Author: krejzi
Date: Fri Feb 15 12:47:10 2013
New Revision: 10157
Log:
Slightly modify Systemd page.
Modified:
branches/systemd/BOOK/chapter06/systemd.xml
Modified: branches/systemd/BOOK/chapter06/systemd.xml
==============================================================================
--- branches/systemd/BOOK/chapter06/systemd.xml Fri Feb 15 11:26:30 2013
(r10156)
+++ branches/systemd/BOOK/chapter06/systemd.xml Fri Feb 15 12:47:10 2013
(r10157)
@@ -46,44 +46,117 @@
--sysconfdir=/etc \
--localstatedir=/var \
--libexecdir=/usr/lib \
+ --docdir=/usr/share/doc/systemd-&systemd-version; \
--with-rootprefix= \
--with-rootlibdir=/lib \
--with-kbd-loadkeys=/bin/loadkeys \
--with-kbd-setfont=/bin/setfont \
--enable-split-usr \
- --disable-static \
--disable-gudev \
--without-python</userinput></screen>
+ <variablelist>
+ <title>The meaning of the configure option:</title>
+
+ <varlistentry>
+ <term><parameter>--with-root*</parameter></term>
+ <listitem>
+ <para>These switches ensure that core programs and
+ shared libraries are installed in the subdirectories
+ of the root partition.</para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><parameter>--with-kbd-*</parameter></term>
+ <listitem>
+ <para>These switches tell Systemd where to find
+ Kbd programs.</para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><parameter>--enable-split-usr</parameter></term>
+ <listitem>
+ <para>This switch ensures that Systemd will work on
+ systems where /bin, /lib and /sbin directories are not
+ symlinks to their /usr counterparts.</para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><parameter>--disable-gudev --without-python</parameter></term>
+ <listitem>
+ <para>These switches disable optional features because
+ LFS does not provide their dependencies.</para>
+ </listitem>
+ </varlistentry>
+
+ </variablelist>
+
+
<para>Compile the package:</para>
<screen><userinput remap="make">make</userinput></screen>
- <para>To test the results, issue:</para>
-
-<screen><userinput remap="test">make check</userinput></screen>
+ <para>The package comes with a testsuite, but it doesn't work in
+ chroot. It needs to be run from a system booted using Systemd.</para>
<para>Install the package:</para>
<screen><userinput remap="install">make install</userinput></screen>
+ <para>Create the <filename>/etc/machine-id</filename> file needed by
+ Journald:</para>
+
+<screen><userinput
remap="install">systemd-machine-id-setup</userinput></screen>
+
+ <para>Create the Sysvinit compatibility symlinks, so Systemd is used
+ as the default init system:</para>
+
+<screen><userinput remap="install">for tool in runlevel reboot shutdown
poweroff halt telinit; do
+ ln -sfv ../bin/systemctl /sbin/$tool
+done
+ln -sfv ../lib/systemd/systemd /sbin/init</userinput></screen>
+
+ <para>By default, Journald logs to a tmpfs which means that logs
+ are not persistent through reboots. To make it log to a disk,
+ create the <filename class="directory">
+ /var/log/journal</filename> directory:</para>
+
+<screen><userinput remap="install">mkdir -pv
/var/log/journal</userinput></screen>
+
+ <para>Remove reference to a non-existent group:</para>
+
+<screen><userinput remap="install">sed -i "s@0775 root lock@0755 root root@g"
/usr/lib/tmpfiles.d/legacy.conf</userinput></screen>
+
</sect2>
- <sect2 id="contents-udev" role="content">
- <title>Contents of Udev</title>
