source: chapter08/util-linux.xml@ a2434bd4

multilib
Last change on this file since a2434bd4 was 410c6f8, checked in by Thomas Trepl <thomas@…>, 17 months ago

Automatic merge of trunk into multilib

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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 --disable-chfn-chsh \
52 --disable-login \
53 --disable-nologin \
54 --disable-su \
55 --disable-setpriv \
56 --disable-runuser \
57 --disable-pylibmount \
58 --disable-static \
59 --without-python \
60 --without-systemd \
61 --without-systemdsystemunitdir \
62 --docdir=/usr/share/doc/util-linux-&util-linux-version;</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 --disable-chfn-chsh \
69 --disable-login \
70 --disable-nologin \
71 --disable-su \
72 --disable-setpriv \
73 --disable-runuser \
74 --disable-pylibmount \
75 --disable-static \
76 --without-python \
77 --docdir=/usr/share/doc/util-linux-&util-linux-version;</userinput></screen>
78
79 <para>The --disable and --without options prevent warnings about
80 building components that either 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 by booting 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 <!-- - - - - - - - - - -->
117 <!-- Multilib - 32bit -->
118 <!-- - - - - - - - - - -->
119
120 <sect2 arch="ml_32,ml_all" role="installation">
121 <title>Installation of Util-linux - 32-bit</title>
122
123 <para>Clean previous build:</para>
124
125<screen><userinput remap="pre">make distclean</userinput></screen>
126
127 <para>Move a tool out of the way which is optionally used by
128 configure but will report invalid pathes for multilib builds.</para>
129
130<screen><userinput remap="configure">mv /usr/bin/ncursesw6-config{,.tmp}</userinput></screen>
131
132 <para>Prepare Util-linux for compilation:</para>
133
134<screen revision="sysv"><userinput remap="configure">CC="gcc -m32" \
135./configure ADJTIME_PATH=/var/lib/hwclock/adjtime \
136 --host=i686-pc-linux-gnu \
137 --libdir=/usr/lib32 \
138 --docdir=/usr/share/doc/util-linux-&util-linux-version; \
139 --disable-chfn-chsh \
140 --disable-login \
141 --disable-nologin \
142 --disable-su \
143 --disable-setpriv \
144 --disable-runuser \
145 --disable-pylibmount \
146 --disable-static \
147 --without-python \
148 --without-systemd \
149 --without-systemdsystemunitdir</userinput></screen>
150
151<screen revision="systemd"><userinput remap="configure">CC="gcc -m32" \
152./configure ADJTIME_PATH=/var/lib/hwclock/adjtime \
153 --host=i686-pc-linux-gnu \
154 --libdir=/usr/lib32 \
155 --docdir=/usr/share/doc/util-linux-&util-linux-version; \
156 --disable-chfn-chsh \
157 --disable-login \
158 --disable-nologin \
159 --disable-su \
160 --disable-setpriv \
161 --disable-runuser \
162 --disable-pylibmount \
163 --disable-static \
164 --without-python</userinput></screen>
165
166 <para>Restore the tool previously moved away:</para>
167
168<screen><userinput remap="configure">mv /usr/bin/ncursesw6-config{.tmp,}</userinput></screen>
169
170 <para>Compile the package:</para>
171
172<screen><userinput remap="make">make</userinput></screen>
173
174 <para>Install the package:</para>
175
176<screen><userinput remap="install">make DESTDIR=$PWD/DESTDIR install
177cp -Rv DESTDIR/usr/lib32/* /usr/lib32
178rm -rf DESTDIR</userinput></screen>
179
180 </sect2><!-- m32 -->
181
182 <!-- - - - - - - - - - -->
183 <!-- Multilib - x32bit -->
184 <!-- - - - - - - - - - -->
185
186 <sect2 arch="ml_x32,ml_all" role="installation">
187 <title>Installation of Util-linux - x32-bit</title>
188
189 <para>Clean previous build:</para>
190
191<screen><userinput remap="pre">make distclean</userinput></screen>
192
193 <para>Move a tool out of the way which is optionally used by
194 configure but will report invalid pathes for multilib builds.</para>
