1SHA256SUM(1)                     User Commands                    SHA256SUM(1)
2
3
4

NAME

6       sha256sum - compute and check SHA256 message digest
7

SYNOPSIS

9       sha256sum [OPTION] [FILE]...
10

DESCRIPTION

12       Print  or check SHA256 (256-bit) checksums.  With no FILE, or when FILE
13       is -, read standard input.
14
15       -b, --binary
16              read in binary mode
17
18       -c, --check
19              read SHA256 sums from the FILEs and check them
20
21       -t, --text
22              read in text mode (default)
23
24   The following two options are useful only when verifying checksums:
25       --status
26              don't output anything, status code shows success
27
28       -w, --warn
29              warn about improperly formatted checksum lines
30
31       --help display this help and exit
32
33       --version
34              output version information and exit
35
36       The sums are computed as described in FIPS-180-2.  When  checking,  the
37       input  should  be a former output of this program.  The default mode is
38       to print a line with checksum, a character  indicating  type  (`*'  for
39       binary, ` ' for text), and name for each FILE.
40

AUTHOR

42       Written by Ulrich Drepper, Scott Miller, and David Madore.
43

REPORTING BUGS

45       Report bugs to <bug-coreutils@gnu.org>.
46

48       Copyright © 2007 Free Software Foundation, Inc.
49       This  is  free  software.   You may redistribute copies of it under the
50       terms      of      the      GNU      General       Public       License
51       <http://www.gnu.org/licenses/gpl.html>.   There  is NO WARRANTY, to the
52       extent permitted by law.
53

SEE ALSO

55       The full documentation for sha256sum is maintained as a Texinfo manual.
56       If the info and sha256sum programs are properly installed at your site,
57       the command
58
59              info sha256sum
60
61       should give you access to the complete manual.
62
63
64
65GNU coreutils 6.9                 March 2008                      SHA256SUM(1)
Impressum