ClawHub

Checksum

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A CLI utility for generating and verifying cryptographic file checksums (MD5, SHA1, SHA256). Supports recursive directory hashing and verification from file.

Install

openclaw skills install checksum

Checksum Utility

A dedicated CLI tool for ensuring file integrity. Use this skill to verify downloads, check for changes in files, or generate checksums for release artifacts.

Features

  • Multi-Algorithm: Supports md5 (default), sha1, sha256, sha512.
  • Recursive Hashing: Generates checksums for entire directories.
  • Verification: (Planned) Validate files against a checksum list.
  • JSON Output: Machine-readable output for integration scripts.

Usage

Calculate File Checksum

node skills/checksum/index.js --file <path> [--algo <md5|sha1|sha256>]

Example:

node skills/checksum/index.js --file package.json --algo sha256
# Output: e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855  package.json

Recursive Directory Checksum

node skills/checksum/index.js --dir <path> [--algo <md5|sha1|sha256>] [--json]

Example:

node skills/checksum/index.js --dir src/ --algo sha1 --json > checksums.json

Why use this instead of md5sum?

  • Cross-Platform: Works on any OS with Node.js (Linux, macOS, Windows).
  • No System Deps: Doesn't rely on coreutils being installed.
  • JSON Support: Easy to parse in other scripts.