hashsum

vb hashsum [OPTIONS] FILE...

Description

Compute or verify file hashes using any built-in hash algorithm. Output format is: ALGO HASH PATH.

Options

-a, --algorithm NAME

One of: md5, sha1, sha3[-{224|256|384|512}], blake3[-{128|256|384|512}], fnv32, fnv64, murmur3, xxh32, xxh64, xxh3[-64|-128]

-c, --check FILE

Verify hashes from FILE (use - for stdin)

-r, --recursive

Recurse into directories

-h, --dereference

Follow symlinks instead of hashing link targets

--size N

Override bit-length for sha3/blake3/xxh3

--seed N

Seed value for murmur3 and xxh3 (decimal or 0x… )

-q, --quiet

Suppress per-file OK output in –check mode

See also: md5sum, sha1sum, sha3sum, blake3sum, fnv32sum, fnv64sum, murmur3sum

Examples

• Compute default hashes (sha3-256) for two files.

$ vb hashsum file1.txt dir/file2.txt
sha3-256  78ba0c354ff15c2c2423ef5fe725bd990cef933d75b970febe1ad7384fcfd518  file1.txt
sha3-256  0f49823468aa0e8e4a6830be14e8ae02070696f7d7f901ed3fce1a6f3e44e00a  dir/file2.txt

• Use a different algorithm and seed.

$ vb hashsum --algorithm xxh3-64 --seed 0x1234 data.bin
xxh3-64:seed=4660  e22ad81b145183d3  data.bin

• Generate a checksum file and verify it later.

$ vb hashsum --check checks.txt
verify.txt: OK