1 .\" DO NOT MODIFY THIS FILE! It was generated by help2man 1.35.
2 .TH SHA1SUM "1" "March 2012" "GNU coreutils 8.16" "User Commands"
4 sha1sum \- compute and check SHA1 message digest
7 [\fIOPTION\fR]... [\fIFILE\fR]...
9 .\" Add any additional description here
11 Print or check SHA1 (160\-bit) checksums.
12 With no FILE, or when FILE is \-, read standard input.
14 \fB\-b\fR, \fB\-\-binary\fR
17 \fB\-c\fR, \fB\-\-check\fR
18 read SHA1 sums from the FILEs and check them
20 \fB\-t\fR, \fB\-\-text\fR
21 read in text mode (default)
22 .SS "The following three options are useful only when verifying checksums:"
25 don't print OK for each successfully verified file
28 don't output anything, status code shows success
30 \fB\-w\fR, \fB\-\-warn\fR
31 warn about improperly formatted checksum lines
34 with \fB\-\-check\fR, exit non\-zero for any invalid input
37 display this help and exit
40 output version information and exit
42 The sums are computed as described in FIPS\-180\-1. When checking, the input
43 should be a former output of this program. The default mode is to print
44 a line with checksum, a character indicating input mode ('*' for binary,
45 space for text), and name for each FILE.
47 Written by Ulrich Drepper, Scott Miller, and David Madore.
49 Report sha1sum bugs to bug\-coreutils@gnu.org
51 GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
53 General help using GNU software: <http://www.gnu.org/gethelp/>
55 Report sha1sum translation bugs to <http://translationproject.org/team/>
57 Copyright \(co 2012 Free Software Foundation, Inc.
58 License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
60 This is free software: you are free to change and redistribute it.
61 There is NO WARRANTY, to the extent permitted by law.
63 The full documentation for
65 is maintained as a Texinfo manual. If the
69 programs are properly installed at your site, the command
71 .B info coreutils \(aqsha1sum invocation\(aq
73 should give you access to the complete manual.