tldr/pages/linux/b2sum.md

b2sum

Calculate BLAKE2 cryptographic checksums.

• Calculate the BLAKE2 checksum for a file:

b2sum {{filename1}}

• Calculate BLAKE2 checksums for multiple files:

b2sum {{filename1}} {{filename2}}

• Read a file of BLAKE2 sums and filenames and verify all files have matching checksums:

b2sum -c {{filename.b2}}

• Calculate the BLAKE2 checksum from stdin:

{{somecommand}} | shasum