source: chapter06/systemd.xml@ 84dbccb2

10.0 10.0-rc1 10.1 10.1-rc1 11.0 11.0-rc1 11.0-rc2 11.0-rc3 11.1 11.1-rc1 11.2 11.2-rc1 11.3 11.3-rc1 12.0 12.0-rc1 12.1 12.1-rc1 9.0 9.1 arm bdubbs/gcc13 ml-11.0 multilib renodr/libudev-from-systemd s6-init trunk xry111/arm64 xry111/arm64-12.0 xry111/clfs-ng xry111/lfs-next xry111/loongarch xry111/loongarch-12.0 xry111/loongarch-12.1 xry111/mips64el xry111/pip3 xry111/rust-wip-20221008 xry111/update-glibc
Last change on this file since 84dbccb2 was 84dbccb2, checked in by Douglas R. Reno <renodr@…>, 5 years ago

Fix issue with systemd-machine-id-setup introduced by my earlier commit

git-svn-id: ​http://svn.linuxfromscratch.org/LFS/trunk/BOOK@11636 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689
  • Property mode set to 100644
File size: 29.4 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-ch6-sbu;</seg>
35 <seg>&systemd-ch6-du;</seg>
36 </seglistitem>
37 </segmentedlist>
38 </sect2>
39
40 <sect2 role="installation">
41 <title>Installation of systemd</title>
42
43 <para>Create a symlink to work around missing xsltproc:</para>
44
45<screen><userinput remap="pre">ln -sf /tools/bin/true /usr/bin/xsltproc</userinput></screen>
46
47 <para>Because we have not yet installed the final version of Util-Linux,
48 create links to the libraries in the approprite location:</para>
49
50<screen><userinput remap="pre">for file in /tools/lib/lib{blkid,mount,uuid}.so*; do
51 ln -sf $file /usr/lib/
52done</userinput></screen>
53
54 <para>Set up the man pages:</para>
55
56<screen><userinput remap="pre">tar -xf ../systemd-man-pages-&systemd-version;.tar.xz</userinput></screen>
57
58 <para>Remove tests that cannot be built in chroot:</para>
59
60<screen><userinput remap="pre">sed '177,$ d' -i src/resolve/meson.build</userinput></screen>
61
62 <para>Remove an unneeded group,
63 <systemitem class="groupname">render</systemitem>, from the default udev
64 rules:</para>
65
66<screen><userinput remap="pre">sed -i 's/GROUP="render", //' rules/50-udev-default.rules.in</userinput></screen>
67
68<!-- EDITORS NOTE: At the next systemd release, see if the CFLAGS can be removed. -->
69
70 <para>Prepare systemd for compilation:</para>
71
72<screen><userinput remap="configure">mkdir -p build
73cd build
74
75PKG_CONFIG_PATH="/usr/lib/pkgconfig:/tools/lib/pkgconfig" \
76LANG=en_US.UTF-8 \
77CFLAGS+="-Wno-format-overflow" \
78meson --prefix=/usr \
79 --sysconfdir=/etc \
80 --localstatedir=/var \
81 -Dblkid=true \
82 -Dbuildtype=release \
83 -Ddefault-dnssec=no \
84 -Dfirstboot=false \
85 -Dinstall-tests=false \
86 -Dkmod-path=/bin/kmod \
87 -Dldconfig=false \
88 -Dmount-path=/bin/mount \
89 -Drootprefix= \
90 -Drootlibdir=/lib \
91 -Dsplit-usr=true \
92 -Dsulogin-path=/sbin/sulogin \
93 -Dsysusers=false \
94 -Dumount-path=/bin/umount \
95 -Db_lto=false \
96 -Drpmmacrosdir=no \
97 ..</userinput></screen>
98
99 <variablelist>
100 <title>The meaning of the meson options:</title>
101
102 <varlistentry>
103 <term><parameter>-D*-path=*</parameter></term>
104 <listitem>
105 <para>These switches provide location of binaries needed by
106 systemd at runtime that have not yet been installed, or who's
107 pkgconfig files are currently only in
108 <filename>/tools/lib/pkgconfig</filename>.</para>
109 </listitem>
110 </varlistentry>
111
112 <varlistentry>
113 <term><parameter>-Ddefault-dnssec=no</parameter></term>
114 <listitem>
115 <para>This switch turns off the experimental DNSSEC support.</para>
116 </listitem>
117 </varlistentry>
118
119 <varlistentry>
120 <term><parameter>-Dfirstboot=false</parameter></term>
121 <listitem>
122 <para>This switch prevents installation of systemd
123 services responsible for setting up the system for
