source: chapter08/systemd.xml@ bec5f87

12.0 12.0-rc1 12.1 12.1-rc1 multilib trunk xry111/arm64 xry111/arm64-12.0 xry111/clfs-ng xry111/loongarch xry111/loongarch-12.0 xry111/loongarch-12.1 xry111/mips64el xry111/update-glibc
Last change on this file since bec5f87 was 57f1678, checked in by Xi Ruoyao <xry111@…>, 11 months ago

systemd: Add --no-same-owner for man page extraction

Well, I forgot to create the man pages tarball as root, so if we don't
use --no-same-owner the man pages will be owned by UID 1000 :(.

Instead of regenerating the tarball again let's just fix this in the
book.

  • Property mode set to 100644
File size: 31.9 KB
Line 
1<?xml version="1.0" encoding="ISO-8859-1"?>
2<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
3 "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
4 <!ENTITY % general-entities SYSTEM "../general.ent">
5 %general-entities;
6]>
7
8<sect1 id="ch-system-systemd" role="wrap" revision="systemd">
9 <?dbhtml filename="systemd.html"?>
10
11 <sect1info condition="script">
12 <productname>systemd</productname>
13 <productnumber>&systemd-version;</productnumber>
14 <address>&systemd-url;</address>
15 </sect1info>
16
17 <title>Systemd-&systemd-version;</title>
18
19 <indexterm zone="ch-system-systemd">
20 <primary sortas="a-systemd">systemd</primary>
21 </indexterm>
22
23 <sect2 role="package">
24 <title/>
25
26 <para>The systemd package contains programs for controlling the startup,
27 running, and shutdown of the system.</para>
28
29 <segmentedlist>
30 <segtitle>&buildtime;</segtitle>
31 <segtitle>&diskspace;</segtitle>
32
33 <seglistitem>
34 <seg>&systemd-fin-sbu;</seg>
35 <seg>&systemd-fin-du;</seg>
36 </seglistitem>
37 </segmentedlist>
38 </sect2>
39
40 <sect2 role="installation">
41 <title>Installation of systemd</title>
42
43 <para>Remove two unneeded groups,
44 <systemitem class="groupname">render</systemitem> and
45 <systemitem class="groupname">sgx</systemitem>, from the default udev
46 rules:</para>
47
48 <screen><userinput remap="pre">sed -i -e 's/GROUP="render"/GROUP="video"/' \
49 -e 's/GROUP="sgx", //' rules.d/50-udev-default.rules.in</userinput></screen>
50
51 <para>Prepare systemd for compilation:</para>
52
53<screen><userinput remap="configure">mkdir -p build
54cd build
55
56meson setup \
57 --prefix=/usr \
58 --buildtype=release \
59 -Ddefault-dnssec=no \
60 -Dfirstboot=false \
61 -Dinstall-tests=false \
62 -Dldconfig=false \
63 -Dsysusers=false \
64 -Drpmmacrosdir=no \
65 -Dhomed=false \
66 -Duserdb=false \
67 -Dman=false \
68 -Dmode=release \
69 -Dpamconfdir=no \
70 -Ddev-kvm-mode=0660 \
71 -Ddocdir=/usr/share/doc/systemd-&systemd-version; \
72 ..</userinput></screen>
73
74 <variablelist>
75 <title>The meaning of the meson options:</title>
76
77 <varlistentry>
78 <term><parameter>--buildtype=release</parameter></term>
79 <listitem>
80 <para>This switch overrides the default buildtype
81 (<quote>debug</quote>), which produces unoptimized
82 binaries.</para>
83 </listitem>
84 </varlistentry>
85
86 <varlistentry>
87 <term><parameter>-Ddefault-dnssec=no</parameter></term>
88 <listitem>
89 <para>This switch turns off the experimental DNSSEC support.</para>
90 </listitem>
91 </varlistentry>
92
93 <varlistentry>
94 <term><parameter>-Dfirstboot=false</parameter></term>
95 <listitem>
96 <para>This switch prevents installation of systemd
97 services responsible for setting up the system for
98 the first time. These are not useful in LFS, because
99 everything is done manually.</para>
100 </listitem>
101 </varlistentry>
102
103 <varlistentry>
104 <term><parameter>-Dinstall-tests=false</parameter></term>
105 <listitem>
106 <para>This switch prevents installation of the compiled tests.</para>
107 </listitem>
108 </varlistentry>
109
