5aded36978
It is annoying when we have dead links on fd.o. Add project='man-pages|die-net|archlinux' to <citerefentry>-ies. In generated html, add external links to http://man7.org/linux/man-pages/man, http://linux.die.net/man/, https://www.archlinux.org/. By default, pages in sections 2 and 4 go to man7, since Michael Kerrisk is the autorative source on kernel related stuff. The rest of links goes to linux.die.net, because they have the manpages. Except for the pacman stuff, since it seems to be only available from archlinux.org. Poor gummiboot gets no link, because gummitboot(8) ain't to be found on the net. According to common wisdom, that would mean that it does not exist. But I have seen Kay using it, so I know it does, and deserves to be found. Can somebody be nice and put it up somewhere?
180 lines
7.8 KiB
XML
180 lines
7.8 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
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used to query a system password or passphrase from the
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user, using a question message specified on the
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command line. When run from a TTY it will query a
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password on the TTY and print it to standard output. When run
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with no TTY or with <option>--no-tty</option> it will
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query the password system-wide and allow active users
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to respond via several agents. The latter is
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only available to privileged processes.</para>
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<para>The purpose of this tool is to query system-wide
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passwords -- that is passwords not attached to a
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specific user account. Examples include: unlocking
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encrypted hard disks when they are plugged in or at
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boot, entering an SSL certificate passphrase for web
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and VPN servers.</para>
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<para>Existing agents are: a boot-time password agent
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asking the user for passwords using Plymouth; a
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boot-time password agent querying the user directly on
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the console; an agent requesting 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
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session; a command line agent which can be started
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temporarily to process queued password requests; a TTY
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agent that is temporarily spawned 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
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according to 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
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press TAB to hide the asterisks normally shown for
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each character typed. Pressing Backspace as first key
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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
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alongside the password query, which may
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be used in all agents supporting
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graphical display. The icon name
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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
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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
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timeout in seconds. Defaults to
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90s. A timeout of 0 waits indefinitely.
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</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
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on current TTY even if one is
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available. Always use agent
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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
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cached passwords, i.e. passwords
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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
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conjunction with
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<option>--accept-cached</option>
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accept multiple passwords. This will
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output one password per
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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
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code 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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