$ curl -L j.mp/crystalbrew | perl - setup

$ wget j.mp/crystalbrew
$ perl crystalbrew setup

export PATH=$HOME/.crystalbrew/current/bin:$PATH

$ source ~/.bashrc

$ crystalbrew help

$ crystalbrew --help
crystalbrew 0.1.0
Usage:
    crystalbrew help                         Show this message
    crystalbrew install <version>            Download and install a <version> (binary file)
    crystalbrew uninstall <version>          Uninstall a version
    crystalbrew use <version>                Use <version>
    crystalbrew list                         List installed versions
    crystalbrew ls                           Alias for `list`
    crystalbrew ls-remote                    List remote versions
    crystalbrew ls-all                       List remote and installed versions
    crystalbrew alias <key> <version>        Set alias to version
    crystalbrew unalias <key>                Remove alias
    crystalbrew clean <version> | all        Remove source file
    crystalbrew selfupdate                   Update crystalbrew
    crystalbrew exec <version> -- <command>  Execute <command> specified <version>
Example:
    # install from binary
    crystalbrew install v0.7.4

$ carton install

$ carton exec -- prove -lvr