124 the first time. They are not useful for LFS because
125 everything is done manually.</para>
126 </listitem>
127 </varlistentry>
128
129 <varlistentry>
130 <term><parameter>-Dinstall-tests=false</parameter></term>
131 <listitem>
132 <para>This switch prevents installation of the compiled tests.</para>
133 </listitem>
134 </varlistentry>
135
136 <varlistentry>
137 <term><parameter>-Dldconfig=false</parameter></term>
138 <listitem>
139 <para>This switch prevents installation of a systemd unit that runs
140 <command>ldconfig</command> at boot, which is not useful for source
141 distributions such as LFS and makes the boot time longer. Remove it
142 if the described feature is desired.</para>
143 </listitem>
144 </varlistentry>
145
146 <varlistentry>
147 <term><parameter>-Droot*</parameter></term>
148 <listitem>
149 <para>These switches ensure that core programs and
150 shared libraries are installed in the subdirectories
151 of the root partition.</para>
152 </listitem>
153 </varlistentry>
154
155 <varlistentry>
156 <term><parameter>-Dsplit-usr=true</parameter></term>
157 <listitem>
158 <para>This switch ensures that systemd will work on
159 systems where /bin, /lib and /sbin directories are not
160 symlinks to their /usr counterparts.</para>
161 </listitem>
162 </varlistentry>
163
164 <varlistentry>
165 <term><parameter>-Dsysusers=false</parameter></term>
166 <listitem>
167 <para>This switch prevents installation of systemd
168 services responsible for setting up the
169 <filename>/etc/group</filename> and
170 <filename>/etc/passwd</filename> files. Both files
171 were created earlier in this chapter.</para>
172 </listitem>
173 </varlistentry>
174
175 <varlistentry>
176 <term><parameter>-Drpmmacrosdir=no</parameter></term>
177 <listitem>
178 <para>This switch disables installation of RPM Macros
179 for use with systemd because LFS does not support RPM.</para>
180 </listitem>
181 </varlistentry>
182 </variablelist>
183
184 <para>Compile the package:</para>
185
186<screen><userinput remap="make">LANG=en_US.UTF-8 ninja</userinput></screen>
187<!--
188 <para>To test the package, execute the following command:</para>
189
190<screen><userinput remap="test">LANG=en_US.UTF-8 ninja test</userinput></screen>
191-->
192 <para>Install the package:</para>
193
194<screen><userinput remap="install">LANG=en_US.UTF-8 ninja install</userinput></screen>
195
196 <para>Remove an unnecessary symbolic link:</para>
197
198<screen><userinput remap="install">rm -f /usr/bin/xsltproc</userinput></screen>
199
200 <para>Create the <filename>/etc/machine-id</filename> file needed by
201 <command>systemd-journald</command>:</para>
202
203<screen><userinput remap="adjust">systemd-machine-id-setup</userinput></screen>
204
205 <para>Remove symbolic links to Util-Linux libraries:</para>
206
207<screen><userinput remap="install">rm -fv /usr/lib/lib{blkid,uuid,mount}.so*</userinput></screen>
208
209 <para>Prevent systemd from creating <filename>/run/nologin</filename>
210 to allow unprivileged user logins without
211 <application>systemd-logind</application>:</para>
212
213<screen><userinput remap="adjust">rm -f /usr/lib/tmpfiles.d/systemd-nologin.conf</userinput></screen>
214
215 </sect2>
216
217 <sect2 id="contents-systemd" role="content">
218 <title>Contents of systemd</title>
219
220 <segmentedlist>
221 <segtitle>Installed programs</segtitle>
222 <segtitle>Installed libraries</segtitle>
223 <segtitle>Installed directories</segtitle>
224
225 <seglistitem>
226 <seg>bootctl, busctl, coredumpctl, halt (symlink to systemctl),
227 hostnamectl, init, journalctl, kernel-install, localectl, loginctl,
228 machinectl, networkctl, portablectl, poweroff (symlink to
229 systemctl), reboot (symlink to systemctl), resolvconf (symlink to
