Archive Manager, or file-roller
, doesn't seem to have the option to set the compression level for 7z
files.
However, the windows client 7-zip has an option to do so using GUI –
On Ubuntu/Linux, one can set the compression level in the command line (CLI) using the -m
flag. For details, refer to this answer.
Is there any provision for setting the compression level for 7z
archives using GUI in Ubuntu?
Best Answer
My idea was to find some hint in the file listing of the packages or in gconf, but I had no luck. Someone else knew the answer though.
Superuser: Change default compression levels for file-roller?
That answer previously had no upvotes, so I checked if this has any effect at all and choose to compress some documents with the default settings and with maximum settings (type 7z). Result: 2,3 KB improvement on a ~300 KB archive.
Caution:
I tried to find out more through file-rollers manpage and user manual, still no luck. Then I dowloaded the source package and searched for "maximum" in
fr-command-7z.c
(note how I avoid to say I read the source), which gave me the following:That's as far as I can currently get, it seems like there is no ultra setting.