thanks,
Dave

Thomas Freudenberg

June 14, 2015 at 10:58 PM

Hi Dave,

I didn’t need the exclusion of files and folders, so I didn’t implement it. Feel free to modify my code, you can find it on Github. How about using the pipeline featire of PowerShell? I would accept a pull request.

Best regards
Thomas

Mathieu

August 17, 2015 at 02:07 PM

Nice.

Import-Module -Name “7Zip”

Works when all the libraries from 7Zip4PowerShell.zip are placed in the modules directory, and create a module manifest data file (e.g. c:\Windows\System32\WindowsPowerShell\v1.0\Modules\7Zip\7Zip.psd1):

  
@{  
 GUID = '{00000000-1111-2222-3333-000000000000}'  
 Author = 'Thomas Freudenberg'  
 CompanyName = 'N/A'  
 Copyright = '© Thomas Freudenberg'  
 ModuleVersion = '1.0.0.0'  
 PowerShellVersion = '2.0'  
 HelpInfoUri = "[http://thomasfreudenberg.co...](http://thomasfreudenberg.com/archive/2013/04/07/7-zip-for-powershell "http://thomasfreudenberg.com/archive/2013/04/07/7-zip-for-powershell")"

 NestedModules = @(  
 "7Zip4Powershell.dll")  
 CmdletsToExport = @(  
 "Expand-7Zip",  
 "Compress-7Zip"  
 )  
}