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* *sum: update pages to make them consistent * shasum: remove redundant option * shasum: update page
36 lines
1.1 KiB
Markdown
36 lines
1.1 KiB
Markdown
# shasum
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> Calculate SHA cryptographic checksums.
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> More information: <https://manned.org/shasum>.
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- Calculate the SHA1 checksum for one or more files:
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`shasum {{path/to/file1 path/to/file2 ...}}`
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- Calculate the SHA checksum for one or more files with the specified algorithm:
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`shasum --algorithm {{1|224|256|384|512|512224|512256}} {{path/to/file1 path/to/file2 ...}}`
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- Calculate a SHA1 checksum from `stdin`:
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`{{command}} | shasum`
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- Calculate and save the list of SHA256 checksums to a file:
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`shasum --algorithm 256 {{path/to/file1 path/to/file2 ...}} > {{path/to/file.sha256}}`
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- Read a file of SHA checksums and filenames and verify all files have matching checksums (the algorithm will be automatically detected):
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`shasum --check {{path/to/file}}`
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- Only show a message for missing files or when verification fails:
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`shasum --check --quiet {{path/to/file}}`
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- Only show a message when verification fails, ignoring missing files:
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`shasum --ignore-missing --check --quiet {{path/to/file}}`
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- Check a known SHA checksum of a file:
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`echo {{known_sha_checksum_of_the_file}} {{path/to/file}} | shasum --check`
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