[R] Unix proxy and firewall problems

[Prof Brian Ripley]

>From ?download.file

      These environment variables must be set before the download code
      is first used: they cannot be altered later by calling
      'Sys.putenv'.

Also, Sys.putenv("http_proxy"="http...:8080") sets that to the value
in "" and not the value of a variable named that: for the latter you must 
use `` quoting.  This is I suspect the actual failure cause.

On Wed, 19 Oct 2005, Assa Yeroslaviz wrote:

> I was trying to install R on a unix server. Because of a firewall i can't
> install biocLite for working with Bioconductor.

> With windows it wasn't a problem. I used the option '--internet2' to bypass the
> firewall.
> I don't have any idea, how to do it with unix.
> I tried to set my proxy
>> Sys.putenv("http_proxy"="http...:8080")
>> Sys.getenv("http_proxy")
>                http_proxy
> "http://...:8080"
> http://by-cache.bayer-ag.com:8080/
> but than by try to use the source command to download the bioC.R script I'm
> getting the message:
>> source("http:/bioconductor.org/getBioC.R")
> Error in file(file, "r", encoding = encoding) :
>        unable to open connection
> In addition: Warning message:
> cannot open file 'http:/bioconductor.org/getBioC.R'
>
>
> Is there a possibility to change the proxy setting after the programm is already
> running or do i need to do it before?
>
> THX
>
> Assa
>
>
>
> --
> Assa Yeroslaviz
> Loetzenerstr. 15
> 51373 Leverkusen
>
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-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595