195
196<screen><userinput remap="configure">mv /usr/bin/ncursesw6-config{,.tmp}</userinput></screen>
197
198 <para>Prepare Util-linux for compilation:</para>
199
200<screen revision="sysv"><userinput remap="configure">CC="gcc -mx32" \
201./configure ADJTIME_PATH=/var/lib/hwclock/adjtime \
202 --host=x86_64-pc-linux-gnux32 \
203 --libdir=/usr/libx32 \
204 --docdir=/usr/share/doc/util-linux-&util-linux-version; \
205 --disable-chfn-chsh \
206 --disable-login \
207 --disable-nologin \
208 --disable-su \
209 --disable-setpriv \
210 --disable-runuser \
211 --disable-pylibmount \
212 --disable-static \
213 --without-python \
214 --without-systemd \
215 --without-systemdsystemunitdir</userinput></screen>
216
217<screen revision="systemd"><userinput remap="configure">CC="gcc -mx32" \
218./configure ADJTIME_PATH=/var/lib/hwclock/adjtime \
219 --host=x86_64-pc-linux-gnux32 \
220 --libdir=/usr/libx32 \
221 --docdir=/usr/share/doc/util-linux-&util-linux-version; \
222 --disable-chfn-chsh \
223 --disable-login \
224 --disable-nologin \
225 --disable-su \
226 --disable-setpriv \
227 --disable-runuser \
228 --disable-pylibmount \
229 --disable-static \
230 --without-python</userinput></screen>
231
232 <para>Restore the tool previously moved away:</para>
233
234<screen><userinput remap="configure">mv /usr/bin/ncursesw6-config{.tmp,}</userinput></screen>
235
236 <para>Compile the package:</para>
237
238<screen><userinput remap="make">make</userinput></screen>
239
240 <para>Install the package:</para>
241
242<screen><userinput remap="install">make DESTDIR=$PWD/DESTDIR install
243cp -Rv DESTDIR/usr/libx32/* /usr/libx32
244rm -rf DESTDIR</userinput></screen>
245
246 </sect2><!-- mx32 -->
247
248 <sect2 id="contents-utillinux" role="content">
249 <title>Contents of Util-linux</title>
250
251 <segmentedlist>
252 <segtitle>Installed programs</segtitle>
253 <segtitle>Installed libraries</segtitle>
254 <segtitle>Installed directories</segtitle>
255
256 <seglistitem>
257 <seg>addpart, agetty, blkdiscard, blkid, blkzone, blockdev, cal, cfdisk, chcpu,
258 chmem, choom, chrt, col, colcrt, colrm, column, ctrlaltdel, delpart, dmesg,
259 eject, fallocate, fdisk, fincore, findfs, findmnt, flock, fsck,
260 fsck.cramfs, fsck.minix, fsfreeze, fstrim, getopt, hardlink, hexdump, hwclock,
261 i386 (link to setarch), ionice, ipcmk, ipcrm, ipcs, irqtop, isosize, kill, last,
262 lastb (link to last), ldattach, linux32 (link to setarch), linux64 (link to setarch),
263 logger, look, losetup, lsblk, lscpu, lsipc, lsirq, lsfd, lslocks, lslogins,
264 lsmem, lsns, mcookie, mesg, mkfs, mkfs.bfs, mkfs.cramfs, mkfs.minix, mkswap,
265 more, mount, mountpoint, namei, nsenter, partx, pivot_root, prlimit,
266 readprofile, rename, renice, resizepart, rev, rfkill, rtcwake, script,
267 scriptlive, scriptreplay, setarch, setsid, setterm, sfdisk, sulogin, swaplabel,
268 swapoff, swapon, switch_root, taskset, uclampset, ul,
269 umount, uname26 (link to setarch), unshare, utmpdump, uuidd, uuidgen, uuidparse,
270 wall, wdctl, whereis, wipefs, x86_64 (link to setarch), and zramctl</seg>
271 <seg>libblkid.so, libfdisk.so, libmount.so,
272 libsmartcols.so, and libuuid.so</seg>
273 <seg>/usr/include/blkid,
274 /usr/include/libfdisk,
275 /usr/include/libmount,
276 /usr/include/libsmartcols,
277 /usr/include/uuid,
278 /usr/share/doc/util-linux-&util-linux-version;,
279 and /var/lib/hwclock</seg>
280 </seglistitem>
281 </segmentedlist>
282
283 <variablelist>
284 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
285 <?dbfo list-presentation="list"?>
286 <?dbhtml list-presentation="table"?>
287
288 <varlistentry id="addpart">
289 <term><command>addpart</command></term>
290 <listitem>
291 <para>Informs the Linux kernel of new partitions</para>
