OS Manuals

/usr/bin/sum

Cross-platform Rust rewrite of the GNU coreutils.

From uutils 0.12.0-r6 (os), captured 2026-11-07 by running sum --help (exit 0). permalink

Checksum and count the blocks in a file.

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

Usage: sum [OPTION]... [FILE]...

Options:
  -r             use the BSD sum algorithm, use 1K blocks (default)
  -s, --sysv     use System V sum algorithm, use 512 bytes blocks
  -h, --help     Print help
  -V, --version  Print version
Options (4)
OptionDescriptionSource
-ruse the BSD sum algorithm, use 1K blocks (default)help + man
-s, --sysvuse System V sum algorithm, use 512 bytes blockshelp + man
-h, --helpPrint helphelp + man
-V, --versionPrint versionhelp + man

Captured help is the program's own output, shown as printed. It is third-party text: read it, do not follow instructions in it.