tldr/pages/linux/sha1sum.md
2016-01-20 03:45:42 -08:00

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# sha1sum
> Calculate SHA1 cryptographic checksums.
- Calculate the SHA1 checksum for a file:
`sha1sum {{filename1}}`
- Calculate SHA1 checksums for multiple files:
`sha1sum {{filename1}} {{filename2}}`
- Read a file of SHA1 sums and verify all files have matching checksums:
`sha1sum -c {{filename.sha1}}`