Someone raised an issue over at jdeb https://github.com/tcurdt/jdeb/issues/241
and I have to say I was a little confused about the docs on the AR support in compress https://commons.apache.org/proper/commons-compress/examples.html Commons Compress 1.0 to 1.2 can only read archives using the GNU/SRV4 > variant, support for the BSD variant has been added in Commons Compress > 1.3. Commons Compress 1.3 also optionally supports writing archives with > file names longer than 16 characters using the BSD dialect, writing the > SVR4/GNU dialect is not supported. Is this what it means? 1.0: Original: r/w GNU/SRV4: r BSD: unsupported 1.2: Original: r/w GNU/SRV4: r BSD: unsupported 1.3+: Original: r/w GNU/SRV4: r BSD: r/w The jdeb issue was actually not related to AR but TAR. But that's how I stumbled across the docs. cheers, Torsten