[R] http proxies: setting and unsetting

Gabor Grothendieck ggrothendieck at gmail.com
Wed May 30 17:22:06 CEST 2007

There is also a free program setenv.exe which is more powerful than setx.exe.
You mentioned that deleting http_proxy from your environment through the OS
would fix your problem.  setenv.exe can both set and delete environment
variables and you can specify user, system, etc.  See description and link here:

Grothendieck <ggrothendieck at gmail.com> wrote:
> One other point.  If you find you need to set a system or user environment
> variable then microsoft has a free tool called setx.exe that you can find here:
> http://support.microsoft.com/kb/927229
> You can do this from within R using system().
> On 5/30/07, Gabor Grothendieck <ggrothendieck at gmail.com> wrote:
> > On 5/29/07, matt.pettis at thomson.com <matt.pettis at thomson.com> wrote:
> > > OK, I think I get that... do you know which namespace the Sys.setenv() function affects?  Do you know if there are functions in R that can alter the user/system/process environment variables?
> > >
> >
> > Use the R Sys.getenv() command to get the process environment variables.
> > To get user and system environment variables, from the Desktop right click on
> > My Computer and choose Properties.  Then choose the Advanced tab
> > and click on the Environment Variables button near the bottom of the
> > window that appears.
> >

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