I can create tar files compressed using lzma as such:
$ ls ./DbDumps
$ XZ_OPT=-9 tar cJf dbDumps.tar.xz DbDumps
But, what I really want to do ( but cannot ) is compress each individual file, and then create the tar file. for example:
$ cd DbDumps
$ xz.exe *dmp
$ cd ..
$ tar cf dbDumps.tar DbDumps
Should I investigate HomeBrew ? XZ.pkg ?
Actually, back in October www.aeyoun.com claimed that Yosemite, other than via tar, does not support *.xz file compression. Is this correct? Might it be that "*xz" is doable, but Apple just won't say "it is officially supported"??