Re: show/compare compression algorithm/level

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On 23/06/2019 20:06, Matus UHLAR - fantomas wrote:
>> On 21/06/2019 19:53, Matus UHLAR - fantomas wrote:
>>> Hello,
>>> 
>>> is it possible when listing dar archive to show the
>>> compression algorithm and level used for files?
>>> 
>>> and when merging archives, e.g. creating decremental archive,
>>> does dar detect the same file even if it's compressed using
>>> different algorithm/level?
> 
> On 21.06.19 23:48, Denis Corbin wrote:
>> dar -l <archive> -q
>> 
>> will let you see the compression algorithm used, but not the 
>> compression level. For that you can use for example
>> '--user-comment %c' at archive creation time (let you refer to
>> the man page for this option details) and see what was the
>> command line used to create the archive.
> 
> so, only one compression scheme can be used per archive?

Yes for now: once a compression algorithm has been selected you can
define which file to compress and which file not to try compressing.

The archive format has room to have compression algorithm and
compression level per file, but so far this has not been founded very
useful.

What is your use case for such feature?

Regards
Denis



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