SUM(1) User Commands SUM(1)
sum – checksum and count the blocks in a file
sum [OPTION]… [FILE]…
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
use System V sum algorithm, use 512 bytes blocks
–help display this help and exit
output version information and exit
Written by Kayvan Aghaiepour and David MacKenzie.
GNU coreutils online help:
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Copyright © 2016 Free Software Foundation, Inc. License GPLv3+: GNU
GPL version 3 or later
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Full documentation at:
or available locally via: info ‘(coreutils) sum invocation’
GNU coreutils 8.25 February 2016 SUM(1)