source: chapter08/util-linux.xml@ 0341ecc

11.2 11.2-rc1 11.3 11.3-rc1 12.0 12.0-rc1 12.1 12.1-rc1 bdubbs/gcc13 multilib renodr/libudev-from-systemd s6-init trunk xry111/arm64 xry111/arm64-12.0 xry111/clfs-ng 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 0341ecc was 0341ecc, checked in by Xi Ruoyao <xry111@…>, 2 years ago

util-linux: remove unnecessary test workaround

According to upstream, this issue is fixed:
https://github.com/util-linux/util-linux/issues/1635.

Also tested by Pierre and me.

  • Property mode set to 100644
File size: 46.4 KB
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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-util-linux" role="wrap">
9 <?dbhtml filename="util-linux.html"?>
10
11 <sect1info condition="script">
12 <productname>util-linux</productname>
13 <productnumber>&util-linux-version;</productnumber>
14 <address>&util-linux-url;</address>
15 </sect1info>
16
17 <title>Util-linux-&util-linux-version;</title>
18
19 <indexterm zone="ch-system-util-linux">
20 <primary sortas="a-Util-linux">Util-linux</primary>
21 </indexterm>
22
23 <sect2 role="package">
24 <title/>
25
26 <para>The Util-linux package contains miscellaneous utility programs.
27 Among them are utilities for handling file systems, consoles, partitions,
28 and messages.</para>
29
30 <segmentedlist>
31 <segtitle>&buildtime;</segtitle>
32 <segtitle>&diskspace;</segtitle>
33
34 <seglistitem>
35 <seg>&util-linux-fin-sbu;</seg>
36 <seg>&util-linux-fin-du;</seg>
37 </seglistitem>
38 </segmentedlist>
39
40 </sect2>
41
42 <sect2 role="installation">
43 <title>Installation of Util-linux</title>
44
45 <para>Prepare Util-linux for compilation:</para>
46
47<screen revision="sysv"><userinput remap="configure">./configure ADJTIME_PATH=/var/lib/hwclock/adjtime \
48 --bindir=/usr/bin \
49 --libdir=/usr/lib \
50 --sbindir=/usr/sbin \
51 --docdir=/usr/share/doc/util-linux-&util-linux-version; \
52 --disable-chfn-chsh \
53 --disable-login \
54 --disable-nologin \
55 --disable-su \
56 --disable-setpriv \
57 --disable-runuser \
58 --disable-pylibmount \
59 --disable-static \
60 --without-python \
61 --without-systemd \
62 --without-systemdsystemunitdir</userinput></screen>
63
64<screen revision="systemd"><userinput remap="configure">./configure ADJTIME_PATH=/var/lib/hwclock/adjtime \
65 --bindir=/usr/bin \
66 --libdir=/usr/lib \
67 --sbindir=/usr/sbin \
68 --docdir=/usr/share/doc/util-linux-&util-linux-version; \
69 --disable-chfn-chsh \
70 --disable-login \
71 --disable-nologin \
72 --disable-su \
73 --disable-setpriv \
74 --disable-runuser \
75 --disable-pylibmount \
76 --disable-static \
77 --without-python</userinput></screen>
78
79 <para>The --disable and --without options prevent warnings about
80 building components that require packages not in LFS or are
81 inconsistent with programs installed by other packages.</para>
82
83 <para>Compile the package:</para>
84
85<screen><userinput remap="make">make</userinput></screen>
86
87 <para>If desired, run the test suite as a non-&root; user:</para>
88
89 <warning><para>Running the test suite as the
90 <systemitem class="username">root</systemitem> user can be harmful to
91 your system. To run it, the CONFIG_SCSI_DEBUG option for the kernel must
92 be available in the currently running system and must be built as a
93 module. Building it into the kernel will prevent booting. For complete
94 coverage, other BLFS packages must be installed. If desired, this test can
95 be run after rebooting into the completed LFS system and running:</para>
96
97<screen role="nodump"><userinput>bash tests/run.sh --srcdir=$PWD --builddir=$PWD</userinput></screen>
98 </warning>
99
100<screen><userinput remap="test">chown -Rv tester .
101su tester -c "make -k check"</userinput></screen>
102
103 <para>The <emphasis>hardlink</emphasis> tests will fail if the host's kernel
104 does not have the option CONFIG_CRYPTO_USER_API_HASH set.</para>
105
106 <para>Install the package:</para>
107
108<screen><userinput remap="install">make install</userinput></screen>
109<!--
110 <para>Finally, install the man pages:</para>
111
112<screen><userinput remap="install">tar -xf ../util-linux-man-pages-&util-linux-version;.tar.xz - -directory /usr/share/man - -strip-components=1</userinput></screen>
113-->
114 </sect2>
115
116 <sect2 id="contents-utillinux" role="content">
117 <title>Contents of Util-linux</title>
118
119 <segmentedlist>
120 <segtitle>Installed programs</segtitle>
121 <segtitle>Installed libraries</segtitle>
122 <segtitle>Installed directories</segtitle>
123
124 <seglistitem>
125 <seg>addpart, agetty, blkdiscard, blkid, blkzone, blockdev, cal, cfdisk, chcpu,
126 chmem, choom, chrt, col, colcrt, colrm, column, ctrlaltdel, delpart, dmesg,
127 eject, fallocate, fdisk, fincore, findfs, findmnt, flock, fsck,
128 fsck.cramfs, fsck.minix, fsfreeze, fstrim, getopt, hexdump, hwclock,
129 i386, ionice, ipcmk, ipcrm, ipcs, irqtop, isosize, kill, last, lastb (link to
130 last), ldattach, linux32, linux64, logger, look, losetup, lsblk, lscpu,
131 lsipc, lsirq, lslocks, lslogins, lsmem, lsns, mcookie, mesg, mkfs, mkfs.bfs, mkfs.cramfs, mkfs.minix, mkswap,
132 more, mount, mountpoint, namei, nsenter, partx, pivot_root, prlimit,
133 readprofile, rename, renice, resizepart, rev, rfkill, rtcwake, script,
134 scriptlive, scriptreplay, setarch, setsid, setterm, sfdisk, sulogin, swaplabel,
