---
description: mtm-ddwipe project conventions
---

# Project conventions
- Use English throughout the project.
- Keep shell scripts Bash-based.
- Preserve the current behavior of the main script: `mtm-ddwipe` wipes block devices.
- Strengthen destructive-action safety checks in `mtm-ddwipe`.
- Keep `mtm-ddwipe` interactive by default.
- Require explicit confirmation before destructive actions.
- Show clear device details before confirmation.
- Check that target devices are not mounted or in use before wiping.
- Keep user-facing messages short and clear.
- Keep error and help messages short and clear.
- Prefer minimal, focused changes that preserve intent.
- Keep `.continue/rules/project.md` aligned with project conventions and concise.
- `mtm-ddwipe` is a small Bash script with helper functions.
- Keep the host and line-number removal behavior intact for related output processing.
- `mtm-ddwipe` must print a usage line and support `-h`/`--help`.
- Validate that wipe targets are real block devices before operating on them.
- Keep short, explicit confirmation prompts before destructive operations.
- Prefer confirmation prompts that require typing the target device path or an exact safety phrase.
- Keep help text concise, usage-first, and warning-focused.
- Keep destructive safeguards strict and explicit.
- If adding non-interactive support, make it an opt-in safety flag.
- Keep device identification prompts clear and specific.
- Preserve the fallback wipe flow: secure discard, zero discard, then zero-fill with `dd`.
- Keep timing and status output short and readable.

# Project identity
- Main script: `mtm-ddwipe`
- License: GNU GPL v3