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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, Scott Miller, and David Madore.

Reporting Bugs

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

Copyright

Copyright (C) 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.

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