Methods to update R repository's PACKAGES file fast

run_example.sh

#!/usr/bin/env bash
Rscript update_r_packages.R --dir "local_cran/src/contrib"

update_r_packages.R

#!/usr/bin/env Rscript
library("cranlike")
library("optparse")

# default Value
repos_path = "local_cran/src/contrib"

# Read arguments
option_list = list(
    make_option(c("-d", "--dir"), type="character", default=repos_path,
                  help="path of repos", metavar="character")
)
opt_parser = OptionParser(option_list=option_list)
opt = parse_args(opt_parser)

# main
print("update packages...")
print(opt$dir)
update_PACKAGES(dir=opt$dir, type="source")
print("done")