230 resolvectl), resolvectl, runlevel (symlink to systemctl), shutdown
231 (symlink to systemctl), systemctl, systemd-analyze,
232 systemd-ask-password, systemd-cat, systemd-cgls, systemd-cgtop,
233 systemd-delta, systemd-detect-virt, systemd-escape, systemd-hwdb,
234 systemd-id128, systemd-inhibit, systemd-machine-id-setup,
235 systemd-mount, systemd-notify, systemd-nspawn, systemd-path,
236 systemd-resolve (symlink to resolvectl), systemd-run,
237 systemd-socket-activate, systemd-stdio-bridge, systemd-tmpfiles,
238 systemd-tty-ask-password-agent, systemd-umount (symlink to
239 systemd-mount), telinit (symlink to systemctl), timedatectl, and
240 udevadm</seg>
241 <seg>libnss_myhostname.so.2, libnss_mymachines.so.2,
242 libnss_resolve.so.2, libnss_systemd.so.2,
243 libsystemd.so, libsystemd-shared-&systemd-version;.so (in /lib/systemd),
244 and libudev.so</seg>
245 <seg>/etc/binfmt.d, /etc/init.d, /etc/kernel, /etc/modules-load.d,
246 /etc/sysctl.d, /etc/systemd, /etc/tmpfiles.d, /etc/udev,
247 /etc/xdg/systemd, /lib/systemd, /lib/udev, /usr/include/systemd,
248 /usr/lib/binfmt.d, /usr/lib/kernel, /usr/lib/modules-load.d,
249 /usr/lib/sysctl.d, /usr/lib/systemd, /usr/lib/tmpfiles.d,
250 /usr/share/doc/systemd-&systemd-version;, /usr/share/factory,
251 /usr/share/systemd, /var/lib/systemd, and /var/log/journal</seg>
252 </seglistitem>
253 </segmentedlist>
254
255 <variablelist>
256 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
257 <?dbfo list-presentation="list"?>
258 <?dbhtml list-presentation="table"?>
259
260 <varlistentry id="bootctl">
261 <term><command>bootctl</command></term>
262 <listitem>
263 <para>Used to query the firmware and boot manager settings</para>
264 <indexterm zone="ch-system-systemd bootctl">
265 <primary sortas="b-bootctl">bootctl</primary>
266 </indexterm>
267 </listitem>
268 </varlistentry>
269
270 <varlistentry id="busctl">
271 <term><command>busctl</command></term>
272 <listitem>
273 <para>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>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 then 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>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>The first process to be started when the kernel has initialized
319 the hardware which takes over the boot process and starts all
320 processes according to its configuration files</para>
321 <indexterm zone="ch-system-systemd init">
322 <primary sortas="b-init">init</primary>
323 </indexterm>
324 </listitem>
325 </varlistentry>
326
327 <varlistentry id="journalctl">
328 <term><command>journalctl</command></term>
329 <listitem>
330 <para>Used to query the contents of the systemd journal</para>
331 <indexterm zone="ch-system-systemd journalctl">
332 <primary sortas="b-journalctl">journalctl</primary>
333 </indexterm>
334 </listitem>
335 </varlistentry>
336
337 <varlistentry id="kernel-install">
338 <term><command>kernel-install</command></term>
339 <listitem>
340 <para>Used to add and remove kernel and initramfs images to and
341 from /boot</para>
342 <indexterm zone="ch-system-systemd kernel-install">
343 <primary sortas="b-kernel-install">kernel-install</primary>
344 </indexterm>
345 </listitem>
346 </varlistentry>
347
348 <varlistentry id="localectl">
349 <term><command>localectl</command></term>
350 <listitem>
351 <para>Used to query and change the system locale and keyboard layout
352 settings</para>
353 <indexterm zone="ch-system-systemd localectl">
354 <primary sortas="b-localectl">localectl</primary>
355 </indexterm>
356 </listitem>
357 </varlistentry>
358
359 <varlistentry id="loginctl">
360 <term><command>loginctl</command></term>
361 <listitem>
