hashio

hashio is a checksum and verification tool for files and directory trees.

It can recursively hash content, collect filesystem metadata, verify manifests, emit multiple output formats, and optionally persist results in a local SQLite cache for snapshots and diffs.

Highlights

• Multiple hash algorithms: c4, crc32, md5, sha256, sha512, xxh64
• Output formats: json, txt, and mhl
• Recursive hashing for file and directory trees
• Configurable ignorable file patterns
• Optional metadata-only scans with the null algorithm
• Optional SQLite-backed cache with snapshot diffing
• Optional .gz content hashing with --uncompress

Documentation

• Getting Started
• Usage
• Configuration
• Cache and Snapshots
• Python API

Quick Example

hashio <PATH> -o hash.json
hashio --verify hash.json

To make manifest paths portable relative to the output file:

hashio <DIR> -or hash.json