[R-SIG-Mac] How to revert to older R version?

Simon Urbanek simon.urbanek at r-project.org
Fri May 12 17:38:02 CEST 2006

On May 12, 2006, at 7:12 AM, Booman, M wrote:

> Dear all,
> I have just installed R 2.3.0 on my PowerMac to be able to work  
> with Bioconductor version 1.8, but found out afterwards that the  
> Bioconductor 1.8 binaries are not yet available for OS X. They say  
> they will be available soon, but since BioC 1.8 is from April 27 I  
> figure 'soon' can be a while...

You can test them if you use http://r.research.att.com/bioc/ as the  

> So I want to return to an old R version, but I am not sure how to.  
> I see in my Framework directory that the folder 'current' is just  
> an alias to the 2.3 folder; is it as simple as changing the alias  
> to the folder containing version 2.2, or are there other  
> modifications I have to make?

If your 2.2 installation is still complete, yes. However, depending  
on your setup, Apple installer may have removed the older R - in that  
case you need to re-install 2.2.1.


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