110 <varlistentry>
111 <term><parameter>-Dldconfig=false</parameter></term>
112 <listitem>
113 <para>This switch prevents installation of a systemd unit that runs
114 <command>ldconfig</command> at boot; this is not useful for source
115 distributions such as LFS, and makes the boot time longer. Remove
116 this option to enable running <command>ldconfig</command> at boot.</para>
117 </listitem>
118 </varlistentry>
119
120 <varlistentry>
121 <term><parameter>-Dsysusers=false</parameter></term>
122 <listitem>
123 <para>This switch prevents installation of systemd
124 services responsible for setting up the
125 <filename>/etc/group</filename> and
126 <filename>/etc/passwd</filename> files. Both files
127 were created in the previous chapter. This daemon is not useful
128 on an LFS system since user accounts are manually created.</para>
129 </listitem>
130 </varlistentry>
131
132 <varlistentry>
133 <term><parameter>-Drpmmacrosdir=no</parameter></term>
134 <listitem>
135 <para>This switch disables installation of RPM Macros
136 for use with systemd, because LFS does not support RPM.</para>
137 </listitem>
138 </varlistentry>
139
140 <varlistentry>
141 <term><parameter>-D{userdb,homed}=false</parameter></term>
142 <listitem>
143 <para>Remove two daemons with dependencies that do not fit
144 within the scope of LFS.</para>
145 </listitem>
146 </varlistentry>
147
148 <varlistentry>
149 <term><parameter>-Dman=false</parameter></term>
150 <listitem>
151 <para>Prevent the generation of man pages to avoid extra
152 dependencies. We will install pre-generated man pages for systemd
153 from a tarball.</para>
154 </listitem>
155 </varlistentry>
156
157 <varlistentry>
158 <term><parameter>-Dmode=release</parameter></term>
159 <listitem>
160 <para>Disable some features considered experimental by upstream.
161 </para>
162 </listitem>
163 </varlistentry>
164
165 <varlistentry>
166 <term><parameter>-Dpamconfdir=no</parameter></term>
167 <listitem>
168 <para>Prevent the installation of a PAM configuration file not
169 functional on LFS.</para>
170 </listitem>
171 </varlistentry>
172
173 <varlistentry>
174 <term><parameter>-Ddev-kvm-mode=0660</parameter></term>
175 <listitem>
176 <para>The default udev rule would allow all users to access
177 <filename class='devicefile'>/dev/kvm</filename>. The editors
178 consider it dangerous. This option overrides it.</para>
179 </listitem>
180 </varlistentry>
181 </variablelist>
182
183 <para>Compile the package:</para>
184
185<screen><userinput remap="make">ninja</userinput></screen>
186
187 <para>Install the package:</para>
188
189<screen><userinput remap="install">ninja install</userinput></screen>
190
191 <para>Install the man pages:</para>
192
193 <!-- Please make sure systemd man pages tarball has a common leading
194 component in the path. -->
195<screen><userinput remap="install">tar -xf ../../systemd-man-pages-&systemd-version;.tar.xz \
196 --no-same-owner --strip-components=1 \
197 -C /usr/share/man</userinput></screen>
198
199 <para>Create the <filename>/etc/machine-id</filename> file needed by
200 <command>systemd-journald</command>:</para>
201
202<screen><userinput remap="adjust">systemd-machine-id-setup</userinput></screen>
203
204 <para>Set up the basic target structure:</para>
205
206<screen><userinput remap="adjust">systemctl preset-all</userinput></screen>
207
208 <para>Disable two services for upgrading binary distros. They are useless for
209 a basic Linux system built from source, and each one will report an error if
210 it's enabled but not configured:</para>
211
212<screen><userinput remap="adjust">systemctl disable systemd-sysupdate{,-reboot}</userinput></screen>
213
214<!-- dev: 50-pid-max.conf is not removed in BLFS, so I commented the following out.
