user.group. The allowed group permissions are one of
c("g+rwx", "g+rx", "go-w", "go-rwx"), or "-". The value
"-" means "don't change permissions".
mkdir.remote(path, user.group = NULL, remote = "", permissions = c("g+rwx", "g+rx", "go-w", "go-rwx", "-"))remote, this should be a full path or
a path relative to the user's home directory.user@server that does not
require interactive password entry. For local execution, pass an empty string "" (default).