135 swapoff (link to swapon), swapon, switch_root, taskset, uclampset, ul,
136 umount, uname26, unshare, utmpdump, uuidd, uuidgen, uuidparse, wall, wdctl, whereis,
137 wipefs, x86_64, and zramctl</seg>
138 <seg>libblkid.so, libfdisk.so, libmount.so,
139 libsmartcols.so, and libuuid.so</seg>
140 <seg>/usr/include/blkid,
141 /usr/include/libfdisk,
142 /usr/include/libmount,
143 /usr/include/libsmartcols,
144 /usr/include/uuid,
145 /usr/share/doc/util-linux-&util-linux-version;,
146 and /var/lib/hwclock</seg>
147 </seglistitem>
148 </segmentedlist>
149
150 <variablelist>
151 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
152 <?dbfo list-presentation="list"?>
153 <?dbhtml list-presentation="table"?>
154
155 <varlistentry id="addpart">
156 <term><command>addpart</command></term>
157 <listitem>
158 <para>Informs the Linux kernel of new partitions</para>
159 <indexterm zone="ch-system-util-linux addpart">
160 <primary sortas="b-addpart">addpart</primary>
161 </indexterm>
162 </listitem>
163 </varlistentry>
164
165 <varlistentry id="agetty">
166 <term><command>agetty</command></term>
167 <listitem>
168 <para>Opens a tty port, prompts for a login name,
169 and then invokes the <command>login</command> program</para>
170 <indexterm zone="ch-system-util-linux agetty">
171 <primary sortas="b-agetty">agetty</primary>
172 </indexterm>
173 </listitem>
174 </varlistentry>
175
176 <varlistentry id="blkdiscard">
177 <term><command>blkdiscard</command></term>
178 <listitem>
179 <para>Discards sectors on a device</para>
180 <indexterm zone="ch-system-util-linux blkdiscard">
181 <primary sortas="b-blkdiscard">blkdiscard</primary>
182 </indexterm>
183 </listitem>
184 </varlistentry>
185
186 <varlistentry id="blkid">
187 <term><command>blkid</command></term>
188 <listitem>
189 <para>A command line utility to locate and print block device
190 attributes</para>
191 <indexterm zone="ch-system-util-linux blkid">
192 <primary sortas="b-blkid">blkid</primary>
193 </indexterm>
194 </listitem>
195 </varlistentry>
196
197 <varlistentry id="blkzone">
198 <term><command>blkzone</command></term>
199 <listitem>
200 <para>Runs zone command on the given block device</para>
201 <indexterm zone="ch-system-util-linux blkzone">
202 <primary sortas="b-blkzone">blkzone</primary>
203 </indexterm>
204 </listitem>
205 </varlistentry>
206
207 <varlistentry id="blockdev">
208 <term><command>blockdev</command></term>
209 <listitem>
210 <para>Allows users to call block device ioctls from the command
211 line</para>
212 <indexterm zone="ch-system-util-linux blockdev">
213 <primary sortas="b-blockdev">blockdev</primary>
214 </indexterm>
215 </listitem>
216 </varlistentry>
217
218 <varlistentry id="cal">
219 <term><command>cal</command></term>
220 <listitem>
221 <para>Displays a simple calendar</para>
222 <indexterm zone="ch-system-util-linux cal">
223 <primary sortas="b-cal">cal</primary>
224 </indexterm>
225 </listitem>
226 </varlistentry>
227
228 <varlistentry id="cfdisk">
229 <term><command>cfdisk</command></term>
230 <listitem>
231 <para>Manipulates the partition table of the given device</para>
232 <indexterm zone="ch-system-util-linux cfdisk">
233 <primary sortas="b-cfdisk">cfdisk</primary>
234 </indexterm>
235 </listitem>
236 </varlistentry>
237
238 <varlistentry id="chcpu">
239 <term><command>chcpu</command></term>
240 <listitem>
241 <para>Modifies the state of CPUs</para>
242 <indexterm zone="ch-system-util-linux chcpu">
243 <primary sortas="b-chcpu">chcpu</primary>
244 </indexterm>
245 </listitem>
246 </varlistentry>
247
248 <varlistentry id="chmem">
249 <term><command>chmem</command></term>
250 <listitem>
251 <para>Configures memory</para>
252 <indexterm zone="ch-system-util-linux chmem">
253 <primary sortas="b-chmem">chmem</primary>
254 </indexterm>
255 </listitem>
256 </varlistentry>
257
258 <varlistentry id="choom">
259 <term><command>choom</command></term>
260 <listitem>
261 <para>Displays and adjusts OOM-killer score</para>
262 <indexterm zone="ch-system-util-linux choom">
263 <primary sortas="b-choom">choom</primary>
264 </indexterm>
265 </listitem>
266 </varlistentry>
267
268 <varlistentry id="chrt">
269 <term><command>chrt</command></term>
270 <listitem>
271 <para>Manipulates real-time attributes of a process</para>
272 <indexterm zone="ch-system-util-linux chrt">
273 <primary sortas="b-chrt">chrt</primary>
274 </indexterm>
275 </listitem>
276 </varlistentry>
277
278 <varlistentry id="col">
279 <term><command>col</command></term>
280 <listitem>
281 <para>Filters out reverse line feeds</para>
282 <indexterm zone="ch-system-util-linux col">
283 <primary sortas="b-col">col</primary>
284 </indexterm>
285 </listitem>
286 </varlistentry>
287
288 <varlistentry id="colcrt">
289 <term><command>colcrt</command></term>
290 <listitem>
291 <para>Filters <command>nroff</command> output for terminals
292 that lack some capabilities, such as overstriking and half-lines</para>
293 <indexterm zone="ch-system-util-linux colcrt">
294 <primary sortas="b-colcrt">colcrt</primary>
295 </indexterm>
296 </listitem>
297 </varlistentry>
298
299 <varlistentry id="colrm">
300 <term><command>colrm</command></term>
301 <listitem>
302 <para>Filters out the given columns</para>
303 <indexterm zone="ch-system-util-linux colrm">
304 <primary sortas="b-colrm">colrm</primary>
305 </indexterm>
306 </listitem>
307 </varlistentry>
308
309 <varlistentry id="column">
310 <term><command>column</command></term>
