# sha512sum > Calculate SHA512 cryptographic checksums. > More information: . - Calculate the SHA512 checksum for a file: `sha512sum {{filename1}}` - Calculate SHA512 checksums for multiple files: `sha512sum {{filename1}} {{filename2}}` - Calculate and save the list of SHA512 checksums to a file: `sha512sum {{filename1}} {{filename2}} > {{filename.sha512}}` - Read a file of SHA512 sums and verify all files have matching checksums: `sha512sum --check {{filename.sha512}}` - Only show a message for files for which verification fails: `sha512sum --check --quiet {{filename.sha512}}`