215 If it causes any trouble, we can add this back and also copy it into BLFS -->
216<!--
217 <para>Prevent systemd from resetting the maximum PID value which causes
218 some problems with packages and units in BLFS:</para>
219
220<screen><userinput remap="adjust">rm -f /usr/lib/sysctl.d/50-pid-max.conf</userinput></screen>
221-->
222
223 </sect2>
224
225 <sect2 id="contents-systemd" role="content">
226 <title>Contents of systemd</title>
227
228 <segmentedlist>
229 <segtitle>Installed programs</segtitle>
230 <segtitle>Installed libraries</segtitle>
231 <segtitle>Installed directories</segtitle>
232
233 <seglistitem>
234 <seg>busctl, coredumpctl, halt (symlink to systemctl),
235 hostnamectl, init, journalctl, kernel-install, localectl, loginctl,
236 machinectl, networkctl, oomctl, portablectl, poweroff (symlink to
237 systemctl), reboot (symlink to systemctl), resolvconf (symlink to
238 resolvectl), resolvectl, runlevel (symlink to systemctl), shutdown
239 (symlink to systemctl), systemctl, systemd-ac-power, systemd-analyze,
240 systemd-ask-password, systemd-cat, systemd-cgls, systemd-cgtop,
241 systemd-creds, systemd-delta, systemd-detect-virt,
242 systemd-dissect, systemd-escape, systemd-hwdb, systemd-id128,
243 systemd-inhibit, systemd-machine-id-setup,
244 systemd-mount, systemd-notify, systemd-nspawn, systemd-path,
245 systemd-repart, systemd-resolve (symlink to resolvectl), systemd-run,
246 systemd-socket-activate, systemd-stdio-bridge, systemd-sysext,
247 systemd-tmpfiles, systemd-tty-ask-password-agent,
248 systemd-umount (symlink to systemd-mount),
249 telinit (symlink to systemctl), timedatectl, and udevadm</seg>
250 <seg>libnss_myhostname.so.2, libnss_mymachines.so.2,
251 libnss_resolve.so.2, libnss_systemd.so.2,
252 libsystemd.so, libsystemd-shared-&systemd-version;.so (in /usr/lib/systemd),
253 and libudev.so</seg>
254 <seg>/etc/binfmt.d, /etc/init.d, /etc/kernel, /etc/modules-load.d,
255 /etc/sysctl.d, /etc/systemd, /etc/tmpfiles.d, /etc/udev,
256 /etc/xdg/systemd, /usr/lib/systemd, /usr/lib/udev, /usr/include/systemd,
257 /usr/lib/binfmt.d, /usr/lib/environment.d, /usr/lib/kernel,
258 /usr/lib/modules-load.d, /usr/lib/sysctl.d, /usr/lib/systemd,
259 /usr/lib/tmpfiles.d,
260 /usr/share/doc/systemd-&systemd-version;, /usr/share/factory,
261 /usr/share/systemd, /var/lib/systemd, and /var/log/journal</seg>
262 </seglistitem>
263 </segmentedlist>
264
265 <variablelist>
266 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
267 <?dbfo list-presentation="list"?>
268 <?dbhtml list-presentation="table"?>
269
270 <varlistentry id="busctl">
271 <term><command>busctl</command></term>
272 <listitem>
273 <para>Is used to introspect and monitor the D-Bus bus</para>
274 <indexterm zone="ch-system-systemd busctl">
275 <primary sortas="b-busctl">busctl</primary>
276 </indexterm>
277 </listitem>
278 </varlistentry>
279
280 <varlistentry id="coredumpctl">
281 <term><command>coredumpctl</command></term>
282 <listitem>
283 <para>Is used to retrieve coredumps from the systemd journal</para>
284 <indexterm zone="ch-system-systemd coredumpctl">
285 <primary sortas="b-coredumpctl">coredumpctl</primary>
286 </indexterm>
287 </listitem>
288 </varlistentry>
289
290 <varlistentry id="halt">
291 <term><command>halt</command></term>
292 <listitem>
293 <para>Normally invokes <command>shutdown</command> with the
294 <parameter>-h</parameter> option, except when already in run-level 0,
295 when it tells the kernel to halt the system; it notes in the
296 file <filename>/var/log/wtmp</filename> that the system is being
297 brought down</para>
298 <indexterm zone="ch-system-systemd halt">
299 <primary sortas="b-halt">halt</primary>
300 </indexterm>
301 </listitem>
302 </varlistentry>
303
304 <varlistentry id="hostnamectl">
305 <term><command>hostnamectl</command></term>