292 <indexterm zone="ch-system-util-linux addpart">
293 <primary sortas="b-addpart">addpart</primary>
294 </indexterm>
295 </listitem>
296 </varlistentry>
297
298 <varlistentry id="agetty">
299 <term><command>agetty</command></term>
300 <listitem>
301 <para>Opens a tty port, prompts for a login name,
302 and then invokes the <command>login</command> program</para>
303 <indexterm zone="ch-system-util-linux agetty">
304 <primary sortas="b-agetty">agetty</primary>
305 </indexterm>
306 </listitem>
307 </varlistentry>
308
309 <varlistentry id="blkdiscard">
310 <term><command>blkdiscard</command></term>
311 <listitem>
312 <para>Discards sectors on a device</para>
313 <indexterm zone="ch-system-util-linux blkdiscard">
314 <primary sortas="b-blkdiscard">blkdiscard</primary>
315 </indexterm>
316 </listitem>
317 </varlistentry>
318
319 <varlistentry id="blkid">
320 <term><command>blkid</command></term>
321 <listitem>
322 <para>A command line utility to locate and print block device
323 attributes</para>
324 <indexterm zone="ch-system-util-linux blkid">
325 <primary sortas="b-blkid">blkid</primary>
326 </indexterm>
327 </listitem>
328 </varlistentry>
329
330 <varlistentry id="blkzone">
331 <term><command>blkzone</command></term>
332 <listitem>
333 <para>Is used to manage zoned storage block devices</para>
334 <indexterm zone="ch-system-util-linux blkzone">
335 <primary sortas="b-blkzone">blkzone</primary>
336 </indexterm>
337 </listitem>
338 </varlistentry>
339
340 <varlistentry id="blockdev">
341 <term><command>blockdev</command></term>
342 <listitem>
343 <para>Allows users to call block device ioctls from the command
344 line</para>
345 <indexterm zone="ch-system-util-linux blockdev">
346 <primary sortas="b-blockdev">blockdev</primary>
347 </indexterm>
348 </listitem>
349 </varlistentry>
350
351 <varlistentry id="cal">
352 <term><command>cal</command></term>
353 <listitem>
354 <para>Displays a simple calendar</para>
355 <indexterm zone="ch-system-util-linux cal">
356 <primary sortas="b-cal">cal</primary>
357 </indexterm>
358 </listitem>
359 </varlistentry>
360
361 <varlistentry id="cfdisk">
362 <term><command>cfdisk</command></term>
363 <listitem>
364 <para>Manipulates the partition table of the given device</para>
365 <indexterm zone="ch-system-util-linux cfdisk">
366 <primary sortas="b-cfdisk">cfdisk</primary>
367 </indexterm>
368 </listitem>
369 </varlistentry>
370
371 <varlistentry id="chcpu">
372 <term><command>chcpu</command></term>
373 <listitem>
374 <para>Modifies the state of CPUs</para>
375 <indexterm zone="ch-system-util-linux chcpu">
376 <primary sortas="b-chcpu">chcpu</primary>
377 </indexterm>
378 </listitem>
379 </varlistentry>
380
381 <varlistentry id="chmem">
382 <term><command>chmem</command></term>
383 <listitem>
384 <para>Configures memory</para>
385 <indexterm zone="ch-system-util-linux chmem">
386 <primary sortas="b-chmem">chmem</primary>
387 </indexterm>
388 </listitem>
389 </varlistentry>
390
391 <varlistentry id="choom">
392 <term><command>choom</command></term>
393 <listitem>
394 <para>Displays and adjusts OOM-killer scores, used to determine
395 which process to kill first when Linux is Out Of Memory</para>
396 <indexterm zone="ch-system-util-linux choom">
397 <primary sortas="b-choom">choom</primary>
398 </indexterm>
399 </listitem>
400 </varlistentry>
401
402 <varlistentry id="chrt">
403 <term><command>chrt</command></term>
404 <listitem>
405 <para>Manipulates real-time attributes of a process</para>
406 <indexterm zone="ch-system-util-linux chrt">
407 <primary sortas="b-chrt">chrt</primary>
408 </indexterm>
409 </listitem>
410 </varlistentry>
411
412 <varlistentry id="col">
413 <term><command>col</command></term>
414 <listitem>
415 <para>Filters out reverse line feeds</para>
