[7m bin/oil Usage [0;0m

    Usage: oil  [OPTION]... SCRIPT [ARG]...
           oil [OPTION]... -c COMMAND [ARG]...

`bin/oil` is the same as `bin/osh` with a the `oil:all` option group set.  So
`bin/oil` also accepts shell flags.

    oil -c 'echo hi'
    oil myscript.oil
    echo 'echo hi' | oil