306 <listitem>
307 <para>Is used to query and change the system hostname and related
308 settings</para>
309 <indexterm zone="ch-system-systemd hostnamectl">
310 <primary sortas="b-hostnamectl">hostnamectl</primary>
311 </indexterm>
312 </listitem>
313 </varlistentry>
314
315 <varlistentry id="init">
316 <term><command>init</command></term>
317 <listitem>
318 <para>Is the first process to be started after the kernel has initialized
319 the hardware; <command>init</command> takes over the boot process and starts the
320 processes specified by its configuration files; in this case, it starts
321 systemd</para>
322 <indexterm zone="ch-system-systemd init">
323 <primary sortas="b-init">init</primary>
324 </indexterm>
325 </listitem>
326 </varlistentry>
327
328 <varlistentry id="journalctl">
329 <term><command>journalctl</command></term>
330 <listitem>
331 <para>Is used to query the contents of the systemd journal</para>
332 <indexterm zone="ch-system-systemd journalctl">
333 <primary sortas="b-journalctl">journalctl</primary>
334 </indexterm>
335 </listitem>
336 </varlistentry>
337
338 <varlistentry id="kernel-install">
339 <term><command>kernel-install</command></term>
340 <listitem>
341 <para>Is used to add and remove kernel and initramfs images to and
342 from /boot; in LFS, this is done manually</para>
343 <indexterm zone="ch-system-systemd kernel-install">
344 <primary sortas="b-kernel-install">kernel-install</primary>
345 </indexterm>
346 </listitem>
347 </varlistentry>
348
349 <varlistentry id="localectl">
350 <term><command>localectl</command></term>
351 <listitem>
352 <para>Is used to query and change the system locale and keyboard layout
353 settings</para>
354 <indexterm zone="ch-system-systemd localectl">
355 <primary sortas="b-localectl">localectl</primary>
356 </indexterm>
357 </listitem>
358 </varlistentry>
359
360 <varlistentry id="loginctl">
361 <term><command>loginctl</command></term>
362 <listitem>
363 <para>Is used to introspect and control the state of the systemd Login
364 Manager</para>
365 <indexterm zone="ch-system-systemd loginctl">
366 <primary sortas="b-loginctl">loginctl</primary>
367 </indexterm>
368 </listitem>
369 </varlistentry>
370
371 <varlistentry id="machinectl">
372 <term><command>machinectl</command></term>
373 <listitem>
374 <para>Is used to introspect and control the state of the systemd Virtual
375 Machine and Container Registration Manager</para>
376 <indexterm zone="ch-system-systemd machinectl">
377 <primary sortas="b-machinectl">machinectl</primary>
378 </indexterm>
379 </listitem>
380 </varlistentry>
381
382 <varlistentry id="networkctl">
383 <term><command>networkctl</command></term>
384 <listitem>
385 <para>Is used to introspect and configure the state of the network
386 links configured by systemd-networkd</para>
387 <indexterm zone="ch-system-systemd networkctl">
388 <primary sortas="b-networkctl">networkctl</primary>
389 </indexterm>
390 </listitem>
391 </varlistentry>
392
393 <varlistentry id="oomctl">
394 <term><command>oomctl</command></term>
395 <listitem>
396 <para>Controls the systemd Out Of Memory daemon</para>
397 <indexterm zone="ch-system-systemd oomctl">
398 <primary sortas="b-oomctl">oomctl</primary>
399 </indexterm>
400 </listitem>
401 </varlistentry>
402
403 <varlistentry id="portablectl">
404 <term><command>portablectl</command></term>
405 <listitem>
406 <para>Is used to attach or detach portable services from the local
407 system</para>
408 <indexterm zone="ch-system-systemd portablectl">
409 <primary sortas="b-portablectl">portablectl</primary>
410 </indexterm>
411 </listitem>
412 </varlistentry>
413
414 <varlistentry id="poweroff">
415 <term><command>poweroff</command></term>
416 <listitem>
417 <para>Instructs the kernel to halt the system and switch off the computer