362 <para>Used to introspect and control the state of the systemd Login
363 Manager</para>
364 <indexterm zone="ch-system-systemd loginctl">
365 <primary sortas="b-loginctl">loginctl</primary>
366 </indexterm>
367 </listitem>
368 </varlistentry>
369
370 <varlistentry id="machinectl">
371 <term><command>machinectl</command></term>
372 <listitem>
373 <para>Used to introspect and control the state of the systemd Virtual
374 Machine and Container Registration Manager</para>
375 <indexterm zone="ch-system-systemd machinectl">
376 <primary sortas="b-machinectl">machinectl</primary>
377 </indexterm>
378 </listitem>
379 </varlistentry>
380
381 <varlistentry id="networkctl">
382 <term><command>networkctl</command></term>
383 <listitem>
384 <para>Used to introspect the state of the network links as seen by
385 systemd-networkd</para>
386 <indexterm zone="ch-system-systemd networkctl">
387 <primary sortas="b-networkctl">networkctl</primary>
388 </indexterm>
389 </listitem>
390 </varlistentry>
391
392 <varlistentry id="portablectl">
393 <term><command>portablectl</command></term>
394 <listitem>
395 <para>Used to attach or detach portable services from the local
396 system</para>
397 <indexterm zone="ch-system-systemd portablectl">
398 <primary sortas="b-portablectl">portablectl</primary>
399 </indexterm>
400 </listitem>
401 </varlistentry>
402
403 <varlistentry id="poweroff">
404 <term><command>poweroff</command></term>
405 <listitem>
406 <para>Tells the kernel to halt the system and switch off the computer
407 (see <command>halt</command>)</para>
408 <indexterm zone="ch-system-systemd poweroff">
409 <primary sortas="b-poweroff">poweroff</primary>
410 </indexterm>
411 </listitem>
412 </varlistentry>
413
414 <varlistentry id="reboot">
415 <term><command>reboot</command></term>
416 <listitem>
417 <para>Tells the kernel to reboot the system (see
418 <command>halt</command>)</para>
419 <indexterm zone="ch-system-systemd reboot">
420 <primary sortas="b-reboot">reboot</primary>
421 </indexterm>
422 </listitem>
423 </varlistentry>
424
425 <varlistentry id="resolvconf">
426 <term><command>resolvconf</command></term>
427 <listitem>
428 <para>Register DNS server and domain configuration with
429 <command>systemd-resolved</command></para>
430 <indexterm zone="ch-system-systemd resolvconf">
431 <primary sortas="b-resolvconf">resolvconf</primary>
432 </indexterm>
433 </listitem>
434 </varlistentry>
435
436 <varlistentry id="resolvectl">
437 <term><command>resolvectl</command></term>
438 <listitem>
439 <para>Send control commands to the network name resolution
440 manager, or resolve domain names, IPv4 and IPv6 addresses,
441 DNS records, and services.</para>
442 <indexterm zone="ch-system-systemd resolvectl">
443 <primary sortas="b-resolvectl">resolvectl</primary>
444 </indexterm>
445 </listitem>
446 </varlistentry>
447
448 <varlistentry id="runlevel">
449 <term><command>runlevel</command></term>
450 <listitem>
451 <para>Reports the previous and the current run-level, as noted in the
452 last run-level record in <filename>/var/run/utmp</filename></para>
453 <indexterm zone="ch-system-systemd runlevel">
454 <primary sortas="b-runlevel">runlevel</primary>
455 </indexterm>
456 </listitem>
457 </varlistentry>
458
459 <varlistentry id="shutdown">
460 <term><command>shutdown</command></term>
461 <listitem>
462 <para>Brings the system down in a secure way, signaling all processes
463 and notifying all logged-in users</para>
464 <indexterm zone="ch-system-systemd shutdown">
465 <primary sortas="b-shutdown">shutdown</primary>
466 </indexterm>
467 </listitem>
468 </varlistentry>
469
470 <varlistentry id="systemctl">
471 <term><command>systemctl</command></term>
472 <listitem>
473 <para>Used to introspect and control the state of the systemd system
