1SHA1SUM(1)                       User Commands                      SHA1SUM(1)
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NAME

6       sha1sum - compute and check SHA1 message digest
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SYNOPSIS

9       sha1sum [OPTION] [FILE]...
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DESCRIPTION

12       Print or check SHA1 (160-bit) checksums.  With no FILE, or when FILE is
13       -, read standard input.
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15       -b, --binary
16              read in binary mode
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18       -c, --check
19              read SHA1 sums from the FILEs and check them
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21       -t, --text
22              read in text mode (default)
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24   The following two options are useful only when verifying checksums:
25       --status
26              don't output anything, status code shows success
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28       -w, --warn
29              warn about improperly formatted checksum lines
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31       --help display this help and exit
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33       --version
34              output version information and exit
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36       The sums are computed as described in FIPS-180-1.  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.
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AUTHOR

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

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

55       The full documentation for sha1sum is maintained as a  Texinfo  manual.
56       If  the  info and sha1sum programs are properly installed at your site,
57       the command
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59              info sha1sum
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61       should give you access to the complete manual.
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65GNU coreutils 6.9                 March 2008                        SHA1SUM(1)
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