Painless way to install a new version of R? - Stack Overflow

"My preferred method on Windows (upgrading 2.10.1 to 2.11.0): 
  • Install R-2.11.0
  • Copy R-2.10.0/library/* to R-2.11.0/library/
  • Answer "no" to the prompts asking you if it is okay to overwrite.
  • Start R 2.11.0 and then type
  • update.packages()"
1
Or update.packages(checkBuilt=TRUE) – Marek Apr 22 at 15:38
2
Or update.packages(checkBuilt=TRUE, ask=FALSE) :-P – gd047 Apr 22 at 16:20
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