474 and service manager</para>
475 <indexterm zone="ch-system-systemd systemctl">
476 <primary sortas="b-systemctl">systemctl</primary>
477 </indexterm>
478 </listitem>
479 </varlistentry>
480
481 <varlistentry id="systemd-analyze">
482 <term><command>systemd-analyze</command></term>
483 <listitem>
484 <para>Used to determine system boot-up performance of the current
485 boot</para>
486 <indexterm zone="ch-system-systemd systemd-analyze">
487 <primary sortas="b-systemd-analyze">systemd-analyze</primary>
488 </indexterm>
489 </listitem>
490 </varlistentry>
491
492 <varlistentry id="systemd-ask-password">
493 <term><command>systemd-ask-password</command></term>
494 <listitem>
495 <para>Used to query a system password or passphrase from the user,
496 using a question message specified on the command line</para>
497 <indexterm zone="ch-system-systemd systemd-ask-password">
498 <primary sortas="b-systemd-ask-password">systemd-ask-password</primary>
499 </indexterm>
500 </listitem>
501 </varlistentry>
502
503 <varlistentry id="systemd-cat">
504 <term><command>systemd-cat</command></term>
505 <listitem>
506 <para>Used to connect STDOUT and STDERR of a process with the Journal
507 </para>
508 <indexterm zone="ch-system-systemd systemd-cat">
509 <primary sortas="b-systemd-cat">systemd-cat</primary>
510 </indexterm>
511 </listitem>
512 </varlistentry>
513
514 <varlistentry id="systemd-cgls">
515 <term><command>systemd-cgls</command></term>
516 <listitem>
517 <para>Recursively shows the contents of the selected Linux control
518 group hierarchy in a tree</para>
519 <indexterm zone="ch-system-systemd systemd-cgls">
520 <primary sortas="b-systemd-cgls">systemd-cgls</primary>
521 </indexterm>
522 </listitem>
523 </varlistentry>
524
525 <varlistentry id="systemd-cgtop">
526 <term><command>systemd-cgtop</command></term>
527 <listitem>
528 <para>Shows the top control groups of the local Linux control group
529 hierarchy, ordered by their CPU, memory and disk I/O load</para>
530 <indexterm zone="ch-system-systemd systemd-cgtop">
531 <primary sortas="b-systemd-cgtop">systemd-cgtop</primary>
532 </indexterm>
533 </listitem>
534 </varlistentry>
535
536 <varlistentry id="systemd-delta">
537 <term><command>systemd-delta</command></term>
538 <listitem>
539 <para>Used to identify and compare configuration files in
540 <filename class="directory">/etc</filename> that override default
541 counterparts in <filename class="directory">/usr</filename></para>
542 <indexterm zone="ch-system-systemd systemd-delta">
543 <primary sortas="b-systemd-delta">systemd-delta</primary>
544 </indexterm>
545 </listitem>
546 </varlistentry>
547
548 <varlistentry id="systemd-detect-virt">
549 <term><command>systemd-detect-virt</command></term>
550 <listitem>
551 <para>Detects execution in a virtualized environment</para>
552 <indexterm zone="ch-system-systemd systemd-detect-virt">
553 <primary sortas="b-systemd-detect-virt">systemd-detect-virt</primary>
554 </indexterm>
555 </listitem>
556 </varlistentry>
557
558 <varlistentry id="systemd-escape">
559 <term><command>systemd-escape</command></term>
560 <listitem>
561 <para>Used to escape strings for inclusion in systemd unit
562 names</para>
563 <indexterm zone="ch-system-systemd systemd-escape">
564 <primary sortas="b-systemd-escape">systemd-escape</primary>
565 </indexterm>
566 </listitem>
567 </varlistentry>
568
569 <varlistentry id="systemd-hwdb">
570 <term><command>systemd-hwdb</command></term>
571 <listitem>
572 <para>Used to manage hardware database (hwdb)</para>
573 <indexterm zone="ch-system-systemd systemd-hwdb">
574 <primary sortas="b-systemd-hwdb">systemd-hwdb</primary>
575 </indexterm>
576 </listitem>