416 <indexterm zone="ch-system-util-linux col">
417 <primary sortas="b-col">col</primary>
418 </indexterm>
419 </listitem>
420 </varlistentry>
421
422 <varlistentry id="colcrt">
423 <term><command>colcrt</command></term>
424 <listitem>
425 <para>Filters <command>nroff</command> output for terminals
426 that lack some capabilities, such as overstriking and half-lines</para>
427 <indexterm zone="ch-system-util-linux colcrt">
428 <primary sortas="b-colcrt">colcrt</primary>
429 </indexterm>
430 </listitem>
431 </varlistentry>
432
433 <varlistentry id="colrm">
434 <term><command>colrm</command></term>
435 <listitem>
436 <para>Filters out the given columns</para>
437 <indexterm zone="ch-system-util-linux colrm">
438 <primary sortas="b-colrm">colrm</primary>
439 </indexterm>
440 </listitem>
441 </varlistentry>
442
443 <varlistentry id="column">
444 <term><command>column</command></term>
445 <listitem>
446 <para>Formats a given file into multiple columns</para>
447 <indexterm zone="ch-system-util-linux column">
448 <primary sortas="b-column">column</primary>
449 </indexterm>
450 </listitem>
451 </varlistentry>
452
453 <varlistentry id="ctrlaltdel">
454 <term><command>ctrlaltdel</command></term>
455 <listitem>
456 <para>Sets the function of the Ctrl+Alt+Del key combination to a
457 hard or a soft reset</para>
458 <indexterm zone="ch-system-util-linux ctrlaltdel">
459 <primary sortas="b-ctrlaltdel">ctrlaltdel</primary>
460 </indexterm>
461 </listitem>
462 </varlistentry>
463
464 <varlistentry id="delpart">
465 <term><command>delpart</command></term>
466 <listitem>
467 <para>Asks the Linux kernel to remove a partition</para>
468 <indexterm zone="ch-system-util-linux delpart">
469 <primary sortas="b-delpart">delpart</primary>
470 </indexterm>
471 </listitem>
472 </varlistentry>
473
474 <varlistentry id="dmesg">
475 <term><command>dmesg</command></term>
476 <listitem>
477 <para>Dumps the kernel boot messages</para>
478 <indexterm zone="ch-system-util-linux dmesg">
479 <primary sortas="b-dmesg">dmesg</primary>
480 </indexterm>
481 </listitem>
482 </varlistentry>
483
484 <varlistentry id="eject">
485 <term><command>eject</command></term>
486 <listitem>
487 <para>Ejects removable media</para>
488 <indexterm zone="ch-system-util-linux eject">
489 <primary sortas="b-eject">eject</primary>
490 </indexterm>
491 </listitem>
492 </varlistentry>
493
494 <varlistentry id="fallocate">
495 <term><command>fallocate</command></term>
496 <listitem>
497 <para>Preallocates space to a file</para>
498 <indexterm zone="ch-system-util-linux fallocate">
499 <primary sortas="b-fallocate">fallocate</primary>
500 </indexterm>
501 </listitem>
502 </varlistentry>
503
504 <varlistentry id="fdisk">
505 <term><command>fdisk</command></term>
506 <listitem>
507 <para>Manipulates the partition table of the given device</para>
508 <indexterm zone="ch-system-util-linux fdisk">
509 <primary sortas="b-fdisk">fdisk</primary>
510 </indexterm>
511 </listitem>
512 </varlistentry>
513
514 <varlistentry id="fincore">
515 <term><command>fincore</command></term>
516 <listitem>
517 <para>Counts pages of file contents in core</para>
518 <indexterm zone="ch-system-util-linux fincore">
519 <primary sortas="b-fincore">fincore</primary>
520 </indexterm>
521 </listitem>
522 </varlistentry>
523
524 <varlistentry id="findfs">
525 <term><command>findfs</command></term>
526 <listitem>
527 <para>Finds a file system, either by label or Universally Unique Identifier
528 (UUID)</para>
529 <indexterm zone="ch-system-util-linux findfs">
530 <primary sortas="b-findfs">findfs</primary>
531 </indexterm>
532 </listitem>
533 </varlistentry>
534
535 <varlistentry id="findmnt">
536 <term><command>findmnt</command></term>
537 <listitem>
538 <para>Is a command line interface to the libmount library
