Justbash

About

(This acts as extension for running bash commands in Justfile.

Don’t mistake it for Microsoft’s Just . But if I could steal some search results and link them to Rust it’s fine ;)

Status

Currently I’m testing features and much things probably will change.

Features

Shared environment (by using PID from Just itself to create a temporary shared directory)
Adding @ before bash command will output the same before execution (like it’s in the file but with vars replaced)
- Adding @@will print the exact same command
Executing Justbash puts you in a shell with all the environment loaded
- Setting TMP before execution puts you in the exact same environment like before
Bash execution is strict started with
Will load Justfunctionsif present
Coloring of STDERR
Show output copy’n’paste style with renvsubst

Bash Functions

Bundled functions like noerr ,export ,import will have an own page. Unless then please dig source code.

Installation

First step – don’t do system installations (until needed)

And yes we flow the XDG standard!

PREFIX="$HOME/.local"
if echo $PATH | tr ':' $'\n' | grep -qo "$PREFIX/bin"; then
	>&2 echo "Please export $PREFIX/bin to your PATH\!" 
fi

Install Just (if not yet done)

curl --proto '=https' --tlsv1.2 -sSf https://just.systems/install.sh | bash -s -- --to $HOME/.local/bin

Install Justbash

curl --progress-bar -sSfL https://raw.githubusercontent.com/blurayne/justbash/main/Justbash -o - \
	| install -m 755 /dev/stdin "$PREFIX/bin/Justbash"

Usage

set shell := ["Justbash", "-c"]

export FROM_JUST := "with"

environment-foo:
	#!Justbash
	export MYVAR="1233"
	export FROM_JUST="love"
	
environment-bar:
	#!Justbash
	export AWS_FOO="$(aws get-some-important-id)"
	
foo: environment-foo
	#!Justbash
	title "Testing the environment"
	@echo "$MYVAR"
	@echo "$FROM_JUST"

foobar: environment-foo
	echo "$MYVAR"  # will run in an own Justbash process
	echo "$FROM_JUST" # will run in another Justbash process

Todo

@@ annotation
Better error handler (Just uses the lineno in the Justfile only)
Get shenvsubst ready

blurayne/justbash