At the top of the man page for 'tar', there are many references to the
argument 'MEMBER' but then it's not defined anywhere.
It took quite a bit of reading before I was able to deduce that it must
simply be some file/directory that's already inside an existing archive.
(Which finally explains why
FWIW, it was also frustratingly unclear that if I am in directory A and
there is an archive in that directory, and I want to extract that archive
to directory B which is somewhere else, I cannot run tar from directory A.
I was assuming there would be some output option to extract it to wherever
I w