Oil is a new Unix shell. It's our upgrade path from bash to a better language and runtime

Related tags

Command-line Toolsoil
Overview

Oil Source Code

Build Status

Oil is a new Unix shell. It's our upgrade path from bash to a better language and runtime! (Why Create a New Unix Shell? / 2019 FAQ)

It's written in Python, so the code is short and easy to change. But we automatically translate it to C++ with custom tools, to make it fast and small. The deployed executable doesn't depend on Python.

This README is at the root of the git repo.

Contributing

  • Try making the dev build of Oil with the instructions on the Contributing page. This should take 1 to 5 minutes if you have a Linux machine.
  • If it doesn't, let us know. You can post on the #oil-dev channel of oilshell.zulipchat.com, or file an issue on Github.
  • Feel free to grab an issue from Github. Let us know what you're thinking before you get too far.

Quick Start on Linux

After following the instructions on the Contributing page, you'll have a Python program that you can quickly run and change! Try it interactively:

bash$ bin/osh

osh$ name=world
osh$ echo "hello $name"
hello world
  • Try running a shell script you wrote with bin/osh myscript.sh.
  • Try the Oil language with bin/oil.

Let us know if any of these things don't work! The continuous build tests them at every commit.

Dev Build vs. Release Build

Again, note that the developer build is very different from the release tarball. The Contributing page describes this difference in detail.

The release tarballs are linked from the home page. (Developer builds don't work on OS X, so use the release tarballs on OS X.)

Important: We Accept Small Contributions!

Oil is full of many ideas, which may be intimidating at first.

But the bar to contribution is very low. It's basically a medium size Python program with many tests, and many programmers know how to change such programs. It's great for prototyping.

  • For OSH compatibility, I often merge failing spec tests. You don't even have to write code! The tests alone help. I search for related tests with grep xtrace spec/*.test.sh, where xtrace is a shell feature.
  • You only have to make your code work in Python. Plain Python programs are easy to modify. The semi-automated translation to C++ is a separate step, although it often just works.
  • You can influence the design of the Oil language. If you have an itch to scratch, be ambitious. For example, you might want to show us how to implement nonlinear pipelines.

Docs

The Wiki has many developer docs. Feel free to edit them. If you make a major change, let us know on Zulip!

There are also READMEs in some subdirectories, like opy/ and mycpp/.

If you're confused, the best thing to do is to ask on Zulip and someone should produce a pointer and/or improve the docs.

Docs for end users are linked from each release page.

Repository Structure

Try this to show a summary of what's in the repo and their line counts:

$ metrics/source-code.sh overview

(Other functions in this file may be useful as well.)

A Collection of Interpreters

Oil is naturally structured as a set of mutually recursive parsers and evaluators. These interpreters are specified at a high-level: with regular languages, Zephyr ASDL, and a statically-typed subset of Python.

bin/              # Main entry points like bin/osh (source in bin/oil.py)
frontend/         # Lexing/Parsing code common to Oil and OSH
osh/              # OSH parsers and evaluators (cmd, word, sh_expr)
oil_lang/         # Oil parser and evaluator
core/             # Other code shared between Oil and OSH
pylib/            # Borrowed from the Python standard library.
tools/            # User-facing tools, e.g. the osh2oil translator

DSLs / Code Generators

Here are the tools that transform that high-level code to efficient code:

asdl/             # ASDL implementation, derived from CPython
pgen2/            # Parser Generator, borrowed from CPython
mycpp/            # Experimental translator from typed Python to C++.
                  # Depends on MyPy.
opy/              # Python compiler in Python (mycpp/ will replace it)
  lib/            # Common code
  compiler2/      # Bytecode compiler
  byterun/        # Metacircular bytecode VM in Python
  gold/           # tests
  byterun/        # Unused bytecode interpreter

Native Code

We have native code to support both the dev build (running under CPython) and the oil-native build (pure C++):