+ <sect2 id="contents-systemd" role="content">
+ <title>Contents of Systemd</title>
<segmentedlist>
<segtitle>Installed programs</segtitle>
+ <segtitle>Installed libraries</segtitle>
+ <segtitle>Installed directories</segtitle>
<seglistitem>
- <seg>hostnamectl, journalctl, localectl, loginctl, systemctl,
- systemd-analyze, systemd-ask-password, systemd-cat,
- systemd-cgls, systemd-cgtop, systemd-coredumpctl,
- systemctl-delta, systemd-detect-virt, systemd-inhibit,
- systemd-machine-id-setup, systemd-notify, systemd-nspawn,
- systemd-stdio-bridge, systemd-tmpfiles,
- systemd-tty-ask-password-agent, timedatectl, udevadm</seg>
-
+ <seg>halt, hostnamectl, init, journalctl, localectl, loginctl,
+ poweroff, reboot, runlevel, shutdown, systemctl, systemd-analyze,
+ systemd-ask-password, systemd-cat, systemd-cgls, systemd-cgtop,
+ systemd-coredumpctl, systemd-delta, systemd-detect-virt,
+ systemd-inhibit, systemd-machine-id-setup, systemd-notify,
+ systemd-nspawn, systemd-stdio-bridge, systemd-tmpfiles,
+ systemd-tty-ask-password-agent, telinit, timedatectl and
+ udevadm</seg>
+ <seg>libnss_myhostname.so.2, libsystemd-daemon.so, libsystemd-id128.so,
+ libsystemd-journal.so, libsystemd-login.so and libudev.so</seg>
+ <seg>/etc/binfmt.d, /etc/init.d, /etc/modules-load.d, /etc/rpm,
+ /etc/sysctl.d, /etc/systemd, /etc/tmpfiles.d, /etc/udev,
+ /etc/xdg/systemd, /lib/systemd, /lib/udev, /usr/include/systemd,
+ /usr/lib/binfmt.d, /usr/lib/modules-load.d, /usr/lib/sysctl.d,
+ /usr/lib/systemd, /usr/lib/tmpfiles.d,
/usr/share/doc/systemd-&systemd-version;,
+ /usr/share/systemd, /var/lib/systemd and /var/log/journald</seg>
</seglistitem>
</segmentedlist>
@@ -92,20 +165,47 @@
<?dbfo list-presentation="list"?>
<?dbhtml list-presentation="table"?>
+ <varlistentry id="halt">
+ <term><command>halt</command></term>
+ <listitem>
+ <para>Normally invokes <command>shutdown</command> with the
+ <parameter>-h</parameter> option, except when already in run-level 0,
+ then it tells the kernel to halt the system; it notes in the
+ file <filename>/var/log/wtmp</filename> that the system is being
+ brought down.</para>
+ <indexterm zone="ch-system-systemd halt">
+ <primary sortas="b-halt">halt</primary>
+ </indexterm>
+ </listitem>
+ </varlistentry>
+
<varlistentry id="hostnamectl">
<term><command>hostnamectl</command></term>
<listitem>
- <para>To be completed</para>
+ <para>used to query and change the system hostname and related
+ settings.</para>
<indexterm zone="ch-system-systemd hostnamectl">
<primary sortas="b-hostnamectl">hostnamectl</primary>
</indexterm>
</listitem>
</varlistentry>
+ <varlistentry id="init">
+ <term><command>init</command></term>
+ <listitem>
+ <para>The first process to be started when the kernel has initialized
+ the hardware which takes over the boot process and starts all the
+ proceses it is instructed to.</para>
+ <indexterm zone="ch-system-systemd init">
+ <primary sortas="b-init">init</primary>
+ </indexterm>
+ </listitem>
+ </varlistentry>
+
<varlistentry id="journalctl">
<term><command>journalctl</command></term>
<listitem>
- <para>To be completed</para>
+ <para>used to query the contents of the Systemd Journal.</para>
<indexterm zone="ch-system-systemd journalctl">
<primary sortas="b-journalctl">journalctl</primary>
</indexterm>
@@ -115,7 +215,8 @@
<varlistentry id="localectl">
