Linux Command Library
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basic
Basic
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Tips

sum

checksum and count the blocks in a file

- Compute a checksum with BSD-compatible algorithm and 1024-byte blocks:
sum [file]

- Compute a checksum with System V-compatible algorithm and 512-byte blocks:
sum --sysv [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
-s, --sysv
use System V sum algorithm, use 512 bytes blocks
--help
display this help and exit
--version
output version information and exit

Written by Kayvan Aghaiepour and David MacKenzie.

GNU coreutils online help: <http://www.gnu.org/software/coreutils/> Report sum translation bugs to <http://translationproject.org/team/>

Copyright © 2016 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://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.

Full documentation at: <http://www.gnu.org/software/coreutils/sum> or available locally via: info '(coreutils) sum invocation'

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