311 <listitem>
312 <para>Formats a given file into multiple columns</para>
313 <indexterm zone="ch-system-util-linux column">
314 <primary sortas="b-column">column</primary>
315 </indexterm>
316 </listitem>
317 </varlistentry>
318
319 <varlistentry id="ctrlaltdel">
320 <term><command>ctrlaltdel</command></term>
321 <listitem>
322 <para>Sets the function of the Ctrl+Alt+Del key combination to a
323 hard or a soft reset</para>
324 <indexterm zone="ch-system-util-linux ctrlaltdel">
325 <primary sortas="b-ctrlaltdel">ctrlaltdel</primary>
326 </indexterm>
327 </listitem>
328 </varlistentry>
329
330 <varlistentry id="delpart">
331 <term><command>delpart</command></term>
332 <listitem>
333 <para>Asks the Linux kernel to remove a partition</para>
334 <indexterm zone="ch-system-util-linux delpart">
335 <primary sortas="b-delpart">delpart</primary>
336 </indexterm>
337 </listitem>
338 </varlistentry>
339
340 <varlistentry id="dmesg">
341 <term><command>dmesg</command></term>
342 <listitem>
343 <para>Dumps the kernel boot messages</para>
344 <indexterm zone="ch-system-util-linux dmesg">
345 <primary sortas="b-dmesg">dmesg</primary>
346 </indexterm>
347 </listitem>
348 </varlistentry>
349
350 <varlistentry id="eject">
351 <term><command>eject</command></term>
352 <listitem>
353 <para>Ejects removable media</para>
354 <indexterm zone="ch-system-util-linux eject">
355 <primary sortas="b-eject">eject</primary>
356 </indexterm>
357 </listitem>
358 </varlistentry>
359
360 <varlistentry id="fallocate">
361 <term><command>fallocate</command></term>
362 <listitem>
363 <para>Preallocates space to a file</para>
364 <indexterm zone="ch-system-util-linux fallocate">
365 <primary sortas="b-fallocate">fallocate</primary>
366 </indexterm>
367 </listitem>
368 </varlistentry>
369
370 <varlistentry id="fdisk">
371 <term><command>fdisk</command></term>
372 <listitem>
373 <para>Manipulates the partition table of the given device</para>
374 <indexterm zone="ch-system-util-linux fdisk">
375 <primary sortas="b-fdisk">fdisk</primary>
376 </indexterm>
377 </listitem>
378 </varlistentry>
379
380 <varlistentry id="fincore">
381 <term><command>fincore</command></term>
382 <listitem>
383 <para>Counts pages of file contents in core</para>
384 <indexterm zone="ch-system-util-linux fincore">
385 <primary sortas="b-fincore">fincore</primary>
386 </indexterm>
387 </listitem>
388 </varlistentry>
389
390 <varlistentry id="findfs">
391 <term><command>findfs</command></term>
392 <listitem>
393 <para>Finds a file system by label or Universally Unique Identifier
394 (UUID)</para>
395 <indexterm zone="ch-system-util-linux findfs">
396 <primary sortas="b-findfs">findfs</primary>
397 </indexterm>
398 </listitem>
399 </varlistentry>
400
401 <varlistentry id="findmnt">
402 <term><command>findmnt</command></term>
403 <listitem>
404 <para>Is a command line interface to the libmount library
405 for work with mountinfo, fstab and mtab files</para>
406 <indexterm zone="ch-system-util-linux findmnt">
407 <primary sortas="b-findmnt">findmnt</primary>
408 </indexterm>
409 </listitem>
410 </varlistentry>
411
412 <varlistentry id="flock">
413 <term><command>flock</command></term>
414 <listitem>
415 <para>Acquires a file lock and then executes a command with the lock
416 held</para>
417 <indexterm zone="ch-system-util-linux flock">
418 <primary sortas="b-flock">flock</primary>
419 </indexterm>
420 </listitem>
421 </varlistentry>
422
423 <varlistentry id="fsck">
424 <term><command>fsck</command></term>
425 <listitem>
426 <para>Is used to check, and optionally repair, file systems</para>
427 <indexterm zone="ch-system-util-linux fsck">
428 <primary sortas="b-fsck">fsck</primary>
429 </indexterm>
430 </listitem>
431 </varlistentry>
432
433 <varlistentry id="fsck.cramfs">
434 <term><command>fsck.cramfs</command></term>
435 <listitem>
436 <para>Performs a consistency check on the Cramfs file system on the
437 given device</para>
438 <indexterm zone="ch-system-util-linux fsck.cramfs">
439 <primary sortas="b-fsck.cramfs">fsck.cramfs</primary>
440 </indexterm>
441 </listitem>
442 </varlistentry>
443
444 <varlistentry id="fsck.minix">
445 <term><command>fsck.minix</command></term>
446 <listitem>
447 <para>Performs a consistency check on the Minix file system on the
448 given device</para>
449 <indexterm zone="ch-system-util-linux fsck.minix">
450 <primary sortas="b-fsck.minix">fsck.minix</primary>
451 </indexterm>
452 </listitem>
453 </varlistentry>
454
455 <varlistentry id="fsfreeze">
456 <term><command>fsfreeze</command></term>
457 <listitem>
458 <para>Is a very simple wrapper around FIFREEZE/FITHAW ioctl
459 kernel driver operations</para>
460 <indexterm zone="ch-system-util-linux fsfreeze">
461 <primary sortas="b-fsfreeze">fsfreeze</primary>
462 </indexterm>
463 </listitem>
464 </varlistentry>
465
466 <varlistentry id="fstrim">
467 <term><command>fstrim</command></term>
468 <listitem>
469 <para>Discards unused blocks on a mounted filesystem</para>
470 <indexterm zone="ch-system-util-linux fstrim">
471 <primary sortas="b-fstrim">fstrim</primary>
472 </indexterm>
473 </listitem>
474 </varlistentry>
475
476 <varlistentry id="getopt">
477 <term><command>getopt</command></term>
478 <listitem>
479 <para>Parses options in the given command line</para>
480 <indexterm zone="ch-system-util-linux getopt">
481 <primary sortas="b-getopt">getopt</primary>
482 </indexterm>
