bysh 0.0.4

The unstable bash

Bysh

Bash interpreter in Python

Continuation of https://github.com/idank/bashlex. The bashlex files may have been modified.

Installation

py -3 -m venv venv && venv/scripts/activate.bat
pip install bysh
bysh

External libraries

Embedded in bysh.lib:

• bashlex
• colorama

Notes

alpha

For now the builtins and commands does not try to mimic the exact posix/bash behavior. The goal is to have a working core, and then correct details.

tkt

|| & && ; ;; ( ) | \n

• Simple Command
  • Noms separes par des espaces (+redirections) + control operator
• Pipeline
  • Simple commands séparées par des pipes
• List
  • pipelines séparées par des control operators
• Compound Commands
  • list mais avec des infos en plus
    • {} -> execute dans current shell
    • () -> execute subshell
    • (()) -> arithmetic
    • [[ ]] -> tests
• Shell functions
  • fonctions

stdin

Plus tard il faudra
msvcrt.getche() in (b'\x00', b'\xe0'):
https://docs.microsoft.com/en-us/cpp/c-runtime-library/reference/getch-getwch?view=vs-2019

TODO

Separate builtins from commands like $?