418 (see <command>halt</command>)</para>
419 <indexterm zone="ch-system-systemd poweroff">
420 <primary sortas="b-poweroff">poweroff</primary>
421 </indexterm>
422 </listitem>
423 </varlistentry>
424
425 <varlistentry id="reboot">
426 <term><command>reboot</command></term>
427 <listitem>
428 <para>Instructs the kernel to reboot the system (see
429 <command>halt</command>)</para>
430 <indexterm zone="ch-system-systemd reboot">
431 <primary sortas="b-reboot">reboot</primary>
432 </indexterm>
433 </listitem>
434 </varlistentry>
435
436 <varlistentry id="resolvconf">
437 <term><command>resolvconf</command></term>
438 <listitem>
439 <para>Registers DNS server and domain configuration with
440 <command>systemd-resolved</command></para>
441 <indexterm zone="ch-system-systemd resolvconf">
442 <primary sortas="b-resolvconf">resolvconf</primary>
443 </indexterm>
444 </listitem>
445 </varlistentry>
446
447 <varlistentry id="resolvectl">
448 <term><command>resolvectl</command></term>
449 <listitem>
450 <para>Sends control commands to the network name resolution
451 manager, or resolves domain names, IPv4 and IPv6 addresses,
452 DNS records, and services</para>
453 <indexterm zone="ch-system-systemd resolvectl">
454 <primary sortas="b-resolvectl">resolvectl</primary>
455 </indexterm>
456 </listitem>
457 </varlistentry>
458
459 <varlistentry id="runlevel">
460 <term><command>runlevel</command></term>
461 <listitem>
462 <para>Outputs the previous and the current run-level, as noted in the
463 last run-level record in <filename>/run/utmp</filename></para>
464 <indexterm zone="ch-system-systemd runlevel">
465 <primary sortas="b-runlevel">runlevel</primary>
466 </indexterm>
467 </listitem>
468 </varlistentry>
469
470 <varlistentry id="shutdown">
471 <term><command>shutdown</command></term>
472 <listitem>
473 <para>Brings the system down in a safe and secure manner, signaling
474 all processes and notifying all logged-in users</para>
475 <indexterm zone="ch-system-systemd shutdown">
476 <primary sortas="b-shutdown">shutdown</primary>
477 </indexterm>
478 </listitem>
479 </varlistentry>
480
481 <varlistentry id="systemctl">
482 <term><command>systemctl</command></term>
483 <listitem>
484 <para>Is used to introspect and control the state of the systemd system
485 and service manager</para>
486 <indexterm zone="ch-system-systemd systemctl">
487 <primary sortas="b-systemctl">systemctl</primary>
488 </indexterm>
489 </listitem>
490 </varlistentry>
491
492 <varlistentry id="systemd-ac-power">
493 <term><command>systemd-ac-power</command></term>
494 <listitem>
495 <para>Reports whether the system is connected to an external
496 power source.</para>
497 <indexterm zone="ch-system-systemd systemd-ac-power">
498 <primary sortas="b-systemd-ac-power">systemd-ac-power</primary>
499 </indexterm>
500 </listitem>
501 </varlistentry>
502
503 <varlistentry id="systemd-analyze">
504 <term><command>systemd-analyze</command></term>
505 <listitem>
506 <para>Is used to analyze system startup performance,
507 as well as identify troublesome systemd units</para>
508 <indexterm zone="ch-system-systemd systemd-analyze">
509 <primary sortas="b-systemd-analyze">systemd-analyze</primary>
510 </indexterm>
511 </listitem>
512 </varlistentry>
513
514 <varlistentry id="systemd-ask-password">
515 <term><command>systemd-ask-password</command></term>
516 <listitem>
517 <para>Is used to query a system password or passphrase from the user,
518 using a message specified on the Linux command line</para>
519 <indexterm zone="ch-system-systemd systemd-ask-password">
520 <primary sortas="b-systemd-ask-password">systemd-ask-password</primary>
521 </indexterm>
522 </listitem>
523 </varlistentry>
524
525 <varlistentry id="systemd-cat">
526 <term><command>systemd-cat</command></term>