483 </listitem>
484 </varlistentry>
485
486 <varlistentry id="hexdump">
487 <term><command>hexdump</command></term>
488 <listitem>
489 <para>Dumps the given file in hexadecimal or in another given
490 format</para>
491 <indexterm zone="ch-system-util-linux hexdump">
492 <primary sortas="b-hexdump">hexdump</primary>
493 </indexterm>
494 </listitem>
495 </varlistentry>
496
497 <varlistentry id="hwclock">
498 <term><command>hwclock</command></term>
499 <listitem>
500 <para>Reads or sets the system's hardware clock, also called
501 the Real-Time Clock (RTC) or Basic Input-Output System (BIOS)
502 clock</para>
503 <indexterm zone="ch-system-util-linux hwclock">
504 <primary sortas="b-hwclock">hwclock</primary>
505 </indexterm>
506 </listitem>
507 </varlistentry>
508
509 <varlistentry id="i386">
510 <term><command>i386</command></term>
511 <listitem>
512 <para>A symbolic link to setarch</para>
513 <indexterm zone="ch-system-util-linux i386">
514 <primary sortas="b-i386">i386</primary>
515 </indexterm>
516 </listitem>
517 </varlistentry>
518
519 <varlistentry id="ionice">
520 <term><command>ionice</command></term>
521 <listitem>
522 <para>Gets or sets the io scheduling class and priority for a program</para>
523 <indexterm zone="ch-system-util-linux ionice">
524 <primary sortas="b-ionice">ionice</primary>
525 </indexterm>
526 </listitem>
527 </varlistentry>
528
529 <varlistentry id="ipcmk">
530 <term><command>ipcmk</command></term>
531 <listitem>
532 <para>Creates various IPC resources</para>
533 <indexterm zone="ch-system-util-linux ipcmk">
534 <primary sortas="b-ipcmk">ipcmk</primary>
535 </indexterm>
536 </listitem>
537 </varlistentry>
538
539 <varlistentry id="ipcrm">
540 <term><command>ipcrm</command></term>
541 <listitem>
542 <para>Removes the given Inter-Process Communication (IPC) resource</para>
543 <indexterm zone="ch-system-util-linux ipcrm">
544 <primary sortas="b-ipcrm">ipcrm</primary>
545 </indexterm>
546 </listitem>
547 </varlistentry>
548
549 <varlistentry id="ipcs">
550 <term><command>ipcs</command></term>
551 <listitem>
552 <para>Provides IPC status information</para>
553 <indexterm zone="ch-system-util-linux ipcs">
554 <primary sortas="b-ipcs">ipcs</primary>
555 </indexterm>
556 </listitem>
557 </varlistentry>
558
559 <varlistentry id="irqtop">
560 <term><command>irqtop</command></term>
561 <listitem>
562 <para>Displays kernel interrupt counter information in
563 <filename>top(1)</filename> style view</para>
564 <indexterm zone="ch-system-util-linux irqtop">
565 <primary sortas="b-irqtop">irqtop</primary>
566 </indexterm>
567 </listitem>
568 </varlistentry>
569
570 <varlistentry id="isosize">
571 <term><command>isosize</command></term>
572 <listitem>
573 <para>Reports the size of an iso9660 file system</para>
574 <indexterm zone="ch-system-util-linux isosize">
575 <primary sortas="b-isosize">isosize</primary>
576 </indexterm>
577 </listitem>
578 </varlistentry>
579
580 <varlistentry id="kill">
581 <term><command>kill</command></term>
582 <listitem>
583 <para>Sends signals to processes</para>
584 <indexterm zone="ch-system-util-linux kill">
585 <primary sortas="b-kill">kill</primary>
586 </indexterm>
587 </listitem>
588 </varlistentry>
589
590 <varlistentry id="last">
591 <term><command>last</command></term>
592 <listitem>
593 <para>Shows which users last logged in (and out), searching back
594 through the <filename>/var/log/wtmp</filename> file; it also shows
595 system boots, shutdowns, and run-level changes</para>
596 <indexterm zone="ch-system-util-linux last">
597 <primary sortas="b-last">last</primary>
598 </indexterm>
599 </listitem>
600 </varlistentry>
601
602 <varlistentry id="lastb">
603 <term><command>lastb</command></term>
604 <listitem>
605 <para>Shows the failed login attempts, as logged in
606 <filename>/var/log/btmp</filename></para>
607 <indexterm zone="ch-system-util-linux lastb">
608 <primary sortas="b-lastb">lastb</primary>
609 </indexterm>
610 </listitem>
611 </varlistentry>
612
613 <varlistentry id="ldattach">
614 <term><command>ldattach</command></term>
615 <listitem>
616 <para>Attaches a line discipline to a serial line</para>
617 <indexterm zone="ch-system-util-linux ldattach">
618 <primary sortas="b-ldattach">ldattach</primary>
619 </indexterm>
620 </listitem>
621 </varlistentry>
622
623 <varlistentry id="linux32">
624 <term><command>linux32</command></term>
625 <listitem>
626 <para>A symbolic link to setarch</para>
627 <indexterm zone="ch-system-util-linux linux32">
628 <primary sortas="b-linux32">linux32</primary>
629 </indexterm>
630 </listitem>
631 </varlistentry>
632
633 <varlistentry id="linux64">
634 <term><command>linux64</command></term>
635 <listitem>
636 <para>A symbolic link to setarch</para>
637 <indexterm zone="ch-system-util-linux linux64">
638 <primary sortas="b-linux64">linux64</primary>
639 </indexterm>
640 </listitem>
641 </varlistentry>
642
643 <varlistentry id="logger">
644 <term><command>logger</command></term>
645 <listitem>
646 <para>Enters the given message into the system log</para>
647 <indexterm zone="ch-system-util-linux logger">
648 <primary sortas="b-logger">logger</primary>
649 </indexterm>
650 </listitem>
651 </varlistentry>
652
653 <varlistentry id="look">
654 <term><command>look</command></term>
655 <listitem>
656 <para>Displays lines that begin with the given string</para>
657 <indexterm zone="ch-system-util-linux look">
