sum (1) Linux Manual Page
NAME
sum – checksum and count the blocks in a file
SYNOPSIS
sum [,OPTION/]… [,FILE/]…
DESCRIPTION
Print checksum and block counts for each FILE.
With no FILE, or when FILE is -, read standard input.
-r- use BSD sum algorithm, 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
AUTHOR
Written by Kayvan Aghaiepour and David MacKenzie.
REPORTING BUGS
GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
Report any translation bugs to <https://translationproject.org/team/>
COPYRIGHT
Copyright © 2020 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.
SEE ALSO
Full documentation <https://www.gnu.org/software/coreutils/sum>
or available locally via: info ‘(coreutils) sum invocation’