---
syntax: markdown
tags: [tldr, common]
source: https://github.com/tldr-pages/tldr.git
---
# sha224sum

> Calculate SHA224 cryptographic checksums.
> More information: <https://www.gnu.org/software/coreutils/manual/html_node/sha2-utilities.html>.

- Calculate the SHA224 checksum for one or more files:

`sha224sum {{path/to/file1 path/to/file2 ...}}`

- Calculate and save the list of SHA224 checksums to a file:

`sha224sum {{path/to/file1 path/to/file2 ...}} > {{path/to/file.sha224}}`

- Calculate a SHA224 checksum from `stdin`:

`{{command}} | sha224sum`

- Read a file of SHA224 checksums and filenames and verify all files have matching checksums:

`sha224sum {{[-c|--check]}} {{path/to/file.sha224}}`

- Only show a message for missing files or when verification fails:

`sha224sum {{[-c|--check]}} --quiet {{path/to/file.sha224}}`

- Only show a message when verification fails, ignoring missing files:

`sha224sum --ignore-missing {{[-c|--check]}} --quiet {{path/to/file.sha224}}`

- Check a known SHA224 checksum of a file:

`echo {{known_sha224_checksum_of_the_file}} {{path/to/file}} | sha224sum {{[-c|--check]}}`
