* [babel] current directory and remote execution
@ 2010-03-03 23:25 Dan Davison
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From: Dan Davison @ 2010-03-03 23:25 UTC (permalink / raw)
To: emacs org-mode mailing list
A quick note about a new org-babel feature:
You can now use header argument :dir to alter the directory that is
current when code is executed. The directory may be a location on a
remote machine, specified using tramp syntax[1]. In this case the code
will be executed on the remote machine.
If a relative path for file output is supplied using :file, then it will
be interpreted relative to the altered current directory. But while file
output may be created on a remote machine, numeric/text results are
returned to the local buffer as normal.
The :dir header arg will affect most languages; retrieval of remote
results is currently available for shell, R, ruby, python, perl and
clojure. New sessions can use :dir (and can be remote), but pre-existing
sessions are currently unaffected by :dir.
Here's an example of running code remotely:
#+begin_src sh :dir /davison@oak.somewhere.uk:/tmp :results output
echo "Executed by `whoami` on `hostname` in `pwd`"
#+end_src
#+results:
: Executed by davison on oak in /tmp
And here's an example of mixing a relative :file path with :dir
#+begin_src R :file images/1.png :dir ~/project
plot(1:10)
#+end_src
#+results:
[[file:/home/dan/project/images/1.png]]
Further documentation at [2].
Dan
Footnotes:
[1] http://www.gnu.org/software/tramp/#Filename-Syntax
[2] http://orgmode.org/worg/org-contrib/babel/reference.php#header-argument-dir
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