[R] Help update.packages()

Prof Brian Ripley ripley at stats.ox.ac.uk
Tue Nov 28 15:34:46 CET 2000

> Date: Tue, 28 Nov 2000 06:25:35 -0800 (PST)
> From: Dinil Penne <pennedinil at excite.com>
> I'm getting the following error message - 

Please report your R version and OS when asking for help.

> > update.packages()
> The name specified is not recognized as an
> internal or external command, operable program or batch file.
> Error in download.file(url = paste(contriburl, "PACKAGES", sep = "/"),  : 
>         No download method found
> In addition: Warning messages: 
> 1: wget not found 
> 2: cmd execution failed with error code 1 in: shell("lynx -help", invisible
> = TRUE) 
> Could someone explain what may be going on and/or how I can fix the problem?

What is going on is that you are not reading the help pages, which do
indeed explain this!  You need to install wget or lynx. As in:

To use "wget" or "lynx" the executable must be installed on your system and
in your path. 

wget.exe is available from http://www.stats.ox.ac.uk/pub/Rtools/wget.zip
lynx.exe is available from http://www.fdisk.com/doslynx/lynxport.htm

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 272860 (secr)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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