The performance of both the Windows and Powershell Zip utilities is abysmal
The following Powershell script enables a Zip operation on approximately 0.33GB of data consisting of around 59,000 files to go from minutes down to less than a minute using 7-Zip instead of Powershells Compress-Archive
Ref: https://stackoverflow.com/a/25288780
Features
- Raise an error if 7zip is missing
- Create a timestamped filename
- Use environment variables to locate common directories for portability
- Skip a folder that should not be included in the resulting zip file using the
-xr!syntax - Display a nice progress GUI with
7zg.exe
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| # Use 7zg.exe for GUI or just 7z.exe for none | |
| $7zipPath = "$env:ProgramFiles\7-Zip\7zg.exe" | |
| if (-not (Test-Path -Path $7zipPath -PathType Leaf)) { | |
| throw "7 zip file '$7zipPath' not found. Contact Toggen" | |
| } | |
| Set-Alias Start-SevenZip $7zipPath | |
| $Source = "$env:ProgramData\Software Assistant\Assistant\Data" | |
| $DateTime = (Get-Date -Format "yyyyMMddHHmmss") | |
| # adjust to copy zip to onedrive for backup | |
| $Target = "C:\Users\YourUser\OneDrive - Your Company Pty Ltd\0. Tax Assistant Backups" | |
| # location of output zip when testing | |
| $Target = "c:\temp\" | |
| $TargetZip = Join-Path $Target "SoftwareAssistantBackup-$DateTime.zip" | |
| Start-SevenZip a -xr!_Updates $TargetZip $Source |
7-Zip GUI pops up so you can view the progress
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