/usr/share/doc/littler/examples/update.r is in littler 0.1.5-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 | #!/usr/bin/r -t
#
# a simple example to update packages in /usr/local/lib/R/site-library
# parameters are easily adjustable
## adjust as necessary, see help('download.packages')
repos <- "http://cran.r-project.org"
## or use BioC's repo list if Biobase is installed:
suppressMessages(rc <- require(Biobase))
if (rc) {
repos <- Biobase:::biocReposList()
}
## this makes sense on Debian where no package touch /usr/local
lib.loc <- "/usr/local/lib/R/site-library"
## simply unrolling of all unlink over all files 'repos*' in $TMP
clearCache <- function() {
sapply(list.files(path=tempdir(), pattern="libloc*", full.names=TRUE), unlink)
}
## Always clear caches of remote and local packages
clearCache()
## r use requires non-interactive use
update.packages(repos=repos, ask=FALSE, lib.loc=lib.loc)
## Always clear caches of remote and local packages
clearCache()
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