mirror of https://github.com/CrimsonTome/tldr.git
25 lines
673 B
Markdown
25 lines
673 B
Markdown
# sha256sum
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> Calculate SHA256 cryptographic checksums.
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> More information: <https://www.gnu.org/software/coreutils/manual/html_node/sha2-utilities.html>.
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- Calculate the SHA256 checksum for a file:
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`sha256sum {{filename1}}`
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- Calculate SHA256 checksums for multiple files:
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`sha256sum {{filename1}} {{filename2}}`
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- Calculate and save the list of SHA256 checksums to a file:
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`sha256sum {{filename1}} {{filename2}} > {{filename.sha256}}`
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- Read a file of SHA256 sums and verify all files have matching checksums:
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`sha256sum --check {{filename.sha256}}`
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- Only show a message for files for which verification fails:
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`sha256sum --check --quiet {{filename.sha256}}`
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