Tush is a modern, statically typed shell and scripting language. It is a major departure from classic Unix shells that were centred around string manipulation and substitution.
- Structured. Work with lists, tuples, functions and files, not just raw strings.
- Functional in syntax and type system, but imperative for working with the file system.
- Concise but not cryptic. No more
@du -hs "$v" >$@or[[ -e "$f" ]]
- An expressive type system. Parametric polymorphism, algebraic types and typeclasses. Immutable data.
- Programs are functions. Command line arguments and pipes are unified as parameters.
- Files, globs and regexes are first-class features with syntax for literals and path construction operators.
- Lists, tuples, records and dictionaries, with handling operations inspired by relational algebra.
- A new set of coreutils taking advantage of these facilities.
- A full scripting language with sane control flow, pattern matching and macros.
See the quick start guide.
The language design has lots of open questions. Among them, how to:
- Handle errors — exceptions, Maybe monad, error codes, other possibilites?
- Dynamically type files — existential types?
- Create a language that can be seamlessly used interactively, but also for safe scripting, for programming in the large.
- Disambiguate the multiply operator (
*) from a wildcard.
Dependencies: Boehm garbage collector, GNU Readline, libkiss
sudo apt-get install libreadline-dev libgc-dev
git clone https://github.com/Fedjmike/libkiss
cd libkiss; make; cd -
git clone https://github.com/Fedjmike/tush
cd tush
make && sudo make install
See developing.md and the todo list.
Copyright (c) 2015 Sam Nipps.
Unless otherwise stated, a source file in this package is under the GNU GPL V3 license.
This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.