658 <primary sortas="b-look">look</primary>
659 </indexterm>
660 </listitem>
661 </varlistentry>
662
663 <varlistentry id="losetup">
664 <term><command>losetup</command></term>
665 <listitem>
666 <para>Sets up and controls loop devices</para>
667 <indexterm zone="ch-system-util-linux losetup">
668 <primary sortas="b-losetup">losetup</primary>
669 </indexterm>
670 </listitem>
671 </varlistentry>
672
673 <varlistentry id="lsblk">
674 <term><command>lsblk</command></term>
675 <listitem>
676 <para>Lists information about all or selected block devices in
677 a tree-like format</para>
678 <indexterm zone="ch-system-util-linux lsblk">
679 <primary sortas="b-lsblk">lsblk</primary>
680 </indexterm>
681 </listitem>
682 </varlistentry>
683
684 <varlistentry id="lscpu">
685 <term><command>lscpu</command></term>
686 <listitem>
687 <para>Prints CPU architecture information</para>
688 <indexterm zone="ch-system-util-linux lscpu">
689 <primary sortas="b-lscpu">lscpu</primary>
690 </indexterm>
691 </listitem>
692 </varlistentry>
693
694 <varlistentry id="lsipc">
695 <term><command>lsipc</command></term>
696 <listitem>
697 <para>Prints information on IPC facilities currently employed
698 in the system</para>
699 <indexterm zone="ch-system-util-linux lsipc">
700 <primary sortas="b-lsipc">lsipc</primary>
701 </indexterm>
702 </listitem>
703 </varlistentry>
704
705 <varlistentry id="lsirq">
706 <term><command>lsirq</command></term>
707 <listitem>
708 <para>Displays kernel interrupt counter information</para>
709 <indexterm zone="ch-system-util-linux lsirq">
710 <primary sortas="b-lsirq">lsirq</primary>
711 </indexterm>
712 </listitem>
713 </varlistentry>
714
715 <varlistentry id="lslocks">
716 <term><command>lslocks</command></term>
717 <listitem>
718 <para>Lists local system locks</para>
719 <indexterm zone="ch-system-util-linux lslocks">
720 <primary sortas="b-lslocks">lslocks</primary>
721 </indexterm>
722 </listitem>
723 </varlistentry>
724
725 <varlistentry id="lslogins">
726 <term><command>lslogins</command></term>
727 <listitem>
728 <para>Lists information about users, groups and system accounts</para>
729 <indexterm zone="ch-system-util-linux lslogins">
730 <primary sortas="b-lslogins">lslogins</primary>
731 </indexterm>
732 </listitem>
733 </varlistentry>
734
735 <varlistentry id="lsmem">
736 <term><command>lsmem</command></term>
737 <listitem>
738 <para>Lists the ranges of available memory with their online
739 status</para>
740 <indexterm zone="ch-system-util-linux lsmem">
741 <primary sortas="b-lsmem">lsmem</primary>
742 </indexterm>
743 </listitem>
744 </varlistentry>
745
746 <varlistentry id="lsns">
747 <term><command>lsns</command></term>
748 <listitem>
749 <para>Lists namespaces</para>
750 <indexterm zone="ch-system-util-linux lsns">
751 <primary sortas="b-lsns">lsns</primary>
752 </indexterm>
753 </listitem>
754 </varlistentry>
755
756 <varlistentry id="mcookie">
757 <term><command>mcookie</command></term>
758 <listitem>
759 <para>Generates magic cookies (128-bit random hexadecimal numbers) for
760 <command>xauth</command></para>
761 <indexterm zone="ch-system-util-linux mcookie">
762 <primary sortas="b-mcookie">mcookie</primary>
763 </indexterm>
764 </listitem>
765 </varlistentry>
766
767 <varlistentry id="mesg">
768 <term><command>mesg</command></term>
769 <listitem>
770 <para>Controls whether other users can send messages to the current
771 user's terminal</para>
772 <indexterm zone="ch-system-util-linux mesg">
773 <primary sortas="b-mesg">mesg</primary>
774 </indexterm>
775 </listitem>
776 </varlistentry>
777
778 <varlistentry id="mkfs">
779 <term><command>mkfs</command></term>
780 <listitem>
781 <para>Builds a file system on a device (usually a hard disk
782 partition)</para>
783 <indexterm zone="ch-system-util-linux mkfs">
784 <primary sortas="b-mkfs">mkfs</primary>
785 </indexterm>
786 </listitem>
787 </varlistentry>
788
789 <varlistentry id="mkfs.bfs">
790 <term><command>mkfs.bfs</command></term>
791 <listitem>
792 <para>Creates a Santa Cruz Operations (SCO) bfs file system</para>
793 <indexterm zone="ch-system-util-linux mkfs.bfs">
794 <primary sortas="b-mkfs.bfs">mkfs.bfs</primary>
795 </indexterm>
796 </listitem>
797 </varlistentry>
798
799 <varlistentry id="mkfs.cramfs">
800 <term><command>mkfs.cramfs</command></term>
801 <listitem>
802 <para>Creates a cramfs file system</para>
803 <indexterm zone="ch-system-util-linux mkfs.cramfs">
804 <primary sortas="b-mkfs.cramfs">mkfs.cramfs</primary>
805 </indexterm>
806 </listitem>
807 </varlistentry>
808
809 <varlistentry id="mkfs.minix">
810 <term><command>mkfs.minix</command></term>
811 <listitem>
812 <para>Creates a Minix file system</para>
813 <indexterm zone="ch-system-util-linux mkfs.minix">
814 <primary sortas="b-mkfs.minix">mkfs.minix</primary>
815 </indexterm>
816 </listitem>
817 </varlistentry>
818
819 <varlistentry id="mkswap">
820 <term><command>mkswap</command></term>
821 <listitem>
822 <para>Initializes the given device or file to be used as a swap
823 area</para>
824 <indexterm zone="ch-system-util-linux mkswap">
825 <primary sortas="b-mkswap">mkswap</primary>
826 </indexterm>
827 </listitem>
828 </varlistentry>
829
830 <varlistentry id="more">
831 <term><command>more</command></term>
832 <listitem>
833 <para>A filter for paging through text one screen at a time</para>
834 <indexterm zone="ch-system-util-linux more">
835 <primary sortas="b-more">more</primary>