527 <listitem>
528 <para>Is used to connect the STDOUT and STDERR outputs of a process
529 with the systemd journal
530 </para>
531 <indexterm zone="ch-system-systemd systemd-cat">
532 <primary sortas="b-systemd-cat">systemd-cat</primary>
533 </indexterm>
534 </listitem>
535 </varlistentry>
536
537 <varlistentry id="systemd-cgls">
538 <term><command>systemd-cgls</command></term>
539 <listitem>
540 <para>Recursively shows the contents of the selected Linux control
541 group hierarchy in a tree</para>
542 <indexterm zone="ch-system-systemd systemd-cgls">
543 <primary sortas="b-systemd-cgls">systemd-cgls</primary>
544 </indexterm>
545 </listitem>
546 </varlistentry>
547
548 <varlistentry id="systemd-cgtop">
549 <term><command>systemd-cgtop</command></term>
550 <listitem>
551 <para>Shows the top control groups of the local Linux control group
552 hierarchy, ordered by their CPU, memory and disk I/O loads</para>
553 <indexterm zone="ch-system-systemd systemd-cgtop">
554 <primary sortas="b-systemd-cgtop">systemd-cgtop</primary>
555 </indexterm>
556 </listitem>
557 </varlistentry>
558
559 <varlistentry id="systemd-creds">
560 <term><command>systemd-creds</command></term>
561 <listitem>
562 <para>Displays and processes credentials</para>
563 <indexterm zone="ch-system-systemd systemd-creds">
564 <primary sortas="b-systemd-creds">systemd-creds</primary>
565 </indexterm>
566 </listitem>
567 </varlistentry>
568
569 <varlistentry id="systemd-delta">
570 <term><command>systemd-delta</command></term>
571 <listitem>
572 <para>Is used to identify and compare configuration files in
573 <filename class="directory">/etc</filename> that override the defaults
574 in <filename class="directory">/usr</filename></para>
575 <indexterm zone="ch-system-systemd systemd-delta">
576 <primary sortas="b-systemd-delta">systemd-delta</primary>
577 </indexterm>
578 </listitem>
579 </varlistentry>
580
581 <varlistentry id="systemd-detect-virt">
582 <term><command>systemd-detect-virt</command></term>
583 <listitem>
584 <para>Detects whether the system is being run in a virtual
585 environment, and adjusts udev accordingly</para>
586 <indexterm zone="ch-system-systemd systemd-detect-virt">
587 <primary sortas="b-systemd-detect-virt">systemd-detect-virt</primary>
588 </indexterm>
589 </listitem>
590 </varlistentry>
591
592 <varlistentry id="systemd-dissect">
593 <term><command>systemd-dissect</command></term>
594 <listitem>
595 <para>Is used to inspect OS disk images</para>
596 <indexterm zone="ch-system-systemd systemd-dissect">
597 <primary sortas="b-systemd-dissect">systemd-dissect</primary>
598 </indexterm>
599 </listitem>
600 </varlistentry>
601
602 <varlistentry id="systemd-escape">
603 <term><command>systemd-escape</command></term>
604 <listitem>
605 <para>Is used to escape strings for inclusion in systemd unit
606 names</para>
607 <indexterm zone="ch-system-systemd systemd-escape">
608 <primary sortas="b-systemd-escape">systemd-escape</primary>
609 </indexterm>
610 </listitem>
611 </varlistentry>
612
613 <varlistentry id="systemd-hwdb">
614 <term><command>systemd-hwdb</command></term>
615 <listitem>
616 <para>Is used to manage the hardware database (hwdb)</para>
617 <indexterm zone="ch-system-systemd systemd-hwdb">
618 <primary sortas="b-systemd-hwdb">systemd-hwdb</primary>
619 </indexterm>
620 </listitem>
621 </varlistentry>
622
623 <varlistentry id="systemd-id128">
624 <term><command>systemd-id128</command></term>
625 <listitem>
626 <para>Generates and prints id128 (UUID) strings</para>
627 <indexterm zone="ch-system-systemd systemd-id128">
628 <primary sortas="b-systemd-id128">systemd-id128</primary>
629 </indexterm>
630 </listitem>
631 </varlistentry>
632
633 <varlistentry id="systemd-inhibit">
634 <term><command>systemd-inhibit</command></term>
635 <listitem>
