On Jul 12, 10:57 pm, rickhg12hs <rickhg1...@gmail.com> wrote:
> I've tried to use R's untar command a number of different ways from
> Sage's commandline interface and I am having trouble listing the
> contents of a LZMA compressed TAR file. Actually, I don't seem to get
> any desirable output from r.untar so I am thinking I'm not even close
> to using the correct syntax.

Syntax with R commands is not always obvious for optional keywords.
Can you give us the *exact* R command (with options) you are trying to
use?  Note the documentation:  "What options are supported will depend
on the ‘tar’ used. "  So it is possible that the R untar in question
on Sage behaves differently from a 'native' implementation.  But most
likely it is the use of options that is the problem.  Unfortunately I
can't remember offhand how I've used them in the past :( but perhaps
someone else will.

> If I have a LZMA compressed TAR file, how can I list/read it with Sage
> and/or r.untar in Sage?

If you are just trying to use R from within Sage, without integrating
it with the rest of Sage, you can also use r_console(), or use %r in
the notebook, and just do things that way.

- kcrisman

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