tldr/pages/common/b3sum.md

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# b3sum
> Command line utility for calculating BLAKE3 hashes.
> It is similar to Coreutils tools like b2sum or md5sum.
> More information: <https://github.com/BLAKE3-team/BLAKE3/tree/master/b3sum>.
- Calculate the BLAKE3 checksum for a file:
`b3sum {{path/to/file}}`
- Calculate BLAKE3 checksums for multiple files:
`b3sum {{path/to/file1}} {{path/to/file2}}`
- Calculate the BLAKE3 checksum from `stdin`:
`{{some_command}} | b3sum`
- Create a file of BLAKE3 checksums:
`b3sum {{path/to/file}} > {{path/to/file.b3}}`
- Read and verify a file of BLAKE3 checksums:
`b3sum --check {{path/to/file.b3}}`