636 <para>Is used to execute a program with a shutdown, sleep or idle
637 inhibitor lock taken, preventing an action such as a system shutdown
638 until the process is completed</para>
639 <indexterm zone="ch-system-systemd systemd-inhibit">
640 <primary sortas="b-systemd-inhibit">systemd-inhibit</primary>
641 </indexterm>
642 </listitem>
643 </varlistentry>
644
645 <varlistentry id="systemd-machine-id-setup">
646 <term><command>systemd-machine-id-setup</command></term>
647 <listitem>
648 <para>Is used by system installer tools to initialize the machine ID
649 stored in <filename>/etc/machine-id</filename> at install time with a
650 randomly generated ID</para>
651 <indexterm zone="ch-system-systemd systemd-machine-id-setup">
652 <primary sortas="b-systemd-machine-id-setup">systemd-machine-id-setup</primary>
653 </indexterm>
654 </listitem>
655 </varlistentry>
656
657 <varlistentry id="systemd-mount">
658 <term><command>systemd-mount</command></term>
659 <listitem>
660 <para>Is used to temporarily mount or automount disks</para>
661 <indexterm zone="ch-system-systemd systemd-mount">
662 <primary sortas="b-systemd-mount">systemd-mount</primary>
663 </indexterm>
664 </listitem>
665 </varlistentry>
666
667 <varlistentry id="systemd-notify">
668 <term><command>systemd-notify</command></term>
669 <listitem>
670 <para>Is used by daemon scripts to notify the init system of status
671 changes</para>
672 <indexterm zone="ch-system-systemd systemd-notify">
673 <primary sortas="b-systemd-notify">systemd-notify</primary>
674 </indexterm>
675 </listitem>
676 </varlistentry>
677
678 <varlistentry id="systemd-nspawn">
679 <term><command>systemd-nspawn</command></term>
680 <listitem>
681 <para>Is used to run a command, or an entire OS, in a light-weight namespace
682 container</para>
683 <indexterm zone="ch-system-systemd systemd-nspawn">
684 <primary sortas="b-systemd-nspawn">systemd-nspawn</primary>
685 </indexterm>
686 </listitem>
687 </varlistentry>
688
689 <varlistentry id="systemd-path">
690 <term><command>systemd-path</command></term>
691 <listitem>
692 <para>Is used to query system and user paths</para>
693 <indexterm zone="ch-system-systemd systemd-path">
694 <primary sortas="b-systemd-path">systemd-path</primary>
695 </indexterm>
696 </listitem>
697 </varlistentry>
698
699 <varlistentry id="systemd-repart">
700 <term><command>systemd-repart</command></term>
701 <listitem>
702 <para>Is used to grow and add partitions to a partition table when
703 systemd is used with an OS image (e.g. a container)</para>
704 <indexterm zone="ch-system-systemd systemd-repart">
705 <primary sortas="b-systemd-repart">systemd-repart</primary>
706 </indexterm>
707 </listitem>
708 </varlistentry>
709
710 <varlistentry id="systemd-resolve">
711 <term><command>systemd-resolve</command></term>
712 <listitem>
713 <para>Is used to resolve domain names, IPV4 and IPv6 addresses, DNS
714 resource records, and services</para>
715 <indexterm zone="ch-system-systemd systemd-resolve">
716 <primary sortas="b-systemd-resolve">systemd-resolve</primary>
717 </indexterm>
718 </listitem>
719 </varlistentry>
720
721 <varlistentry id="systemd-run">
722 <term><command>systemd-run</command></term>
723 <listitem>
724 <para>Is used to create and start a transient .service or a .scope
725 unit and run the specified command in it; this is useful for
726 validating systemd units</para>
727 <indexterm zone="ch-system-systemd systemd-run">
728 <primary sortas="b-systemd-run">systemd-run</primary>
729 </indexterm>
730 </listitem>
731 </varlistentry>
732
733 <varlistentry id="systemd-socket-activate">
734 <term><command>systemd-socket-activate</command></term>
735 <listitem>
736 <para>Is used to listen on socket devices and launch a process upon
737 a successful connection to the socket</para>