<term><command>localectl</command></term>
<listitem>
- <para>To be completed</para>
+ <para>used to query and change the system locale and keyboard layout
+ settings.</para>
<indexterm zone="ch-system-systemd localectl">
<primary sortas="b-localectl">localectl</primary>
</indexterm>
@@ -125,17 +226,63 @@
<varlistentry id="loginctl">
<term><command>loginctl</command></term>
<listitem>
- <para>To be completed</para>
+ <para>used to introspect and control the state of the Systemd Login
+ Manager.</para>
<indexterm zone="ch-system-systemd loginctl">
<primary sortas="b-loginctl">loginctl</primary>
</indexterm>
</listitem>
</varlistentry>
+ <varlistentry id="poweroff">
+ <term><command>poweroff</command></term>
+ <listitem>
+ <para>Tells the kernel to halt the system and switch off the computer
+ (see <command>halt</command>).</para>
+ <indexterm zone="ch-system-systemd poweroff">
+ <primary sortas="b-poweroff">poweroff</primary>
+ </indexterm>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry id="reboot">
+ <term><command>reboot</command></term>
+ <listitem>
+ <para>Tells the kernel to reboot the system (see
+ <command>halt</command>).</para>
+ <indexterm zone="ch-system-systemd reboot">
+ <primary sortas="b-reboot">reboot</primary>
+ </indexterm>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry id="runlevel">
+ <term><command>runlevel</command></term>
+ <listitem>
+ <para>Reports the previous and the current run-level, as noted in the
+ last run-level record in <filename>/var/run/utmp</filename>.</para>
+ <indexterm zone="ch-system-systemd runlevel">
+ <primary sortas="b-runlevel">runlevel</primary>
+ </indexterm>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry id="shutdown">
+ <term><command>shutdown</command></term>
+ <listitem>
+ <para>Brings the system down in a secure way, signaling all processes
+ and notifying all logged-in users.</para>
+ <indexterm zone="ch-system-systemd shutdown">
+ <primary sortas="b-shutdown">shutdown</primary>
+ </indexterm>
+ </listitem>
+ </varlistentry>
+
<varlistentry id="systemctl">
<term><command>systemctl</command></term>
<listitem>
- <para>To be completed</para>
+ <para>used to introspect and control the state of the Systemd system
and
+ service manager.</para>
<indexterm zone="ch-system-systemd systemctl">
<primary sortas="b-systemctl">systemctl</primary>
</indexterm>
@@ -145,7 +292,8 @@
<varlistentry id="systemd-analyze">
<term><command>systemd-analyze</command></term>
<listitem>
- <para>To be completed</para>
+ <para>used to determine system boot-up performance of the current
boot.
+ </para>
<indexterm zone="ch-system-systemd systemd-analyze">
<primary sortas="b-systemd-analyze">systemd-analyze</primary>
</indexterm>
@@ -155,7 +303,8 @@
<varlistentry id="systemd-ask-password">
<term><command>systemd-ask-password</command></term>
<listitem>
- <para>To be completed</para>
+ <para>used to query a system password or passphrase from the user,
using a
+ question message specified on the command line.</para>
<indexterm zone="ch-system-systemd systemd-ask-password">
<primary
sortas="b-systemd-ask-password">systemd-ask-password</primary>
</indexterm>
@@ -165,7 +314,8 @@
<varlistentry id="systemd-cat">
<term><command>systemd-cat</command></term>
<listitem>
- <para>To be completed</para>
+ <para>used to connect STDOUT and STDERR of a process with the
Journal.
