sum(1)

sum1

Checksum and count the blocks in a file

Usage

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

Overview

Print or check BSD (16-bit) checksums. Legacy interface to the cksum(1) utility.

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

Releases

19 releases since Debian 1.1 (Buzz); the text changed 15 times.

  1. 1.1
  2. 1.2–2.1
  3. 2.2
  4. 3.0
  5. 3.1
  6. 4.0
  7. 5.0
  8. 6.0
  9. 7
  10. 8
  11. 9
  12. 10
  13. 11
  14. 12
  15. 13
  16. Arch

Author

Written by Kayvan Aghaiepour and David MacKenzie.

Reporting bugs

Report bugs to: <[email protected]>.
Report any translation bugs to: <https://translationproject.org/team/>.
GNU coreutils home page: <https://www.gnu.org/software/coreutils/>
General help using GNU software: <https://www.gnu.org/gethelp/>

From coreutils 9.12-2 in Arch Linux 2026-11-01. Parsed by carta from the page's man source.