738 <indexterm zone="ch-system-systemd systemd-socket-activate">
739 <primary sortas="b-systemd-socket-activate">systemd-socket-activate</primary>
740 </indexterm>
741 </listitem>
742 </varlistentry>
743
744 <varlistentry id="systemd-sysext">
745 <term><command>systemd-sysext</command></term>
746 <listitem>
747 <para>Activates system extension images</para>
748 <indexterm zone="ch-system-systemd systemd-sysext">
749 <primary sortas="b-systemd-sysext">systemd-sysext</primary>
750 </indexterm>
751 </listitem>
752 </varlistentry>
753
754 <varlistentry id="systemd-tmpfiles">
755 <term><command>systemd-tmpfiles</command></term>
756 <listitem>
757 <para>Creates, deletes, and cleans up volatile and temporary files and
758 directories, based on the configuration file format and location
759 specified in
760 <filename class="directory">tmpfiles.d</filename> directories</para>
761 <indexterm zone="ch-system-systemd systemd-tmpfiles">
762 <primary sortas="b-systemd-tmpfiles">systemd-tmpfiles</primary>
763 </indexterm>
764 </listitem>
765 </varlistentry>
766
767 <varlistentry id="systemd-umount">
768 <term><command>systemd-umount</command></term>
769 <listitem>
770 <para>Unmounts mount points</para>
771 <indexterm zone="ch-system-systemd systemd-umount">
772 <primary sortas="b-systemd-umount">systemd-umount</primary>
773 </indexterm>
774 </listitem>
775 </varlistentry>
776
777 <varlistentry id="systemd-tty-ask-password-agent">
778 <term><command>systemd-tty-ask-password-agent</command></term>
779 <listitem>
780 <para>Is used to list and/or process pending systemd password
781 requests</para>
782 <indexterm zone="ch-system-systemd systemd-tty-ask-password-agent">
783 <primary sortas="b-systemd-tty-ask-password-agent">systemd-tty-ask-password-agent</primary>
784 </indexterm>
785 </listitem>
786 </varlistentry>
787
788 <varlistentry id="telinit">
789 <term><command>telinit</command></term>
790 <listitem>
791 <para>Tells <command>init</command> which run-level to change
792 to</para>
793 <indexterm zone="ch-system-systemd telinit">
794 <primary sortas="b-telinit">telinit</primary>
795 </indexterm>
796 </listitem>
797 </varlistentry>
798
799 <varlistentry id="timedatectl">
800 <term><command>timedatectl</command></term>
801 <listitem>
802 <para>Is used to query and change the system clock and its settings
803 </para>
804 <indexterm zone="ch-system-systemd timedatectl">
805 <primary sortas="b-timedatectl">timedatectl</primary>
806 </indexterm>
807 </listitem>
808 </varlistentry>
809
810 <varlistentry id="udevadm">
811 <term><command>udevadm</command></term>
812 <listitem>
813 <para>Is a generic udev administration tool which controls the udevd
814 daemon, provides info from the udev hardware database, monitors
815 uevents, waits for uevents to finish, tests udev configuration, and
816 triggers uevents for a given device</para>
817 <indexterm zone="ch-system-systemd udevadm">
818 <primary sortas="b-udevadm">udevadm</primary>
819 </indexterm>
820 </listitem>
821 </varlistentry>
822
823 <varlistentry id="libsystemd">
824 <term><filename class="libraryfile">libsystemd</filename></term>
825 <listitem>
826 <para>Is the main systemd utility library</para>
827 <indexterm zone="ch-system-systemd libsystemd">
828 <primary sortas="c-libsystemd">libsystemd</primary>
829 </indexterm>
830 </listitem>
831 </varlistentry>
832
833 <varlistentry id="libudev">
834 <term><filename class="libraryfile">libudev</filename></term>
835 <listitem>
836 <para>Is a library to access Udev device information</para>
837 <indexterm zone="ch-system-systemd libudev">
838 <primary sortas="c-libudev">libudev</primary>
839 </indexterm>
840 </listitem>
841 </varlistentry>
842
843 </variablelist>
844
845 </sect2>
846
847</sect1>
Note: See TracBrowser for help on using the repository browser.