tldr/pages/common/b2sum.md

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# b2sum
> Calculate BLAKE2 cryptographic checksums.
> More information: <https://www.gnu.org/software/coreutils/b2sum>.
- Calculate the BLAKE2 checksum for a file:
`b2sum {{filename1}}`
- Calculate BLAKE2 checksums for multiple files:
`b2sum {{filename1}} {{filename2}}`
- Read a file of BLAKE2 sums and filenames and verify all files have matching checksums:
`b2sum -c {{filename.b2}}`
- Calculate the BLAKE2 checksum from stdin:
`{{somecommand}} | b2sum`