sum — checksum and count the blocks in a file

Examples (TL;DR)


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


Print checksum and block counts for each FILE.

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


use BSD sum algorithm, use 1K blocks

-s, --sysv

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.

Reporting Bugs

GNU coreutils online help: <>
Report any translation bugs to <>

See Also

Full documentation <>
or available locally via: info '(coreutils) sum invocation'

Referenced By

pmdashping(1), sum(n).

October 2019 GNU coreutils 8.31