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24 lines
647 B
Markdown
24 lines
647 B
Markdown
# sha1sum
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> Calculate SHA1 cryptographic checksums.
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> More information: <https://www.gnu.org/software/coreutils/sha1sum>.
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- Calculate the SHA1 checksum for a file:
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`sha1sum {{path/to/file}}`
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- Calculate SHA1 checksums for multiple files:
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`sha1sum {{path/to/file1}} {{path/to/file2}}`
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- Calculate and save the list of SHA1 checksums to a file:
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`sha1sum {{path/to/file1}} {{path/to/file2}} > {{path/to/file.sha1}}`
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- Read a file of SHA1 sums and verify all files have matching checksums:
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`sha1sum --check {{path/to/file.sha1}}`
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- Only show a message for files for which verification fails:
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`sha1sum --check --quiet {{path/to/file.sha1}}`
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