Message-ID: <4ECA5C68.6070106@statistik.tu-dortmund.de>
Date: 2011-11-21T14:12:56Z
From: Uwe Ligges
Subject: Setting hostname in the .Renvironment
In-Reply-To: <CABG0rfvWd=KOFR6zJX+h63U2_76=Svfyy2rmo_Cjyh7no9qHvA@mail.gmail.com>
On 21.11.2011 01:32, Jonathan Greenberg wrote:
> This is a follow-up to a question I asked a few years back. We have a pair
> of computers that share a common home directory (and therefor a common
> .Renviron) with identical hardware, but very different sets of libraries
> such that using a "shared" R_LIBS between two computers does not work.
> They both use this as the default library for user installations:
>
> '~/R/x86_64-pc-linux-gnu-library/2.13'
>
> I would like to mod the .Renviron in such a way so
>
> '~/R/hostname-1/x86_64-pc-linux-gnu-library/2.13'
> '~/R/hostname-2/x86_64-pc-linux-gnu-library/2.13'
>
> How can I modify my R_LIBS_USER in the .Renviron to match this? The
> hostname would need to be "dynamically" set based on which computer I log
> into, but I tried something like this:
>
> R_LIBS_USER="~/lib/R/library/"$HOSTNAME"_%p_%a_%o_R%V"
Depends on the shells you are using and where it is defined, but you
definitely need braces rather than quotes as in:
R_LIBS_USER="~/lib/R/library/${HOSTNAME}"
and I have to
export HOSTNAME ${HOSTNAME}
at first on the machines I am using to have it accessible for R.
Best,
Uwe Ligges
> and R did not resolve the $HOSTNAME environment variable even though I can
> (from bash) echo $HOSTNAME and it return the correct name.
>
> Thoughts? Thanks!
>
> --j
>
>