file api

splitpath               => path to array of parts
joinpath                => array of parts to path

parsepath(path)         => (dir,base,ext)
parsepath(path,ext)     => (dir,base,ext)
parsepath(path,regex)   => (dir,base,ext)

stdpath(path)           => standardize path, removing extraneous dots
abspath(path)           => make absolute, relative to current dir
realpath(path)          => resolve all symlinks

glob(path)              => expand file globbing
userexpand(path)        => on UNIX, tilde expand, comparable on Windows