Section (1) b2sum
b2sum — compute and check BLAKE2 message digest
Print or check BLAKE2 (512−bit) checksums.
With no FILE, or when FILE is −, read standard input.
read in binary mode
read BLAKE2 sums from the FILEs and check them
digest length in bits; must not exceed the maximum for the blake2 algorithm and must be a multiple of 8
create a BSD−style checksum
read in text mode (default)
end each output line with NUL, not newline, and disable file name escaping
The following five options are useful only when verifying checksums:
don_zsingle_quotesz_t fail or report status for missing files
don_zsingle_quotesz_t print OK for each successfully verified file
don_zsingle_quotesz_t output anything, status code shows success
exit non−zero for improperly formatted checksum lines
warn about improperly formatted checksum lines
display this help and exit
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 (_zsingle_quotesz_*_zsingle_quotesz_ for binary, _zsingle_quotesz_ _zsingle_quotesz_ for text or where binary is insignificant), and name for each FILE.
GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
Report any translation bugs to <https://translationproject.org/team/>
Full documentation <https://www.gnu.org/software/coreutils/b2sum>
or available locally via: info _zsingle_quotesz_(coreutils) b2sum invocation_zsingle_quotesz_
Copyright © 2019 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.