sum(feed) - phpMan

SUM(1)                           User Commands                          SUM(1)
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 sum translation bugs to <https://translationproject.org/team/>;
COPYRIGHT
       Copyright  (C) 2018 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 at: <https://www.gnu.org/software/coreutils/sum>;
       or available locally via: info '(coreutils) sum invocation'
GNU coreutils 8.30                 July 2018                            SUM(1)