.\" DO NOT MODIFY THIS FILE!  It was generated by help2man 1.35.
.TH SHA1SUM "1" "March 2007" "GNU coreutils 6.9" "User Commands"
.SH NAME
sha1sum \- compute and check SHA1 message digest
.SH SYNOPSIS
.B sha1sum
[\fIOPTION\fR] [\fIFILE\fR]...
.SH DESCRIPTION
.\" Add any additional description here
.PP
Print or check SHA1 (160\-bit) checksums.
With no FILE, or when FILE is \-, read standard input.
.TP
\fB\-b\fR, \fB\-\-binary\fR
read in binary mode
.TP
\fB\-c\fR, \fB\-\-check\fR
read SHA1 sums from the FILEs and check them
.TP
\fB\-t\fR, \fB\-\-text\fR
read in text mode (default)
.SS "The following two options are useful only when verifying checksums:"
.TP
\fB\-\-status\fR
don't output anything, status code shows success
.TP
\fB\-w\fR, \fB\-\-warn\fR
warn about improperly formatted checksum lines
.TP
\fB\-\-help\fR
display this help and exit
.TP
\fB\-\-version\fR
output version information and exit
.PP
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.
.SH AUTHOR
Written by Ulrich Drepper, Scott Miller, and David Madore.
.SH "REPORTING BUGS"
Report bugs to <bug\-coreutils@gnu.org>.
.SH COPYRIGHT
Copyright \(co 2007 Free Software Foundation, Inc.
.br
This is free software.  You may redistribute copies of it under the terms of
the GNU General Public License <http://www.gnu.org/licenses/gpl.html>.
There is NO WARRANTY, to the extent permitted by law.
.SH "SEE ALSO"
The full documentation for
.B sha1sum
is maintained as a Texinfo manual.  If the
.B info
and
.B sha1sum
programs are properly installed at your site, the command
.IP
.B info sha1sum
.PP
should give you access to the complete manual.