Python-2.7.13/    # CPython is the initial basis for the Oil VM
native/           # Python extension modules, e.g. libc.c
cpp/              # C++ code which complements the mycpp translation

Several Kinds of Tests

Unit tests are named foo_test.py and live next to foo.py.

test/             # Test automation
  gold/           # Gold Test cases
  gold.sh         
  sh_spec.py      # shell spec test framework
  spec.sh         # Types of test runner: spec, unit, gold, wild
  unit.sh         
  wild.sh
testdata/
spec/             # Spec test cases
  bin/            # tools used in many spec tests
  testdata/       # scripts for specific test cases
  errors/         # TODO: migrate these bad shell scripts
types/            # Scripts for running MyPy and PyAnnotate, etc.

Dev Tools and Scripts

We use a lot of automation to improve the dev process. It's largely written in shell, of course!

benchmarks/       # Benchmarks should be run on multiple machines.
metrics/          # Metrics don't change between machines (e.g. code size)
client/           # Demonstration of OSH as a headless server.
build/            # Build automation
  oil-defs/       # Files that define our slice of CPython.
  dev.sh          # For development builds, running CPython
devtools/         # For Oil developers (not end users)
  release.sh      # The (large) release process.
demo/             # Demonstrations of bash/shell features.  Could be
                  # moved to tests/ if automated.
  old/            # A junk drawer.
web/              # HTML/JS/CSS for tests and tools
soil/             # Multi-cloud continuous build (e.g. sourcehut, Github)
services/         # Other cloud services

Temp Dirs

Directories that begin with _ are not stored in git. The dev tools above create and use these dirs.

_bin/             # Native executables are put here
_build/           # Temporary build files
_devbuild/        # Developer build files not deleted upon 'make clean'
  gen/            # Generated Python and C code
_deps/            # build dependencies like re2c
_tmp/             # Test suites and other temp files
  spec/
  wild/
    raw/
    www/
  osh-parser/
  osh-runtime/
  vm-baseline/
  oheap/
  startup/
  ...
_release/         # Source release tarballs are put here
  VERSION/        # Published at oilshell.org/release/$VERSION/
    benchmarks/
    doc/
    metrics/
    test/
      spec.wwz
      wild.wwz
      ...
    web/          # Static files, copy of $REPO_ROOT/web
      table/

Build System for End Users

This is very different than the developer build of Oil.

Makefile
configure
install

Doc Sources

doc/              # A mix of docs
doctools/         # Tools that use lazylex/ to transform Markdown/HTML
lazylex/          # An HTML lexer which doctools/ builds upon.
README.md         # This page, which is For Oil developers

LICENSE.txt       # For end users
INSTALL.txt

More info

Python Files Not Translated to C++

mycpp/
  mylib.py  # statically typed equivalents of Python's data structures
pylib/      # copied from Python stdlib
core/
  py{error,os,util}.py  # too complicated to translate
*/*_def.py  # abstract definitions
*/*_gen.py  # code generators
Owner
GitHub Repository http://www.oilshell.org/
A minimal todo list for your terminal.

todo A minimal todo list for your terminal. Installation Run the following command. pip install git+https://github.com/piero-vic/todo.git Usage todo

Piero Lescano 7 Aug 08, 2022
Logic-Sim - A clone of 'Digital Logic Sim' from Sebastian Lague

Logic Simulator This is a clone of 'Digital Logic Sim' from Sebastian Lague. But

Ethan 1 Feb 01, 2022
A dec-bin converter uses 2's complement.

