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I want to archive a folder, but I want to exlude all media files.

How do I leave out *.avi and *.flac when archiving?

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Only possible solution is to use the command-line version (it doesn't work in the GUI [Add to Archive] dialog):

7z.exe a Archive.7z C:\Folder\* -r -x!*.avi -x!*.flac

The "Parameters" input box in the GUI can only be used for compression parameters and cannot be used with standard command line parameters.

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    Note that you might need to add r for recursive so it will be -xr!*.avi – fedmich Apr 21 '14 at 0:00
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    If you use powershell make sure to wrap it quotes: "-x!*.config" I just lost half an hour over that! – Clement Aug 6 '14 at 23:43
  • Just as reference, this is my batch file to backup my C# projects in folder "C:\prj": "C:Program Files\7-Zip\7z.exe" a prj.7z "C:\prj*" -r -x!*.tmp -x!*.pdb -x!*.exe -x!*.dll pause – Eric Ouellet Jun 14 '16 at 2:01
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    Interestingly enough, -r in my case was needed so that the extensions were actually excluded, but did recurse subdirectories with or without -r – golimar Feb 8 '17 at 18:01
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    @Clement in case of powerShell single quotes should be used. PS has ignored -x switch in double quotes like you said. & $a7z a $archName $binpath $addfiles -m0=LZMA '-xr!*.config' '-xr!*.log' works like a charm for me – oleksa Jun 2 '17 at 8:30
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Also

7za -bt -mx9 a archive.7z d:\backups\*  -x!*.7z

and

7za -bt -mx9 a archive.7z d:\backups\*.*  -x!*.7z

Created different result. The one with *.* seem to work.

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