pwd: pwd [-LP]
    Print the name of the current working directory.

    Options:
      -L        print the value of $PWD if it names the current working
                directory
      -P        print the physical directory, without any symbolic links

    Exit Status:
    Returns 0 unless an invalid option is given or the current directory
    cannot be read.

(GreenRay AIO simulates the options listed above.)
