The switch sets output log level for Delete/Add/Update/Extract operations.
|-bb0||disable log (default).|
|-bb1 or -bb||show names of processed files in log.|
|-bb2||show names of additional files that were processed internally in solid archives: skipped files for "Extract" operation, repacked files for "Add" / "Update" operations.|
|-bb3||show information about additional operations (Analyze, Replicate) for "Add" / "Update" operations.|
7z a a.7z *.txt -bb
adds *.txt files to a.7z archive and shows all files that were processed.
7z u a.7z *.txt -bb3
updates *.txt files in a.7z archive and shows information about additional operations.