GPG-MAIL-TUBE(1) GNU Privacy Guard 2.4 GPG-MAIL-TUBE(1)
NAME
gpg-mail-tube - Encrypt rfc822 formatted mail in a pipeline
SYNOPSIS
gpg-mail-tube [options] recipients
DESCRIPTION
gpg-mail-tube takes RFC-822 formatted mail on stdin and turns it into a
PGP/MIME encrypted mail which is then written to stdout.
The recipients must be plain mail addresses (e.g. foo@example.org) and
should in general list the To and Cc addresses contained in the mail.
OPTIONS
gpg-mail-tube understands these options:
--verbose
-v Enable extra informational output.
--quiet
-q Try to be as quiet as possible.
--log-file file
Write log output to file. Use ‘socket://’ to log to a socket.
--no-stderr
Suppresses all output to stderr. This is useful for callers
which don't distinguish stdout and stderr. To get diagnostics
the option --log-file can be used.
--header name=value
Add the mail header "name: value" to the output.
--setenv name=value
Put the given environment string into the environment of this
process and of the called gpg. This option is required if there
is no other way to set the environemt.
--as-attach
-a Do not write a PGP/MIME mail but emit a simple body along with an
attachment containing the encrypted body of the input mail. If
the input was a plain text message a simple encrypted file will
be attached. If the input was a multipart MIME message the en-
crypted file is of type message/rfc822.
--gpg gpgcmd
Use the specified command gpgcmd instead of gpg.
--vsd Use the gpg from a GnuPG VS-Desktop® AppImage. The AppImage is
started if it is not running. A symlink named
‘~/.gnupg-vsd/gnupg-vs-desktop.AppImage’ needs to link to the ac-
tually to be used AppImage.
--version
Print version of the program and exit.
--help Display a brief help page and exit.
EXAMPLES
The following options can be used in a local transport rule of the Exim
MTA which assumes that that check_local_user has been used in the
router.
transport_filter = /usr/local/bin/gpg-mail-tube --setenv HOME=${home} \
--no-stderr -- $pipe_addresses
For a remote transport the use of size_addition and an explicit setting
of the user and its home directory might be required.
DIAGNOSTICS
The program returns 0 on a successful encryption or a non-zero value on
error. Note that on error some output might have already been written
to stdout.
SEE ALSO
gpg(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 2.4.7 2024-11-22 GPG-MAIL-TUBE(1)
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