sum — checksum and count the blocks in a file
sum
[OPTION
...] [FILE
...]
Print checksum and block counts for each FILE.
−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
With no FILE, or when FILE is −, read standard input.
Report sum bugs to bug−coreutils@gnu.org
GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
General help using GNU software: <http://www.gnu.org/gethelp/>
Report sum translation bugs to <http://translationproject.org/team/>