sum

Compute a checksum with BSD-compatible algorithm and 1024-byte blocks

$ sum [file]

Compute a checksum with System V-compatible algorithm and 512-byte blocks

$ sum --sysv [file]

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

Print or check BSD (16-bit) checksums.

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

-r

use BSD sum algorithm (the default), use 1K blocks

-s, --sysv

use System V sum algorithm, use 512 bytes blocks

--help

display this help and exit

--version

output version information and exit

GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
Report any translation bugs to <https://translationproject.org/team/>

Copyright © 2021 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'

Written by Kayvan Aghaiepour and David MacKenzie.