[R] proxy setting RedHat Linux
plummer at iarc.fr
Thu Feb 20 10:36:03 CET 2003
On Thu, 2003-02-20 at 02:48, Jonathan Q. Li wrote:
> I was trying to update packages with my R 1.6 under RedHat 8.0 system.
> When entering this command,
> > update.packages()
> It simply says,
> trying URL `http://cran.r-project.org/src/contrib/PACKAGES'
> But nothing happens.
> Is this a problem with my proxy setting since I am working behind a
> firewall? It seems so:
> > Sys.getenv("http_proxy")
> Then the documentation in "download.file" says that Sys.putenv won't
> work in setting the proxy. It says " These environment variables must be
> set before the download code
> is first used: they cannot be altered later by calling
> I don't understand what this means: "set it before the download code is
> first used". I have installed the R 1.6 simply from RPM in CRAN.
Try setting the environment variables on the command line before you
launch R, e.g.
If this works, then you should put this line in your profile
( ~/.bash_profile ) or create a new file - say "R.sh" in the directory
/etc/profile.d containing the same line. This will ensure that the
environment variables are set every time you log on.
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