sha256sum - compute and check SHA256 message digest


   sha256sum [OPTION]... [FILE]...


   Print or check SHA256 (256-bit) checksums.

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

   -b, --binary
          read in binary mode

   -c, --check
          read SHA256 sums from the FILEs and check them

   --tag  create a BSD-style checksum

   -t, --text
          read in text mode (default)

   The following five options are useful only when verifying checksums:
          don't fail or report status for missing files

          don't print OK for each successfully verified file

          don't output anything, status code shows success

          exit non-zero for improperly formatted checksum lines

   -w, --warn
          warn about improperly formatted checksum lines

   --help display this help and exit

          output version information and exit

   The  sums  are computed as described in FIPS-180-2.  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.


   Written by Ulrich Drepper, Scott Miller, and David Madore.


   GNU coreutils online help: <>
   Report          sha256sum          translation          bugs         to


   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) sha2 utilities'

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