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# AGENTS.md

`dist-upgrade` is a single bash script that updates a Slackware `-current`
system with `slackpkg` and verifies the initrd afterwards.

## Testing

Run all of these before calling a change done:

    bash -n dist-upgrade
    ./dist-upgrade --self-test
    shellcheck --exclude=SC2218 dist-upgrade

SC2218 is a shellcheck 0.11.0 false positive: it flags a function called on the
left of a pipe inside another function definition (`b() { a | cat; }`), even
when `a` is defined above. Keep it excluded; do not restructure the pipeline to
silence it.

## Do not

- Do not run the script itself, or any `slackpkg` command, in this repo. It
  performs a real system upgrade and only makes sense on the user's Slackware
  box as root.
- Do not add config, cache or log files. The script is self-contained and
  configured through the `INITRD` environment variable.

## Conventions

- One file, no unrequested abstractions. Standard library and Slackware's own
  tools over new dependencies.
- Anything that parses initrd contents or `mkinitrd` output gets a case in
  `--self-test`.
- License is GPLv2-only. New source files carry the copyright header.