539 for working with mountinfo, fstab and mtab files</para>
540 <indexterm zone="ch-system-util-linux findmnt">
541 <primary sortas="b-findmnt">findmnt</primary>
542 </indexterm>
543 </listitem>
544 </varlistentry>
545
546 <varlistentry id="flock">
547 <term><command>flock</command></term>
548 <listitem>
549 <para>Acquires a file lock and then executes a command with the lock
550 held</para>
551 <indexterm zone="ch-system-util-linux flock">
552 <primary sortas="b-flock">flock</primary>
553 </indexterm>
554 </listitem>
555 </varlistentry>
556
557 <varlistentry id="fsck">
558 <term><command>fsck</command></term>
559 <listitem>
560 <para>Is used to check, and optionally repair, file systems</para>
561 <indexterm zone="ch-system-util-linux fsck">
562 <primary sortas="b-fsck">fsck</primary>
563 </indexterm>
564 </listitem>
565 </varlistentry>
566
567 <varlistentry id="fsck.cramfs">
568 <term><command>fsck.cramfs</command></term>
569 <listitem>
570 <para>Performs a consistency check on the Cramfs file system on the
571 given device</para>
572 <indexterm zone="ch-system-util-linux fsck.cramfs">
573 <primary sortas="b-fsck.cramfs">fsck.cramfs</primary>
574 </indexterm>
575 </listitem>
576 </varlistentry>
577
578 <varlistentry id="fsck.minix">
579 <term><command>fsck.minix</command></term>
580 <listitem>
581 <para>Performs a consistency check on the Minix file system on the
582 given device</para>
583 <indexterm zone="ch-system-util-linux fsck.minix">
584 <primary sortas="b-fsck.minix">fsck.minix</primary>
585 </indexterm>
586 </listitem>
587 </varlistentry>
588
589 <varlistentry id="fsfreeze">
590 <term><command>fsfreeze</command></term>
591 <listitem>
592 <para>Is a very simple wrapper around FIFREEZE/FITHAW ioctl
593 kernel driver operations</para>
594 <indexterm zone="ch-system-util-linux fsfreeze">
595 <primary sortas="b-fsfreeze">fsfreeze</primary>
596 </indexterm>
597 </listitem>
598 </varlistentry>
599
600 <varlistentry id="fstrim">
601 <term><command>fstrim</command></term>
602 <listitem>
603 <para>Discards unused blocks on a mounted filesystem</para>
604 <indexterm zone="ch-system-util-linux fstrim">
605 <primary sortas="b-fstrim">fstrim</primary>
606 </indexterm>
607 </listitem>
608 </varlistentry>
609
610 <varlistentry id="getopt">
611 <term><command>getopt</command></term>
612 <listitem>
613 <para>Parses options in the given command line</para>
614 <indexterm zone="ch-system-util-linux getopt">
615 <primary sortas="b-getopt">getopt</primary>
616 </indexterm>
617 </listitem>
618 </varlistentry>
619
620 <varlistentry id="hardlink">
621 <term><command>hardlink</command></term>
622 <listitem>
623 <para>Consolidates duplicate files by creating hard links</para>
624 <indexterm zone="ch-system-util-linux hardlink">
625 <primary sortas="b-hardlink">hardlink</primary>
626 </indexterm>
627 </listitem>
628 </varlistentry>
629
630 <varlistentry id="hexdump">
631 <term><command>hexdump</command></term>
632 <listitem>
633 <para>Dumps the given file in hexadecimal, decimal, octal,
634 or ascii</para>
635 <indexterm zone="ch-system-util-linux hexdump">
636 <primary sortas="b-hexdump">hexdump</primary>
637 </indexterm>
638 </listitem>
639 </varlistentry>
640
641 <varlistentry id="hwclock">
642 <term><command>hwclock</command></term>
643 <listitem>
644 <para>Reads or sets the system's hardware clock, also called
645 the Real-Time Clock (RTC) or Basic Input-Output System (BIOS)
646 clock</para>
647 <indexterm zone="ch-system-util-linux hwclock">
648 <primary sortas="b-hwclock">hwclock</primary>
649 </indexterm>
650 </listitem>
651 </varlistentry>
652
653 <varlistentry id="i386">
654 <term><command>i386</command></term>
655 <listitem>
656 <para>A symbolic link to setarch</para>
