hashtree

A tiny little utility to generate hashes of all files in a directory tree.

Usage

hashtree [options] <path...>

Options:

• -fmt <string>

  Selects an output format. Options are:

  • hex (default)

    Hash (as lowercase hexadecimal), two spaces, file path. This is the format used by standard utilities like sha256sum.

  • base64

    Same as hex, but with Base64 output (standard form, with padding) instead of hex.

  • json-hex (or simply json)

    One JSON object on each line, with keys path (file path) and hash (lowercase hex hash).

  • json-base64

    Same as json-hex, but with Base64.

• -hash <string>

  Selects the hash to use. Supported hashes are currently:

  • sha256 (default)
  • sha224
  • sha512
  • sha1 (weak - avoid)
  • md5 (weak - avoid)
  • crc32 (not a cryptographic hash - uses IEEE polynomial)

• -jobs <int>

  Selects the number of jobs to run in parallel. By default, one job is used per CPU in the system.

  Note that, with more than one job running, the output order will be unpredictable. Consider piping output to a utility like sort if consistency is needed.