836 </indexterm>
837 </listitem>
838 </varlistentry>
839
840 <varlistentry id="mount">
841 <term><command>mount</command></term>
842 <listitem>
843 <para>Attaches the file system on the given device to a specified
844 directory in the file-system tree</para>
845 <indexterm zone="ch-system-util-linux mount">
846 <primary sortas="b-mount">mount</primary>
847 </indexterm>
848 </listitem>
849 </varlistentry>
850
851 <varlistentry id="mountpoint">
852 <term><command>mountpoint</command></term>
853 <listitem>
854 <para>Checks if the directory is a mountpoint</para>
855 <indexterm zone="ch-system-util-linux mountpoint">
856 <primary sortas="b-mountpoint">mountpoint</primary>
857 </indexterm>
858 </listitem>
859 </varlistentry>
860
861 <varlistentry id="namei">
862 <term><command>namei</command></term>
863 <listitem>
864 <para>Shows the symbolic links in the given pathnames</para>
865 <indexterm zone="ch-system-util-linux namei">
866 <primary sortas="b-namei">namei</primary>
867 </indexterm>
868 </listitem>
869 </varlistentry>
870
871 <varlistentry id="nsenter">
872 <term><command>nsenter</command></term>
873 <listitem>
874 <para>Runs a program with namespaces of other processes</para>
875 <indexterm zone="ch-system-util-linux nsenter">
876 <primary sortas="b-nsenter">nsenter</primary>
877 </indexterm>
878 </listitem>
879 </varlistentry>
880
881 <varlistentry id="partx">
882 <term><command>partx</command></term>
883 <listitem>
884 <para>Tells the kernel about the presence and numbering of on-disk
885 partitions</para>
886 <indexterm zone="ch-system-util-linux partx">
887 <primary sortas="b-partx">partx</primary>
888 </indexterm>
889 </listitem>
890 </varlistentry>
891
892 <varlistentry id="pivot_root">
893 <term><command>pivot_root</command></term>
894 <listitem>
895 <para>Makes the given file system the new root file system of the
896 current process</para>
897 <indexterm zone="ch-system-util-linux pivot_root">
898 <primary sortas="b-pivot_root">pivot_root</primary>
899 </indexterm>
900 </listitem>
901 </varlistentry>
902
903 <varlistentry id="prlimit">
904 <term><command>prlimit</command></term>
905 <listitem>
906 <para>Get and set a process' resource limits</para>
907 <indexterm zone="ch-system-util-linux prlimit">
908 <primary sortas="b-prlimit">prlimit</primary>
909 </indexterm>
910 </listitem>
911 </varlistentry>
912
913 <varlistentry id="readprofile">
914 <term><command>readprofile</command></term>
915 <listitem>
916 <para>Reads kernel profiling information</para>
917 <indexterm zone="ch-system-util-linux readprofile">
918 <primary sortas="b-readprofile">readprofile</primary>
919 </indexterm>
920 </listitem>
921 </varlistentry>
922
923 <varlistentry id="rename">
924 <term><command>rename</command></term>
925 <listitem>
926 <para>Renames the given files, replacing a given string with
927 another</para>
928 <indexterm zone="ch-system-util-linux rename">
929 <primary sortas="b-rename">rename</primary>
930 </indexterm>
931 </listitem>
932 </varlistentry>
933
934 <varlistentry id="renice">
935 <term><command>renice</command></term>
936 <listitem>
937 <para>Alters the priority of running processes</para>
938 <indexterm zone="ch-system-util-linux renice">
939 <primary sortas="b-renice">renice</primary>
940 </indexterm>
941 </listitem>
942 </varlistentry>
943
944 <varlistentry id="resizepart">
945 <term><command>resizepart</command></term>
946 <listitem>
947 <para>Asks the Linux kernel to resize a partition</para>
948 <indexterm zone="ch-system-util-linux resizepart">
949 <primary sortas="b-resizepart">resizepart</primary>
950 </indexterm>
951 </listitem>
952 </varlistentry>
953
954 <varlistentry id="rev">
955 <term><command>rev</command></term>
956 <listitem>
957 <para>Reverses the lines of a given file</para>
958 <indexterm zone="ch-system-util-linux rev">
959 <primary sortas="b-rev">rev</primary>
960 </indexterm>
961 </listitem>
962 </varlistentry>
963
964 <varlistentry id="rkfill">
965 <term><command>rkfill</command></term>
966 <listitem>
967 <para>Tool for enabling and disabling wireless devices</para>
968 <indexterm zone="ch-system-util-linux rkfill">
969 <primary sortas="b-rkfill">rkfill</primary>
970 </indexterm>
971 </listitem>
972 </varlistentry>
973
974 <varlistentry id="rtcwake">
975 <term><command>rtcwake</command></term>
976 <listitem>
977 <para>Used to enter a system sleep state until specified wakeup
978 time</para>
979 <indexterm zone="ch-system-util-linux rtcwake">
980 <primary sortas="b-rtcwake">rtcwake</primary>
981 </indexterm>
982 </listitem>
983 </varlistentry>
984
985 <varlistentry id="script">
986 <term><command>script</command></term>
987 <listitem>
988 <para>Makes a typescript of a terminal session</para>
989 <indexterm zone="ch-system-util-linux script">
990 <primary sortas="b-script">script</primary>
991 </indexterm>
992 </listitem>
993 </varlistentry>
994
995 <varlistentry id="scriptlive">
996 <term><command>scriptlive</command></term>
997 <listitem>
998 <para>Re-run session typescripts using timing information</para>
999 <indexterm zone="ch-system-util-linux scriptlive">
1000 <primary sortas="b-scriptlive">scriptlive</primary>
1001 </indexterm>
1002 </listitem>
1003 </varlistentry>
1004
1005 <varlistentry id="scriptreplay">
1006 <term><command>scriptreplay</command></term>
1007 <listitem>
1008 <para>Plays back typescripts using timing information</para>
1009 <indexterm zone="ch-system-util-linux scriptreplay">
