sum - Checksum and count the blocks in a file.

       Checksum and count the blocks in a file.

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

       sum - Checksum and count the blocks in a file.

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

-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

sum [-r ] [-s|--sysv] [-h|--help] [-V|--version] [file]

       v0.0.30

                                                   sum 0.0.30                                             sum(1)