577 </varlistentry>
578
579 <varlistentry id="systemd-id128">
580 <term><command>systemd-id128</command></term>
581 <listitem>
582 <para>Generate and print id128 strings</para>
583 <indexterm zone="ch-system-systemd systemd-id128">
584 <primary sortas="b-systemd-id128">systemd-id128</primary>
585 </indexterm>
586 </listitem>
587 </varlistentry>
588
589 <varlistentry id="systemd-inhibit">
590 <term><command>systemd-inhibit</command></term>
591 <listitem>
592 <para>Used to execute a program with a shutdown, sleep or idle
593 inhibitor lock taken</para>
594 <indexterm zone="ch-system-systemd systemd-inhibit">
595 <primary sortas="b-systemd-inhibit">systemd-inhibit</primary>
596 </indexterm>
597 </listitem>
598 </varlistentry>
599
600 <varlistentry id="systemd-machine-id-setup">
601 <term><command>systemd-machine-id-setup</command></term>
602 <listitem>
603 <para>Used by system installer tools to initialize the machine ID
604 stored in <filename>/etc/machine-id</filename> at install time with a
605 randomly generated ID</para>
606 <indexterm zone="ch-system-systemd systemd-machine-id-setup">
607 <primary sortas="b-systemd-machine-id-setup">systemd-machine-id-setup</primary>
608 </indexterm>
609 </listitem>
610 </varlistentry>
611
612 <varlistentry id="systemd-mount">
613 <term><command>systemd-mount</command></term>
614 <listitem>
615 <para>A tool to temporarily mount or auto-mount a drive.</para>
616 <indexterm zone="ch-system-systemd systemd-mount">
617 <primary sortas="b-systemd-mount">systemd-mount</primary>
618 </indexterm>
619 </listitem>
620 </varlistentry>
621
622 <varlistentry id="systemd-notify">
623 <term><command>systemd-notify</command></term>
624 <listitem>
625 <para>Used by daemon scripts to notify the init system about status
626 changes</para>
627 <indexterm zone="ch-system-systemd systemd-notify">
628 <primary sortas="b-systemd-notify">systemd-notify</primary>
629 </indexterm>
630 </listitem>
631 </varlistentry>
632
633 <varlistentry id="systemd-nspawn">
634 <term><command>systemd-nspawn</command></term>
635 <listitem>
636 <para>Used to run a command or OS in a light-weight namespace
637 container</para>
638 <indexterm zone="ch-system-systemd systemd-nspawn">
639 <primary sortas="b-systemd-nspawn">systemd-nspawn</primary>
640 </indexterm>
641 </listitem>
642 </varlistentry>
643
644 <varlistentry id="systemd-path">
645 <term><command>systemd-path</command></term>
646 <listitem>
647 <para>Used to query system and user paths</para>
648 <indexterm zone="ch-system-systemd systemd-path">
649 <primary sortas="b-systemd-path">systemd-path</primary>
650 </indexterm>
651 </listitem>
652 </varlistentry>
653
654 <varlistentry id="systemd-resolve">
655 <term><command>systemd-resolve</command></term>
656 <listitem>
657 <para>Used to resolve domain names, IPV4 and IPv6 addresses, DNS
658 resource records, and services</para>
659 <indexterm zone="ch-system-systemd systemd-resolve">
660 <primary sortas="b-systemd-resolve">systemd-resolve</primary>
661 </indexterm>
662 </listitem>
663 </varlistentry>
664
665 <varlistentry id="systemd-run">
666 <term><command>systemd-run</command></term>
667 <listitem>
668 <para>Used to create and start a transient .service or a .scope unit
669 and run the specified command in it</para>
670 <indexterm zone="ch-system-systemd systemd-run">
671 <primary sortas="b-systemd-run">systemd-run</primary>
672 </indexterm>
673 </listitem>
674 </varlistentry>
675
676 <!-- <varlistentry id="systemd-stdio-bridge">
677 <term><command>systemd-stdio-bridge</command></term>
678 <listitem>
679 <para>To be completed</para>
680 <indexterm zone="ch-system-systemd systemd-stdio-bridge">
681 <primary sortas="b-systemd-stdio-bridge">systemd-stdio-bridge</primary>
