MULTIGEST(1)

NAME
multigest - calculate multiple message digests simultaneously

SYNOPSIS
multigest -r [-a algorithms] [-c digestfile] [-F output-format] [-o output] [-S output-separator] [-s /regex/replacement/] [file ...]

DESCRIPTION
The multigest utility calculates message digests of files or, if no file is specified, standard input. The list of possible algorithms is given in the libmultigest(3) manual page.

The multigest utility is a simple wrapper for the various different algorithm implementations, which are located in the standard C library, and was designed to be scalable as new message digest algorithms are developed.

The multigest utility uses the libmultigest(3) library.

The following options are available:

-a algorithms
    specify a comma-separated list of algorithms to be calculated

-c stored-digest-file
    check, or verify, a file containing previously-generated digests

-F output-format
    print the output in the format requested. Possible values are “openssl”, “digest”, and “multigest”. The default is “multigest” which means that any replacement text is printed in a separate field.

-o output-file
    write the calculated digests to the output file

-r  shorthand for input substitution for the RCS Identifiers “Id” and “NetBSD”

-S output-separator
    separate each individual digest on output with the provided string. The output separator defaults to the null string, i.e. no separator.

-s /regex/replacement/
    before calculating digests, run the following transformation on the input to normalise any input. Using this, the effects of expanding version control system identifiers is nullified.

If no input files are provided, input is taken from standard input.

EXIT STATUS

SEE ALSO
libmultigest(3)

HISTORY
The multigest utility first appeared in NetBSD 7.0.

AUTHORS
The multigest utility was written by Alistair G. Crooks <agc@netbsd.org>.