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b2sum

 
Calculate BLAKE2 cryptographic checksums. More information: https://www.gnu.org/software/coreutils/b2sum.
 
  • Calculate the BLAKE2 checksum for a file:
     
    b2sum {{path/to/file}}
     
  • Calculate BLAKE2 checksums for multiple files:
     
    b2sum {{path/to/file1}} {{path/to/file2}}
     
  • Calculate the BLAKE2 checksum from stdin:
     
    {{some_command}} | b2sum
     
  • Read a file of BLAKE2 sums and filenames and verify all files have matching checksums:
     
    b2sum --check {{path/to/file.b2}}
     
  • Only show a message for missing files or when verification fails:
     
    b2sum --check --quiet {{path/to/file.b2}}
     
  • Only show a message for files for which verification fails, ignoring missing files:
     
    b2sum --ignore-missing --check --quiet {{path/to/file.b2}}

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