+ </para>
<indexterm zone="ch-system-systemd systemd-cat">
<primary sortas="b-systemd-cat">systemd-cat</primary>
</indexterm>
@@ -175,7 +325,8 @@
<varlistentry id="systemd-cgls">
<term><command>systemd-cgls</command></term>
<listitem>
- <para>To be completed</para>
+ <para>recursively shows the contents of the selected Linux control
group
+ hierarchy in a tree.</para>
<indexterm zone="ch-system-systemd systemd-cgls">
<primary sortas="b-systemd-cgls">systemd-cgls</primary>
</indexterm>
@@ -185,7 +336,8 @@
<varlistentry id="systemd-cgtop">
<term><command>systemd-cgtop</command></term>
<listitem>
- <para>To be completed</para>
+ <para>shows the top control groups of the local Linux control group
hierarchy,
+ ordered by their CPU, memory and disk I/O load.</para>
<indexterm zone="ch-system-systemd systemd-cgtop">
<primary sortas="b-systemd-cgtop">systemd-cgtop</primary>
</indexterm>
@@ -195,7 +347,7 @@
<varlistentry id="systemd-coredumpctl">
<term><command>systemd-coredumpctl</command></term>
<listitem>
- <para>To be completed</para>
+ <para>used to retrieve coredumps from the Systemd Journal</para>
<indexterm zone="ch-system-systemd systemd-coredumpctl">
<primary
sortas="b-systemd-coredumpctl">systemd-coredumpctl</primary>
</indexterm>
@@ -205,7 +357,9 @@
<varlistentry id="systemd-delta">
<term><command>systemd-delta</command></term>
<listitem>
- <para>To be completed</para>
+ <para>used to identify and compare configuration files in
+ <filename class="directory">/etc</filename> that override default
+ counterparts in <filename class="directory">/usr</filename>.</para>
<indexterm zone="ch-system-systemd systemd-delta">
<primary sortas="b-systemd-delta">systemd-delta</primary>
</indexterm>
@@ -215,7 +369,7 @@
<varlistentry id="systemd-detect-virt">
<term><command>systemd-detect-virt</command></term>
<listitem>
- <para>To be completed</para>
+ <para>detects execution in a virtualized environment.</para>
<indexterm zone="ch-system-systemd systemd-detect-virt">
<primary
sortas="b-systemd-detect-virt">systemd-detect-virt</primary>
</indexterm>
@@ -225,7 +379,8 @@
<varlistentry id="systemd-inhibit">
<term><command>systemd-inhibit</command></term>
<listitem>
- <para>To be completed</para>
+ <para>used to execute a program with a shutdown, sleep or idle
inhibitor lock
+ taken.</para>
<indexterm zone="ch-system-systemd systemd-inhibit">
<primary sortas="b-systemd-inhibit">systemd-inhibit</primary>
</indexterm>
@@ -235,7 +390,9 @@
<varlistentry id="systemd-machine-id-setup">
<term><command>systemd-machine-id-setup</command></term>
<listitem>
- <para>To be completed</para>
+ <para>used by system installer tools to initialize the machine ID
stored in
+ <filename>/etc/machine-id</filename> at install time with a randomly
+ generated ID.</para>
<indexterm zone="ch-system-systemd systemd-machine-id-setup">
<primary
sortas="b-systemd-machine-id-setup">systemd-machine-id-setup</primary>
</indexterm>
@@ -245,7 +402,8 @@
<varlistentry id="systemd-notify">
<term><command>systemd-notify</command></term>
<listitem>
- <para>To be completed</para>
+ <para>used by daemon scripts to notify the init system about status
changes.