682 </indexterm>
683 </listitem>
684 </varlistentry> -->
685
686 <varlistentry id="systemd-socket-activate">
687 <term><command>systemd-socket-activate</command></term>
688 <listitem>
689 <para>A tool to listen on socket devices and launch a process upon
690 connection.</para>
691 <indexterm zone="ch-system-systemd systemd-socket-activate">
692 <primary sortas="b-systemd-socket-activate">systemd-socket-activate</primary>
693 </indexterm>
694 </listitem>
695 </varlistentry>
696
697 <varlistentry id="systemd-tmpfiles">
698 <term><command>systemd-tmpfiles</command></term>
699 <listitem>
700 <para>Creates, deletes and cleans up volatile and temporary files and
701 directories, based on the configuration file format and location
702 specified in
703 <filename class="directory">tmpfiles.d</filename> directories</para>
704 <indexterm zone="ch-system-systemd systemd-tmpfiles">
705 <primary sortas="b-systemd-tmpfiles">systemd-tmpfiles</primary>
706 </indexterm>
707 </listitem>
708 </varlistentry>
709
710 <varlistentry id="systemd-umount">
711 <term><command>systemd-umount</command></term>
712 <listitem>
713 <para>Unmount mount points</para>
714 <indexterm zone="ch-system-systemd systemd-umount">
715 <primary sortas="b-systemd-umount">systemd-umount</primary>
716 </indexterm>
717 </listitem>
718 </varlistentry>
719
720 <varlistentry id="systemd-tty-ask-password-agent">
721 <term><command>systemd-tty-ask-password-agent</command></term>
722 <listitem>
723 <para>Used to list or process pending systemd password requests</para>
724 <indexterm zone="ch-system-systemd systemd-tty-ask-password-agent">
725 <primary sortas="b-systemd-tty-ask-password-agent">systemd-tty-ask-password-agent</primary>
726 </indexterm>
727 </listitem>
728 </varlistentry>
729
730 <varlistentry id="telinit">
731 <term><command>telinit</command></term>
732 <listitem>
733 <para>Tells <command>init</command> which run-level to change
734 to</para>
735 <indexterm zone="ch-system-systemd telinit">
736 <primary sortas="b-telinit">telinit</primary>
737 </indexterm>
738 </listitem>
739 </varlistentry>
740
741 <varlistentry id="timedatectl">
742 <term><command>timedatectl</command></term>
743 <listitem>
744 <para>Used to query and change the system clock and its settings
745 </para>
746 <indexterm zone="ch-system-systemd timedatectl">
747 <primary sortas="b-timedatectl">timedatectl</primary>
748 </indexterm>
749 </listitem>
750 </varlistentry>
751
752 <varlistentry id="udevadm">
753 <term><command>udevadm</command></term>
754 <listitem>
755 <para>Generic udev administration tool: controls the udevd daemon,
756 provides info from the Udev database, monitors uevents, waits for
757 uevents to finish, tests udev configuration, and triggers uevents
758 for a given device</para>
759 <indexterm zone="ch-system-systemd udevadm">
760 <primary sortas="b-udevadm">udevadm</primary>
761 </indexterm>
762 </listitem>
763 </varlistentry>
764
765 <varlistentry id="libsystemd">
766 <term><filename class="libraryfile">libsystemd</filename></term>
767 <listitem>
768 <para>The main systemd utility library</para>
769 <indexterm zone="ch-system-systemd libsystemd">
770 <primary sortas="c-libsystemd">libsystemd</primary>
771 </indexterm>
772 </listitem>
773 </varlistentry>
774
775 <varlistentry id="libudev">
776 <term><filename class="libraryfile">libudev</filename></term>
777 <listitem>
778 <para>A library to access Udev device information</para>
779 <indexterm zone="ch-system-systemd libudev">
780 <primary sortas="c-libudev">libudev</primary>
781 </indexterm>
782 </listitem>
783 </varlistentry>
784
785 </variablelist>
786
787 </sect2>
788
789</sect1>
Note: See TracBrowser for help on using the repository browser.