On 14.06.2011 13:34, Uwe Ligges wrote:
On 14.06.2011 12:04, Janko Thyson wrote:
Dear list,
is there a way to comfortably "reset" R's library such that it only
contains only the base packages again? In other words, how can I
uninstall all contributed packages that I installed? Is there some sort
of index that's keeping track of what has been installed? If so, a
pointer would be great.
AFAIU, if you don't create such an "index file" yourself and loose track
of what you installed, probably the best way to "reset" R is to actually
re-install it. That's exactly what I'm trying to avoid.
I would like something like
path.lib <- "path/to/R/lib"
pkgs.to.remove <- readLines(path.to.index.file)
ip <- installed.packages()
pkgs.to.remove <- ip[!(ip[,"Priority"] %in% c("base", "recommended")), 1]
This way you select all installed packages that do not ship with R (as
base or recommended ones).
Uwe Ligges
Great, thanks!
sapply(pkgs.to.remove, uninstall.packages, lib=path.lib)
Best regards,
Janko
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