Linux Command Library
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sha512sum

compute and check SHA512 message digest

- Calculate the SHA512 checksum for a file:
sha512sum [filename1]

- Calculate SHA512 checksums for multiple files:
sha512sum [filename1] [filename2]

- Read a file of SHA512 sums and verify all files have matching checksums:
sha512sum -c [filename.sha512]

sha512sum [,OPTION/]... [,FILE/]...

Print or check SHA512 (512-bit) checksums.

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

-b, --binary
read in binary mode
-c, --check
read SHA512 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:

--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 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: <http://www.gnu.org/software/coreutils/> Report sha512sum 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/sha512sum> or available locally via: info '(coreutils) sha2 utilities'

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