SHA1SUM(1)

NAME
sha1sum - compute and check SHA1 message digest

SYNOPSIS
sha1sum [OPTION] [FILE]...

DESCRIPTION

Print or check SHA1 (160-bit) checksums. With no FILE, or when FILE is -, read standard input.

-b, --binary
    read in binary mode

-c, --check
    read SHA1 sums from the FILEs and check them

-t, --text
    read 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 formatted 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 © 2006 Free Software Foundation, Inc.
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.

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.