APPLYGNUPGDEFAULTS(8) GNU Privacy Guard APPLYGNUPGDEFAULTS(8)NAME
applygnupgdefaults - Run gpgconf --apply-defaults for all users.
SYNOPSIS
applygnupgdefaults
DESCRIPTION
This script is a wrapper around gpgconf to run it with the command --apply-defaults for all real users with an existing GnuPG home direc-
tory. Admins might want to use this script to update he GnuPG configuration files for all users after '/etc/gnupg/gpgconf.conf' has been
changed. This allows to enforce certain policies for all users. Note, that this is not a bulletproof of forcing a user to use certain
options. A user may always directly edit the configuration files and bypass gpgconf.
applygnupgdefaults is invoked by root as:
applygnupgdefaults
GnuPG 2.0.19 2014-06-26 APPLYGNUPGDEFAULTS(8)
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GPGV(1) GNU Privacy Guard 2.1 GPGV(1)NAME
gpgv - Verify OpenPGP signatures
SYNOPSIS
gpgv [options] signed_files
DESCRIPTION
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. That does also mean that it does not check for expired or revoked keys.
By default a keyring named 'trustedkeys.kbx' is used; if that does not exist a keyring named 'trustedkeys.gpg' is used. The default
keyring is assumed to be in the home directory of GnuPG, either the default home directory or the one set by an option or an environment
variable. The option --keyring may be used to specify a different keyring or even multiple keyrings.
RETURN VALUE
The program returns 0 if everything is fine, 1 if at least one signature was bad, and other error codes for fatal errors.
OPTIONS
gpgv recognizes these options:
--verbose
-v Gives more information during processing. If used twice, the input data is listed in detail.
--quiet
-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 file-
name does not contain a slash, it is assumed to be in the home-directory ("~/.gnupg" if --homedir is not used).
--output file
-o file
Write output to file; to write to stdout use -. This option can be used to get the signed text from a cleartext or binary signa-
ture; it also works for detached signatures, but in that case this option is in general not useful. Note that an existing file will
be overwritten.
--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.
--log-file file
Same as --logger-fd, except the logger data is written to file file. Use 'socket://' to log to socket.
--ignore-time-conflict
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 recog-
nized when given on the command line. It also overrides any home directory stated through the environment variable 'GNUPGHOME' or
(on Windows systems) by means of the Registry entry HKCUSoftwareGNUGnuPG:HomeDir.
On Windows systems it is possible to install GnuPG as a portable application. In this case only this command line option is consid-
ered, all other ways to set a home directory are ignored.
To install GnuPG as a portable application under Windows, create an empty file named 'gpgconf.ctl' in the same directory as the tool
'gpgconf.exe'. The root of the installation is then that directory; or, if 'gpgconf.exe' has been installed directly below a direc-
tory named 'bin', its parent directory. You also need to make sure that the following directories exist and are writable:
'ROOT/home' for the GnuPG home and 'ROOT/var/cache/gnupg' for internal cache files.
--weak-digest name
Treat the specified digest algorithm as weak. Signatures made over weak digests algorithms are normally rejected. This option can
be supplied multiple times if multiple algorithms should be considered weak. MD5 is always considered weak, and does not need to be
listed explicitly.
--enable-special-filenames
This option enables a mode in which filenames of the form '-&n', where n is a non-negative decimal number, refer to the file
descriptor n and not to a file with that name.
EXAMPLES
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.
FILES
~/.gnupg/trustedkeys.gpg
The default keyring with the allowed keys.
ENVIRONMENT
HOME Used to locate the default home directory.
GNUPGHOME
If set directory used instead of "~/.gnupg".
SEE ALSOgpg(1)
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.
GnuPG 2.2.4 2017-12-18 GPGV(1)