1010 <primary sortas="b-scriptreplay">scriptreplay</primary>
1011 </indexterm>
1012 </listitem>
1013 </varlistentry>
1014
1015 <varlistentry id="setarch">
1016 <term><command>setarch</command></term>
1017 <listitem>
1018 <para>Changes reported architecture in a new program environment and
1019 sets personality flags</para>
1020 <indexterm zone="ch-system-util-linux setarch">
1021 <primary sortas="b-setarch">setarch</primary>
1022 </indexterm>
1023 </listitem>
1024 </varlistentry>
1025
1026 <varlistentry id="setsid">
1027 <term><command>setsid</command></term>
1028 <listitem>
1029 <para>Runs the given program in a new session</para>
1030 <indexterm zone="ch-system-util-linux setsid">
1031 <primary sortas="b-setsid">setsid</primary>
1032 </indexterm>
1033 </listitem>
1034 </varlistentry>
1035
1036 <varlistentry id="setterm">
1037 <term><command>setterm</command></term>
1038 <listitem>
1039 <para>Sets terminal attributes</para>
1040 <indexterm zone="ch-system-util-linux setterm">
1041 <primary sortas="b-setterm">setterm</primary>
1042 </indexterm>
1043 </listitem>
1044 </varlistentry>
1045
1046 <varlistentry id="sfdisk">
1047 <term><command>sfdisk</command></term>
1048 <listitem>
1049 <para>A disk partition table manipulator</para>
1050 <indexterm zone="ch-system-util-linux sfdisk">
1051 <primary sortas="b-sfdisk">sfdisk</primary>
1052 </indexterm>
1053 </listitem>
1054 </varlistentry>
1055
1056 <varlistentry id="sulogin">
1057 <term><command>sulogin</command></term>
1058 <listitem>
1059 <para>Allows <systemitem class="username">root</systemitem> to log in;
1060 it is normally invoked by <command>init</command> when the system goes
1061 into single user mode</para>
1062 <indexterm zone="ch-system-util-linux sulogin">
1063 <primary sortas="b-sulogin">sulogin</primary>
1064 </indexterm>
1065 </listitem>
1066 </varlistentry>
1067
1068 <varlistentry id="swaplabel">
1069 <term><command>swaplabel</command></term>
1070 <listitem>
1071 <para>Allows to change swaparea UUID and label</para>
1072 <indexterm zone="ch-system-util-linux swaplabel">
1073 <primary sortas="b-swaplabel">swaplabel</primary>
1074 </indexterm>
1075 </listitem>
1076 </varlistentry>
1077
1078 <varlistentry id="swapoff">
1079 <term><command>swapoff</command></term>
1080 <listitem>
1081 <para>Disables devices and files for paging and swapping</para>
1082 <indexterm zone="ch-system-util-linux swapoff">
1083 <primary sortas="b-swapoff">swapoff</primary>
1084 </indexterm>
1085 </listitem>
1086 </varlistentry>
1087
1088 <varlistentry id="swapon">
1089 <term><command>swapon</command></term>
1090 <listitem>
1091 <para>Enables devices and files for paging and swapping and
1092 lists the devices and files currently in use</para>
1093 <indexterm zone="ch-system-util-linux swapon">
1094 <primary sortas="b-swapon">swapon</primary>
1095 </indexterm>
1096 </listitem>
1097 </varlistentry>
1098
1099 <varlistentry id="switch_root">
1100 <term><command>switch_root</command></term>
1101 <listitem>
1102 <para>Switches to another filesystem as the root of the mount tree</para>
1103 <indexterm zone="ch-system-util-linux switch_root">
1104 <primary sortas="b-switch_root">switch_root</primary>
1105 </indexterm>
1106 </listitem>
1107 </varlistentry>
1108
1109 <varlistentry id="taskset">
1110 <term><command>taskset</command></term>
1111 <listitem>
1112 <para>Retrieves or sets a process' CPU affinity</para>
1113 <indexterm zone="ch-system-util-linux taskset">
1114 <primary sortas="b-taskset">taskset</primary>
1115 </indexterm>
1116 </listitem>
1117 </varlistentry>
1118
1119 <varlistentry id="uclampset">
1120 <term><command>uclampset</command></term>
1121 <listitem>
1122 <para>Manipulate the utilization clamping attributes of the
1123 system or a process</para>
1124 <indexterm zone="ch-system-util-linux uclampset">
1125 <primary sortas="b-uclampset">uclampset</primary>
1126 </indexterm>
1127 </listitem>
1128 </varlistentry>
1129
1130 <varlistentry id="ul">
1131 <term><command>ul</command></term>
1132 <listitem>
1133 <para>A filter for translating underscores into escape sequences
1134 indicating underlining for the terminal in use</para>
1135 <indexterm zone="ch-system-util-linux ul">
1136 <primary sortas="b-ul">ul</primary>
1137 </indexterm>
1138 </listitem>
1139 </varlistentry>
1140
1141 <varlistentry id="umount">
1142 <term><command>umount</command></term>
1143 <listitem>
1144 <para>Disconnects a file system from the system's file tree</para>
1145 <indexterm zone="ch-system-util-linux umount">
1146 <primary sortas="b-umount">umount</primary>
1147 </indexterm>
1148 </listitem>
1149 </varlistentry>
1150
1151 <varlistentry id="uname26">
1152 <term><command>uname26</command></term>
1153 <listitem>
1154 <para>A symbolic link to setarch</para>
1155 <indexterm zone="ch-system-util-linux uname26">
1156 <primary sortas="b-uname26">uname26</primary>
1157 </indexterm>
1158 </listitem>
1159 </varlistentry>
1160
1161 <varlistentry id="unshare">
1162 <term><command>unshare</command></term>
1163 <listitem>
1164 <para>Runs a program with some namespaces unshared from parent</para>
1165 <indexterm zone="ch-system-util-linux unshare">
1166 <primary sortas="b-unshare">unshare</primary>
1167 </indexterm>
1168 </listitem>
1169 </varlistentry>
1170
1171 <varlistentry id="utmpdump">
1172 <term><command>utmpdump</command></term>
1173 <listitem>
