zip command to create zip archives.
zip(zipfile, files, flags = "-r9X", extras = "", zip = Sys.getenv("R_ZIPCMD", "zip"))path.expand) will be performed.zip will by default use the
value of R_ZIPCMD, which is set in etc/Renviron if an
unzip command was found during configuration. On Windows, the
default relies on a zip program (for example that from
Rtools) being in the path. The default for flags is that appropriate for zipping up a
directory tree in a portable way: see the system-specific help for the
zip command for other possibilities.
Argument extras can be used to specify -x or -i
followed by a list of filepaths to exclude or include.
unzip, unz.