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SHA1SUM(1) User Commands SHA1SUM(1)
NAME
sha1sum - compute and check SHA1 message digest
SYNOPSIS
sha1sum [OPTION] [FILE]...
sha1sum [OPTION] --check [FILE]
DESCRIPTION
Print or check SHA1 (160-bit) checksums. With no FILE,
or when FILE is -, read standard input.
-b, --binary
read files in binary mode (default on DOS/Win-
dows)
-c, --check
check SHA1 sums against given list
-t, --text
read files in text mode (default)
The following two options are useful only when verifying
checksums:
--status
don't output anything, status code shows success
-w, --warn
warn about improperly formated checksum lines
--help display this help and exit
--version
output version information and exit
The sums are computed as described in FIPS-180-1. When
checking, the input should be a former output of this
program. The default mode is to print a line with
checksum, a character indicating type (`*' for binary, `
' for text), and name for each FILE.
AUTHOR
Written by Ulrich Drepper and Scott Miller.
REPORTING BUGS
Report bugs to <bug-coreutils@gnu.org>.
COPYRIGHT
Copyright (C) 2004 Free Software Foundation, Inc.
This is free software; see the source for copying condi-
tions. There is NO warranty; not even for MERCHANTABIL-
ITY or FITNESS FOR A PARTICULAR PURPOSE.
SEE ALSO
The full documentation for sha1sum is maintained as a
Texinfo manual. If the info and sha1sum programs are
properly installed at your site, the command
info sha1sum
should give you access to the complete manual.
sha1sum 5.3.0 November 2004 SHA1SUM(1)
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