1174 <para>Displays the content of the given login file in a more
1175 user-friendly format</para>
1176 <indexterm zone="ch-system-util-linux utmpdump">
1177 <primary sortas="b-utmpdump">utmpdump</primary>
1178 </indexterm>
1179 </listitem>
1180 </varlistentry>
1181
1182 <varlistentry id="uuidd">
1183 <term><command>uuidd</command></term>
1184 <listitem>
1185 <para>A daemon used by the UUID library to generate time-based
1186 UUIDs in a secure and guaranteed-unique fashion</para>
1187 <indexterm zone="ch-system-util-linux uuidd">
1188 <primary sortas="b-uuidd">uuidd</primary>
1189 </indexterm>
1190 </listitem>
1191 </varlistentry>
1192
1193 <varlistentry id="uuidgen">
1194 <term><command>uuidgen</command></term>
1195 <listitem>
1196 <para>Creates new UUIDs. Each new UUID can reasonably be considered
1197 unique among all UUIDs created, on the local system and on other
1198 systems, in the past and in the future</para>
1199 <indexterm zone="ch-system-util-linux uuidgen">
1200 <primary sortas="b-uuidgen">uuidgen</primary>
1201 </indexterm>
1202 </listitem>
1203 </varlistentry>
1204
1205 <varlistentry id="uuidparse">
1206 <term><command>uuidparse</command></term>
1207 <listitem>
1208 <para>An utility to parse unique identifiers</para>
1209 <indexterm zone="ch-system-util-linux uuidparse">
1210 <primary sortas="b-uuidparse">uuidparse</primary>
1211 </indexterm>
1212 </listitem>
1213 </varlistentry>
1214
1215 <varlistentry id="wall">
1216 <term><command>wall</command></term>
1217 <listitem>
1218 <para>Displays the contents of a file or, by default, its standard
1219 input, on the terminals of all currently logged in users</para>
1220 <indexterm zone="ch-system-util-linux wall">
1221 <primary sortas="b-wall">wall</primary>
1222 </indexterm>
1223 </listitem>
1224 </varlistentry>
1225
1226 <varlistentry id="wdctl">
1227 <term><command>wdctl</command></term>
1228 <listitem>
1229 <para>Shows hardware watchdog status</para>
1230 <indexterm zone="ch-system-util-linux wdctl">
1231 <primary sortas="b-wdctl">wdctl</primary>
1232 </indexterm>
1233 </listitem>
1234 </varlistentry>
1235
1236 <varlistentry id="whereis">
1237 <term><command>whereis</command></term>
1238 <listitem>
1239 <para>Reports the location of the binary, source, and man page
1240 for the given command</para>
1241 <indexterm zone="ch-system-util-linux whereis">
1242 <primary sortas="b-whereis">whereis</primary>
1243 </indexterm>
1244 </listitem>
1245 </varlistentry>
1246
1247 <varlistentry id="wipefs">
1248 <term><command>wipefs</command></term>
1249 <listitem>
1250 <para>Wipes a filesystem signature from a device</para>
1251 <indexterm zone="ch-system-util-linux wipefs">
1252 <primary sortas="b-wipefs">wipefs</primary>
1253 </indexterm>
1254 </listitem>
1255 </varlistentry>
1256
1257 <varlistentry id="x86_64">
1258 <term><command>x86_64</command></term>
1259 <listitem>
1260 <para>A symbolic link to setarch</para>
1261 <indexterm zone="ch-system-util-linux x86_64">
1262 <primary sortas="b-x86_64">x86_64</primary>
1263 </indexterm>
1264 </listitem>
1265 </varlistentry>
1266
1267 <varlistentry id="zramctl">
1268 <term><command>zramctl</command></term>
1269 <listitem>
1270 <para>A program to set up and control zram (compressed ram disk)
1271 devices</para>
1272 <indexterm zone="ch-system-util-linux zramctl">
1273 <primary sortas="b-zramctl">zramctl</primary>
1274 </indexterm>
1275 </listitem>
1276 </varlistentry>
1277
1278 <varlistentry id="libblkid">
1279 <term><filename class="libraryfile">libblkid</filename></term>
1280 <listitem>
1281 <para>Contains routines for device identification and token
1282 extraction</para>
1283 <indexterm zone="ch-system-util-linux libblkid">
1284 <primary sortas="c-libblkid">libblkid</primary>
1285 </indexterm>
1286 </listitem>
1287 </varlistentry>
1288
1289 <varlistentry id="libfdisk">
1290 <term><filename class="libraryfile">libfdisk</filename></term>
1291 <listitem>
1292 <para>Contains routines for manipulating partition tables</para>
1293 <indexterm zone="ch-system-util-linux libfdisk">
1294 <primary sortas="c-libfdisk">libfdisk</primary>
1295 </indexterm>
1296 </listitem>
1297 </varlistentry>
1298
1299 <varlistentry id="libmount">
1300 <term><filename class="libraryfile">libmount</filename></term>
1301 <listitem>
1302 <para>Contains routines for block device mounting and
1303 unmounting</para>
1304 <indexterm zone="ch-system-util-linux libmount">
1305 <primary sortas="c-libmount">libmount</primary>
1306 </indexterm>
1307 </listitem>
1308 </varlistentry>
1309
1310 <varlistentry id="libsmartcols">
1311 <term><filename class="libraryfile">libsmartcols</filename></term>
1312 <listitem>
1313 <para>Contains routines for aiding screen output in tabular form</para>
1314 <indexterm zone="ch-system-util-linux libsmartcols">
1315 <primary sortas="c-libsmartcols">libsmartcols</primary>
1316 </indexterm>
1317 </listitem>
1318 </varlistentry>
1319
1320 <varlistentry id="libuuid">
1321 <term><filename class="libraryfile">libuuid</filename></term>
1322 <listitem>
1323 <para>Contains routines for generating unique identifiers for objects
1324 that may be accessible beyond the local system</para>
1325 <indexterm zone="ch-system-util-linux libuuid">
1326 <primary sortas="c-libuuid">libuuid</primary>
1327 </indexterm>
1328 </listitem>
1329 </varlistentry>
1330
1331 </variablelist>
1332
1333 </sect2>
1334
1335</sect1>
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