Rusty Bash (a.k.a. sushi 🍣 shell)

IMPORTANT: the main branch is switched to the shell develped for articles on SoftwareDesign. （今までのメインブランチは、連載のものに比べて散らかりすぎなので、連載のものをmainに切り替えました。）

old main branch

What's this?

A clone of Bash, which is developed as a hobby of our group and for monthly articles on SoftwareDesign magazine published by Gijutsu-Hyohron Co., Ltd.

Quick Start

ueda@uedaP1g6:~$ git clone https://github.com/shellgei/rusty_bash.git
ueda@uedaP1g6:~$ cd rusty_bash
ueda@uedaP1g6:~$ cargo run
   Compiling sush v2025.6.9 (/home/ueda/GIT/rusty_bash)
    Finished dev [unoptimized + debuginfo] target(s) in 2.33s
     Running `target/debug/sush`
ueda@uedaP1g6:~🍣 main🌵

For Contributors

Since the main branch must synchronize the articles, further developments are reflected in the following branches. We prepared dev-* branches for adding your codes with pull requests.

dev-builtins: for builtin commands
dev-signal: for development on signal
dev-test: for development of a nice test system and test cases (we need more sophisticated test)
dev-others: for development of other features

These dev-* branches will be merged to the main branch depending on the situation of the articles. You can also propose some dev-foobar branches.

List of Features

✔️ :available
🚧 :partially available (or having known bugs)
🙅 : not implemented

simple commands

features	status	features	status	features	status
command	✔️	substitutions	✔️	function definition	✔️

compound commands

features	status	features	status	features	status
if	✔️	while	✔️	()	✔️
{}	✔️	case	🙅	until	🙅
for	🙅

control operator

features	status	features	status	features	status
\|\|	✔️	&&	✔️	;	✔️
;;	✔️	\|	✔️	&	✔️
\|&	✔️

expansion

features	status	features	status	features	status
brace `{a,b}`	✔️	brace `{1..10}`	🙅	tilde	✔️
parameter/variable `$A ${A}`	✔️	parameter/variable (others)	🙅	command substitution	✔️
arithmetic	🙅	word splitting	✔️	path name	✔️

builtin commands

features	status	features	status	features	status
cd	✔️	pwd	✔️	read	🙅
exit	✔️	source	🙅	set	🙅
shopt	🙅	:	✔️	.	🙅
alias	🙅	bg	🙅	bind	🙅
break	🙅	builtin	🙅	caller	🙅
command	🙅	compgen	🙅	complete	🙅
compopt	🙅	continue	🙅	declare	🙅
dirs	🙅	disown	🙅	echo	🙅
enable	🙅	eval	🙅	exec	🙅
fc	🙅	fg	🙅	getopts	🙅
hash	🙅	help	🙅	history	🙅
jobs	🙅	kill	🙅	let	🙅
local	🙅	logout	🙅	mapfile	🙅
popd	🙅	printf	🙅	pushd	🙅
read	🙅	readonly	🙅	return	🙅
shift	🙅	suspend	🙅	test	🙅
times	🙅	trap	🙅	true	✔️
type	🙅	typeset	🙅	ulimit	🙅
umask	🙅	unalias	🙅	unset	🙅
wait	🙅	export	🙅	false	✔️

beyond Bash

features	status
branch display in prompt	✔️

Thanks to

Partially in Japanese.

blog articles