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34 lines
887 B
Plaintext
34 lines
887 B
Plaintext
---
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syntax: markdown
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tags: [tldr, common]
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source: https://github.com/tldr-pages/tldr.git
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---
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# b2sum
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> Calculate BLAKE2 cryptographic checksums.
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> More information: <https://www.gnu.org/software/coreutils/b2sum>.
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- Calculate the BLAKE2 checksum for one or more files:
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`b2sum {{path/to/file1 path/to/file2 ...}}`
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- Calculate and save the list of BLAKE2 checksums to a file:
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`b2sum {{path/to/file1 path/to/file2 ...}} > {{path/to/file.b2}}`
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- Calculate a BLAKE2 checksum from `stdin`:
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`{{command}} | b2sum`
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- Read a file of BLAKE2 sums and filenames and verify all files have matching checksums:
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`b2sum --check {{path/to/file.b2}}`
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- Only show a message for missing files or when verification fails:
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`b2sum --check --quiet {{path/to/file.b2}}`
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- Only show a message when verification fails, ignoring missing files:
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`b2sum --ignore-missing --check --quiet {{path/to/file.b2}}`
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