SUM(1) User Commands SUM(1)

sum - checksum and count the blocks in a file

sum [OPTION]... [FILE]...

Print or check BSD (16-bit) checksums.

With no FILE, or when FILE is -, read standard input.

use BSD sum algorithm (the default), use 1K blocks
use System V sum algorithm, use 512 bytes blocks
display this help and exit
output version information and exit

Written by Kayvan Aghaiepour and David MacKenzie.

GNU coreutils online help: https://www.gnu.org/software/coreutils/
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Copyright © 2022 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later https://gnu.org/licenses/gpl.html.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.

Full documentation https://www.gnu.org/software/coreutils/sum
or available locally via: info '(coreutils) sum invocation'

April 2022 GNU coreutils 9.1