2's Complement Dec-Bin Converter A dec-bin converter uses 2's complement. Visit my Medium Post. What is 2's complement? Two's complement is the most c

Khaw Chi Hun (Jacky) 9 Mar 01, 2022
Simple tool, to update linux kernel on ubuntu

Kerbswap Simple tool, to update linux kernel on ubuntu Information At the moment, this tool only supports "Ubuntu" distributions, but will be expanded

dword 1 Oct 31, 2021
A Python package for a basic CLI and GUI user interface

Organizer CLI Organizer CLI is a python command line tool that goes through a given directory and organizes all un-folder bound files into folders by

Caltech Library 12 Mar 25, 2022
Random scripts and other bits for interacting with the SpaceX Starlink user terminal hardware

starlink-grpc-tools This repository has a handful of tools for interacting with the gRPC service implemented on the Starlink user terminal (AKA "the d

270 Dec 29, 2022
Python package with library and CLI tool for analyzing SeaFlow data

Seaflowpy A Python package for SeaFlow flow cytometer data. Table of Contents Install Read EVT/OPP/VCT Files Command-line Interface Configuration Inte

<a href=[email protected]"> 3 Nov 03, 2021
Stephen's Obsessive Note-Storage Engine.

Latest Release · PyPi Package · Issues · Changelog · License # Get Sonse and tell it where your notes are... $ pip install sonse $ export SONSE="$HOME

Stephen Malone 23 Jun 10, 2022
Fetch is use to get information about anything on the shell using Wikipedia.

Fetch Search wikipedia article on command line [Why This?] [Support the Project] [Installation] [Configuration] Why this? Fetch helps you to quickly l

Yash Singh 340 Dec 18, 2022
GoSearch for anything from your terminal

GoSearch for anything from your terminal Requirements pip install beautifulsoup4

Malik Mouhiidine 1 Oct 02, 2021
gget is a free and open-source command-line tool and Python package that enables efficient querying of genomic databases.

gget is a free and open-source command-line tool and Python package that enables efficient querying of genomic databases. gget consists of a collection of separate but interoperable modules, each des

Pachter Lab 570 Dec 29, 2022
jenkins-tui is a terminal based user interface for Jenkins.

jenkins-tui 📦 jenkins-tui is a terminal based user interface for Jenkins. 🚧 ⚠️ This app is a prototype and in very early stages of development. Ther

Craig Gumbley 22 Oct 24, 2022
A tool to automatically convert old string literal formatting to f-strings

flynt - string formatting converter flynt is a command line tool to automatically convert a project's Python code from old "%-formatted" and .format(.

Elijah K 551 Jan 06, 2023
Quo is a Python based toolkit for writing Command-Line Interface(CLI) applications.

Quo is a Python based toolkit for writing Command-Line Interface(CLI) applications. Quo is making headway towards composing speedy and orderly CLI applications while forestalling any disappointments

Secretum Inc. 16 Oct 15, 2022
Several tools that can be added to your `PATH` to make your life easier.

CK-CLI Tools Several tools that can be added to your PATH to make your life easier. prettypath Prints the $PATH variable in a human-readable way. It a

Christopher Kumm 2 Apr 21, 2022
Keybase-cli - Keybase docker container that exposes the keybase CLI and some common commands such as getting files or loading github action secrets

keybase-cli Keybase docker container that exposes the keybase CLI and some commo

Bryce Geiser 4 Aug 04, 2022
Joji convert a text to corresponding emoji if emoji is available

Joji Joji convert a text to corresponding emoji if emoji is available How it Works ? 1. There is a json file with emoji names as keys and correspondin

Gopikrishnan Sasikumar 28 Nov 26, 2022
🌍 Harness the power of whatsmydns from the command-line.

chkdns Harness the power of whatsmydns from the command-line. Installing with pip pip install chkdns Run chkdns --host github.com Alternatively you ca

Craig Gumbley 3 Oct 29, 2022
liquidctl – liquid cooler control Cross-platform tool and drivers for liquid coolers and other devices

Cross-platform CLI and Python drivers for AIO liquid coolers and other devices

1.7k Jan 08, 2023
Project scoped command execution to just do your work

Judoka is a command line utility that lets you define project scoped commands and call them through their alias. It lets you just do (= judo) your work.

Eelke van den Bos 2 Dec 17, 2021