z tracks your most used directories, based on 'frecency'. After a short learning phase, z will take you to the most 'frecent' directory that matches ALL of the regexes given on the command line, in order. For example, z foo bar would match /foo/bar but not /bar/foo. Because they're regexes, z f b would take you to /foo/bar as well. z is designed for use only with zsh and bash. WWW: https://github.com/rupa/z/