mirror of
https://github.com/systemd/systemd-stable.git
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12b42c7667
This did not really work out as we had hoped. Trying to do this upstream introduced several problems that probably makes it better suited as a downstream patch after all. At any rate, it is not releaseable in the current state, so we at least need to revert this before the release. * by adjusting the path to binaries, but not do the same thing to the search path we end up with inconsistent man-pages. Adjusting the search path too would be quite messy, and it is not at all obvious that this is worth the effort, but at any rate it would have to be done before we could ship this. * this means that distributed man-pages does not make sense as they depend on config options, and for better or worse we are still distributing man pages, so that is something that definitely needs sorting out before we could ship with this patch. * we have long held that split-usr is only minimally supported in order to boot, and something we hope will eventually go away. So before we start adding even more magic/effort in order to make this work nicely, we should probably question if it makes sense at all.
175 lines
6.2 KiB
XML
175 lines
6.2 KiB
XML
<?xml version='1.0'?> <!--*-nxml-*-->
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
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"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
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<!--
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This file is part of systemd.
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Copyright 2011 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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-->
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<refentry id="systemd-ask-password"
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xmlns:xi="http://www.w3.org/2001/XInclude">
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<refentryinfo>
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<title>systemd-ask-password</title>
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<productname>systemd</productname>
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<authorgroup>
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<author>
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<contrib>Developer</contrib>
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<firstname>Lennart</firstname>
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<surname>Poettering</surname>
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<email>lennart@poettering.net</email>
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</author>
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</authorgroup>
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</refentryinfo>
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<refmeta>
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<refentrytitle>systemd-ask-password</refentrytitle>
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<manvolnum>1</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>systemd-ask-password</refname>
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<refpurpose>Query the user for a system password</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<cmdsynopsis>
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<command>systemd-ask-password <arg choice="opt" rep="repeat">OPTIONS</arg> <arg choice="opt">MESSAGE</arg></command>
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</cmdsynopsis>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para><command>systemd-ask-password</command> may be used to query
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a system password or passphrase from the user, using a question
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message specified on the command line. When run from a TTY it will
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query a password on the TTY and print it to standard output. When
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run with no TTY or with <option>--no-tty</option> it will query
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the password system-wide and allow active users to respond via
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several agents. The latter is only available to privileged
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processes.</para>
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<para>The purpose of this tool is to query system-wide passwords
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-- that is passwords not attached to a specific user account.
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Examples include: unlocking encrypted hard disks when they are
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plugged in or at boot, entering an SSL certificate passphrase for
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web and VPN servers.</para>
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<para>Existing agents are: a boot-time password agent asking the
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user for passwords using Plymouth; a boot-time password agent
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querying the user directly on the console; an agent requesting
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password input via a
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<citerefentry project='man-pages'><refentrytitle>wall</refentrytitle><manvolnum>1</manvolnum></citerefentry>
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message; an agent suitable for running in a GNOME session; a
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command line agent which can be started temporarily to process
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queued password requests; a TTY agent that is temporarily spawned
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during
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<citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>
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invocations.</para>
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<para>Additional password agents may be implemented according to
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the <ulink
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url="http://www.freedesktop.org/wiki/Software/systemd/PasswordAgents">systemd
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Password Agent Specification</ulink>.</para>
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<para>If a password is queried on a TTY, the user may press TAB to
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hide the asterisks normally shown for each character typed.
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Pressing Backspace as first key achieves the same effect.</para>
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</refsect1>
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<refsect1>
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<title>Options</title>
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<para>The following options are understood:</para>
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<variablelist>
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<varlistentry>
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<term><option>--icon=</option></term>
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<listitem><para>Specify an icon name alongside the password
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query, which may be used in all agents supporting graphical
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display. The icon name should follow the <ulink
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url="http://standards.freedesktop.org/icon-naming-spec/icon-naming-spec-latest.html">XDG
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Icon Naming Specification</ulink>.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--timeout=</option></term>
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<listitem><para>Specify the query timeout in seconds. Defaults
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to 90s. A timeout of 0 waits indefinitely. </para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--echo</option></term>
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<listitem><para>Echo the user input instead of masking it.
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This is useful when using
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<filename>systemd-ask-password</filename> to query for
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usernames. </para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--no-tty</option></term>
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<listitem><para>Never ask for password on current TTY even if
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one is available. Always use agent system.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--accept-cached</option></term>
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<listitem><para>If passed, accept cached passwords, i.e.
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passwords previously typed in.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--multiple</option></term>
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<listitem><para>When used in conjunction with
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<option>--accept-cached</option> accept multiple passwords.
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This will output one password per line.</para></listitem>
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</varlistentry>
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<xi:include href="standard-options.xml" xpointer="help" />
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</variablelist>
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</refsect1>
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<refsect1>
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<title>Exit status</title>
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<para>On success, 0 is returned, a non-zero failure code
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otherwise.</para>
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</refsect1>
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<refsect1>
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<title>See Also</title>
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<para>
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<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<citerefentry project='die-net'><refentrytitle>plymouth</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry project='man-pages'><refentrytitle>wall</refentrytitle><manvolnum>1</manvolnum></citerefentry>
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</para>
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</refsect1>
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</refentry>
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