Provider for hashshell

Hash Shell must provide a common interface to trees. Providers would implement this interface.

Filesystem Provider for hashshell

Hash Shell must provide access to the filesystem including all standard operations (copy, move, unlink, etc.).

PIping between commands and to files for hashshell

Hash Shell should support chaining together commands with pipes. Also, redirection of output to a file.

Command specifications for hashshell

A command specification should contain all information needed by a user about a command. It should define the command's arguments (e.g., names, values, optionality) and provide information to the help system.

Support readline abilities for hashshell

Hash Shell should support readline or a readline-like line editting. This should include command name completion, argument name completion, variable completion, history, and Emacs/vi keybindings.