Provided by: gpgv_1.4.11-3ubuntu2_amd64 bug


       gpgv - Verify OpenPGP signatures


       gpgv [options] signed_files


       gpgv is an OpenPGP signature verification tool.

       This  program  is  actually  a  stripped-down  version  of gpg which is only able to check
       signatures. It is somewhat smaller than the fully-blown gpg  and  uses  a  different  (and
       simpler) way to check that the public keys used to make the signature are valid. There are
       no configuration files and only a few options are implemented.

       gpgv assumes that all keys in the keyring are trustworthy.  By default it uses  a  keyring
       named  `trustedkeys.gpg'  which is assumed to be in the home directory as defined by GnuPG
       or set by an option or an environment variable. An option may be used to  specify  another
       keyring or even multiple keyrings.


       The  program  returns  0  if  everything is fine, 1 if at least one signature was bad, and
       other error codes for fatal errors.


       gpgv recognizes these options:


       -v     Gives more information during processing. If used twice, the input data  is  listed
              in detail.


       -q     Try to be as quiet as possible.

       --keyring file
              Add  file  to the list of keyrings.  If file begins with a tilde and a slash, these
              are replaced by the HOME directory. If the filename does not contain a slash, it is
              assumed to be in the home-directory ("~/.gnupg" if --homedir is not used).

       --status-fd n
              Write special status strings to the file descriptor n.  See the file DETAILS in the
              documentation for a listing of them.

       --logger-fd n
              Write log output to file descriptor n and not to stderr.

              GnuPG normally checks that the timestamps associated with keys and signatures  have
              plausible values. However, sometimes a signature seems to be older than the key due
              to clock problems. This option turns these checks into warnings.

       --homedir dir
              Set the name of the home directory to dir. If this option is  not  used,  the  home
              directory  defaults to `~/.gnupg'.  It is only recognized when given on the command
              line.  It also overrides any home directory stated through the environment variable
              `GNUPGHOME'    or   (on   W32   systems)   by   means   of   the   Registry   entry


       gpgv pgpfile

       gpgv sigfile [datafile]
              Verify the signature of the file. The second form is used for detached  signatures,
              where  sigfile  is  the  detached  signature  (either  ASCII-armored or binary) and
              datafile contains the signed data; if datafile is "-" the signed data  is  expected
              on  stdin; if datafile is not given the name of the file holding the signed data is
              constructed by cutting off the extension (".asc", ".sig" or ".sign") from sigfile.


              The default keyring with the allowed keys.


       HOME   Used to locate the default home directory.

              If set directory used instead of "~/.gnupg".



       The full documentation for this tool is maintained as a Texinfo manual.  If GnuPG and  the
       info program are properly installed at your site, the command

         info gnupg

       should give you access to the complete manual including a menu structure and an index.