dup-code-checkDuplicate detection toolbox

A Rust CLI for finding duplicate files and suspected duplicate code spans (built for CI).

Fast file duplicates

Detect duplicate files (whitespace-insensitive) within a repo or across multiple roots.

Find suspected duplicate code spans and report start/end line numbers for each occurrence.

Run multiple detectors in one pass and output a single structured report.

Bound cost with maxFiles/maxTotalBytes and surface incomplete scans with strict mode.

Start with the Introduction to understand what dup-code-check does and how to use it.

This docs site publishes a plain-text docs bundle, similar to modern docs sites (e.g. the AI SDK):

See LLM Bundle for usage examples.