Just.sh – compiler that turns Justfiles into portable shell scripts
Justfiles are like Makefiles, except Just is a command runner, whereas Make is a build system. As I understand it, Just was built to be a less arcane version of Make for collecting commands common to a code repository. When I first learned about Just, I realized that parsing arguments and running commands is exactly what shell scripts do, and there probably isn't much Just does that sh doesn't. This project proves that hypothesis by compiling Justfiles to portable (POSIX-compatible) shell scripts. just.sh is particularly useful for running Justfiles in esoteric environments where Just may…
Just.sh – compiler that turns Justfiles into portable shell scripts launched on December 26, 2023 with 64 votes, #708 of 3,780 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 2 years on.
In plain words
Just.sh compiles Justfiles into portable POSIX-compatible shell scripts. Justfiles are command runners similar to Makefiles but simpler, commonly used to organize repository commands. This tool converts them to standard shell scripts, making Justfiles executable in environments where the Just runtime may not be available, such as restricted CI/CD pipelines or specialized computing environments.
written from the facts on this page · September 2026
From the sources
Compile Justfiles to portable shell scripts. Contribute to jstrieb/just.sh development by creating an account on GitHub.
In the maker’s words, at launch
Justfiles are like Makefiles, except Just is a command runner, whereas Make is a build system. As I understand it, Just was built to be a less arcane version of Make for collecting commands common to a code repository. When I first learned about Just, I realized that parsing arguments and running commands is exactly…
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