SUM(1) SUM(1) sum - checksum and count the blocks in a file sum []... []... Print or check BSD (16-bit) checksums. , -, . -r use BSD sum algorithm (the default), use 1K blocks -s, --sysv use System V sum algorithm, use 512 bytes blocks --help --version Kayvan Aghaiepour David MacKenzie. GNU coreutils: (C) 2023 Free Software Foundation, Inc. GPLv3+: GNU GPL 3 . : . , . : info '(coreutils) sum invocation' Kristijan Velkovski ; GNU 3(GPLv3) . . , Kris Fremen . GNU coreutils 9.4 2024 SUM(1)