2014-07-22 17:56:22 +08:00
|
|
|
# sha256sum
|
|
|
|
|
|
2016-01-07 18:31:27 +01:00
|
|
|
> Calculate SHA256 cryptographic checksums.
|
2021-04-02 21:05:11 +02:00
|
|
|
> More information: <https://www.gnu.org/software/coreutils/manual/html_node/sha2-utilities.html>.
|
2014-07-22 17:56:22 +08:00
|
|
|
|
2016-01-20 03:45:42 -08:00
|
|
|
- Calculate the SHA256 checksum for a file:
|
2014-07-22 17:56:22 +08:00
|
|
|
|
|
|
|
|
`sha256sum {{filename1}}`
|
2016-01-20 03:45:42 -08:00
|
|
|
|
2017-02-13 17:50:33 +01:00
|
|
|
- Calculate SHA256 checksums for multiple files:
|
2016-01-20 03:45:42 -08:00
|
|
|
|
2014-07-22 17:56:22 +08:00
|
|
|
`sha256sum {{filename1}} {{filename2}}`
|
|
|
|
|
|
2020-12-18 15:17:54 +01:00
|
|
|
- Calculate and save the list of SHA256 checksums to a file:
|
2020-12-18 15:14:04 +01:00
|
|
|
|
|
|
|
|
`sha256sum {{filename1}} {{filename2}} > {{filename.sha256}}`
|
|
|
|
|
|
2016-01-07 18:31:27 +01:00
|
|
|
- Read a file of SHA256 sums and verify all files have matching checksums:
|
2014-07-22 17:56:22 +08:00
|
|
|
|
2020-12-18 15:04:57 +01:00
|
|
|
`sha256sum --check {{filename.sha256}}`
|
2020-12-18 13:31:59 +01:00
|
|
|
|
2020-12-20 20:34:27 +01:00
|
|
|
- Only show a message for files for which verification fails:
|
2020-12-18 13:31:59 +01:00
|
|
|
|
2020-12-18 15:04:57 +01:00
|
|
|
`sha256sum --check --quiet {{filename.sha256}}`
|
