2014-07-22 10:56:22 +01:00
|
|
|
# sha256sum
|
|
|
|
|
|
2016-01-07 17:31:27 +00:00
|
|
|
> Calculate SHA256 cryptographic checksums.
|
2021-04-02 20:05:11 +01:00
|
|
|
> More information: <https://www.gnu.org/software/coreutils/manual/html_node/sha2-utilities.html>.
|
2014-07-22 10:56:22 +01:00
|
|
|
|
2016-01-20 11:45:42 +00:00
|
|
|
- Calculate the SHA256 checksum for a file:
|
2014-07-22 10:56:22 +01:00
|
|
|
|
|
|
|
|
`sha256sum {{filename1}}`
|
2016-01-20 11:45:42 +00:00
|
|
|
|
2017-02-13 16:50:33 +00:00
|
|
|
- Calculate SHA256 checksums for multiple files:
|
2016-01-20 11:45:42 +00:00
|
|
|
|
2014-07-22 10:56:22 +01:00
|
|
|
`sha256sum {{filename1}} {{filename2}}`
|
|
|
|
|
|
2020-12-18 14:17:54 +00:00
|
|
|
- Calculate and save the list of SHA256 checksums to a file:
|
2020-12-18 14:14:04 +00:00
|
|
|
|
|
|
|
|
`sha256sum {{filename1}} {{filename2}} > {{filename.sha256}}`
|
|
|
|
|
|
2016-01-07 17:31:27 +00:00
|
|
|
- Read a file of SHA256 sums and verify all files have matching checksums:
|
2014-07-22 10:56:22 +01:00
|
|
|
|
2020-12-18 14:04:57 +00:00
|
|
|
`sha256sum --check {{filename.sha256}}`
|
2020-12-18 12:31:59 +00:00
|
|
|
|
2020-12-20 19:34:27 +00:00
|
|
|
- Only show a message for files for which verification fails:
|
2020-12-18 12:31:59 +00:00
|
|
|
|
2020-12-18 14:04:57 +00:00
|
|
|
`sha256sum --check --quiet {{filename.sha256}}`
|
