pkg os/user, type User struct, Uid string
pkg os/user, type User struct, Username string
pkg path, func Base(string) string
pkg path, func Clean(string) string
pkg path, func Dir(string) string
pkg path, func Ext(string) string
pkg path, func IsAbs(string) bool
pkg path, func Join(...string) string
pkg path, func Match(string, string) (bool, error)
pkg path, func Split(string) (string, string)
pkg path, var ErrBadPattern error