+ </para>
<indexterm zone="ch-system-systemd systemd-notify">
<primary sortas="b-systemd-notify">systemd-notify</primary>
</indexterm>
@@ -255,14 +413,14 @@
<varlistentry id="systemd-nspawn">
<term><command>systemd-nspawn</command></term>
<listitem>
- <para>To be completed</para>
+ <para>used to run a command or OS in a light-weight namespace
container.</para>
<indexterm zone="ch-system-systemd systemd-nspawn">
<primary sortas="b-systemd-nspawn">systemd-nspawn</primary>
</indexterm>
</listitem>
</varlistentry>
- <varlistentry id="systemd-stdio-bridge">
+<!-- <varlistentry id="systemd-stdio-bridge">
<term><command>systemd-stdio-bridge</command></term>
<listitem>
<para>To be completed</para>
@@ -270,12 +428,14 @@
<primary
sortas="b-systemd-stdio-bridge">systemd-stdio-bridge</primary>
</indexterm>
</listitem>
- </varlistentry>
+ </varlistentry> -->
<varlistentry id="systemd-tmpfiles">
<term><command>systemd-tmpfiles</command></term>
<listitem>
- <para>To be completed</para>
+ <para>creates, deletes and cleans up volatile and temporary files
and directories,
+ based on the configuration file format and location specified in
+ <filename class="directory">tmpfiles.d</filename> directories.</para>
<indexterm zone="ch-system-systemd systemd-tmpfiles">
<primary sortas="b-systemd-tmpfiles">systemd-tmpfiles</primary>
</indexterm>
@@ -285,17 +445,28 @@
<varlistentry id="systemd-tty-ask-password-agent">
<term><command>systemd-tty-ask-password-agent</command></term>
<listitem>
- <para>To be completed</para>
+ <para>used to list or process pending Systemd password
requests</para>
<indexterm zone="ch-system-systemd systemd-tty-ask-password-agent">
<primary
sortas="b-systemd-tty-ask-password-agent">systemd-tty-ask-password-agent</primary>
</indexterm>
</listitem>
</varlistentry>
+ <varlistentry id="telinit">
+ <term><command>telinit</command></term>
+ <listitem>
+ <para>Tells <command>init</command> which run-level to change
to.</para>
+ <indexterm zone="ch-system-systemd telinit">
+ <primary sortas="b-telinit">telinit</primary>
+ </indexterm>
+ </listitem>
+ </varlistentry>
+
<varlistentry id="timedatectl">
<term><command>timedatectl</command></term>
<listitem>
- <para>To be completed</para>
+ <para>used to query and change the system clock and its settings.
+ </para>
<indexterm zone="ch-system-systemd timedatectl">
<primary sortas="b-timedatectl">timedatectl</primary>
</indexterm>
@@ -305,12 +476,65 @@
<varlistentry id="udevadm">
<term><command>udevadm</command></term>
<listitem>
- <para>To be completed</para>
+ <para>Generic Udev administration tool: controls the udevd daemon,
+ provides info from the Udev database, monitors uevents, waits for
+ uevents to finish, tests Udev configuration, and triggers uevents
+ for a given device.</para>
<indexterm zone="ch-system-systemd udevadm">
<primary sortas="b-udevadm">udevadm</primary>
</indexterm>
</listitem>
</varlistentry>
+
+ <varlistentry id="libsystemd-daemon">
+ <term><filename class="libraryfile">libsystemd-daemon</filename></term>
+ <listitem>
+ <para>Systemd Daemon utility library.</para>
+ <indexterm zone="ch-system-systemd libsystemd-daemon">
+ <primary sortas="c-libsystemd-daemon">libsystemd-daemon</primary>
+ </indexterm>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry id="libsystemd-id128">
+ <term><filename class="libraryfile">libsystemd-id128</filename></term>
+ <listitem>
+ <para>Systemd 128 Bit ID utility library.</para>
+ <indexterm zone="ch-system-systemd libsystemd-id128">
+ <primary sortas="c-libsystemd-id128">libsystemd-id128</primary>
+ </indexterm>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry id="libsystemd-journal">
+ <term><filename
class="libraryfile">libsystemd-journal</filename></term>
+ <listitem>
+ <para>Systemd Journal utility library.</para>
+ <indexterm zone="ch-system-systemd libsystemd-journal">
+ <primary sortas="c-libsystemd-journal">libsystemd-journal</primary>
+ </indexterm>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry id="libsystemd-login">
+ <term><filename class="libraryfile">libsystemd-login</filename></term>
+ <listitem>
+ <para>Systemd Login utility library.</para>
+ <indexterm zone="ch-system-systemd libsystemd-login">
+ <primary sortas="c-libsystemd-login">libsystemd-login</primary>
+ </indexterm>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry id="libudev">
+ <term><filename class="libraryfile">libudev</filename></term>
+ <listitem>
+ <para>A library to access Udev device information.</para>
+ <indexterm zone="ch-system-systemd libudev">
+ <primary sortas="c-libudev">libudev</primary>
+ </indexterm>
+ </listitem>
+ </varlistentry>
</variablelist>
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