b2sum (1)

NAME

b2sum - compute and check BLAKE2 message digest

SYNOPSIS

b2sum [,OPTION/]... [,FILE/]...

DESCRIPTION

Print or check BLAKE2 (512-bit) checksums.

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

-b, --binary

read in binary mode

-c, --check

read BLAKE2 sums from the FILEs and check them

-l, --length

digest length in bits; must not exceed the maximum for the blake2 algorithm and must be a multiple of 8

--tag

create a BSD-style checksum

-t, --text

read in text mode (default)

The following five options are useful only when verifying checksums:

--ignore-missing

don't fail or report status for missing files

--quiet

don't print OK for each successfully verified file

--status

don't output anything, status code shows success

--strict

exit non-zero for improperly formatted checksum lines

-w, --warn

warn about improperly formatted checksum lines

--help

display this help and exit

--version

output version information and exit

The sums are computed as described in RFC 7693. When checking, the input should be a former output of this program. The default mode is to print a line with checksum, a space, a character indicating input mode ('*' for binary, ' ' for text or where binary is insignificant), and name for each FILE.

AUTHOR

Written by Padraig Brady and Samuel Neves.

REPORTING BUGS

GNU coreutils online help: <www.gnu.org/software/coreutils>
Report b2sum translation bugs to <translationproject.org/team>

COPYRIGHT

Copyright © 2016 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <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: <www.gnu.org/software/coreutils/b2sum>
or available locally via: info aq(coreutils) b2sum invocationaq