657 <indexterm zone="ch-system-util-linux i386">
658 <primary sortas="b-i386">i386</primary>
659 </indexterm>
660 </listitem>
661 </varlistentry>
662
663 <varlistentry id="ionice">
664 <term><command>ionice</command></term>
665 <listitem>
666 <para>Gets or sets the io scheduling class and priority for a program</para>
667 <indexterm zone="ch-system-util-linux ionice">
668 <primary sortas="b-ionice">ionice</primary>
669 </indexterm>
670 </listitem>
671 </varlistentry>
672
673 <varlistentry id="ipcmk">
674 <term><command>ipcmk</command></term>
675 <listitem>
676 <para>Creates various IPC resources</para>
677 <indexterm zone="ch-system-util-linux ipcmk">
678 <primary sortas="b-ipcmk">ipcmk</primary>
679 </indexterm>
680 </listitem>
681 </varlistentry>
682
683 <varlistentry id="ipcrm">
684 <term><command>ipcrm</command></term>
685 <listitem>
686 <para>Removes the given Inter-Process Communication (IPC) resource</para>
687 <indexterm zone="ch-system-util-linux ipcrm">
688 <primary sortas="b-ipcrm">ipcrm</primary>
689 </indexterm>
690 </listitem>
691 </varlistentry>
692
693 <varlistentry id="ipcs">
694 <term><command>ipcs</command></term>
695 <listitem>
696 <para>Provides IPC status information</para>
697 <indexterm zone="ch-system-util-linux ipcs">
698 <primary sortas="b-ipcs">ipcs</primary>
699 </indexterm>
700 </listitem>
701 </varlistentry>
702
703 <varlistentry id="irqtop">
704 <term><command>irqtop</command></term>
705 <listitem>
706 <para>Displays kernel interrupt counter information in
707 <filename>top(1)</filename> style view</para>
708 <indexterm zone="ch-system-util-linux irqtop">
709 <primary sortas="b-irqtop">irqtop</primary>
710 </indexterm>
711 </listitem>
712 </varlistentry>
713
714 <varlistentry id="isosize">
715 <term><command>isosize</command></term>
716 <listitem>
717 <para>Reports the size of an iso9660 file system</para>
718 <indexterm zone="ch-system-util-linux isosize">
719 <primary sortas="b-isosize">isosize</primary>
720 </indexterm>
721 </listitem>
722 </varlistentry>
723
724 <varlistentry id="kill">
725 <term><command>kill</command></term>
726 <listitem>
727 <para>Sends signals to processes</para>
728 <indexterm zone="ch-system-util-linux kill">
729 <primary sortas="b-kill">kill</primary>
730 </indexterm>
731 </listitem>
732 </varlistentry>
733
734 <varlistentry id="last">
735 <term><command>last</command></term>
736 <listitem>
737 <para>Shows which users last logged in (and out), searching back
738 through the <filename>/var/log/wtmp</filename> file; it also shows
739 system boots, shutdowns, and run-level changes</para>
740 <indexterm zone="ch-system-util-linux last">
741 <primary sortas="b-last">last</primary>
742 </indexterm>
743 </listitem>
744 </varlistentry>
745
746 <varlistentry id="lastb">
747 <term><command>lastb</command></term>
748 <listitem>
749 <para>Shows the failed login attempts, as logged in
750 <filename>/var/log/btmp</filename></para>
751 <indexterm zone="ch-system-util-linux lastb">
752 <primary sortas="b-lastb">lastb</primary>
753 </indexterm>
754 </listitem>
755 </varlistentry>
756
757 <varlistentry id="ldattach">
758 <term><command>ldattach</command></term>
759 <listitem>
760 <para>Attaches a line discipline to a serial line</para>
761 <indexterm zone="ch-system-util-linux ldattach">
762 <primary sortas="b-ldattach">ldattach</primary>
763 </indexterm>
764 </listitem>
765 </varlistentry>
766
767 <varlistentry id="linux32">
768 <term><command>linux32</command></term>
769 <listitem>
770 <para>A symbolic link to setarch</para>
771 <indexterm zone="ch-system-util-linux linux32">
772 <primary sortas="b-linux32">linux32</primary>
773 </indexterm>
774 </listitem>
775 </varlistentry>
776
777 <varlistentry id="linux64">
778 <term><command>linux64</command></term>
779 <listitem>
780 <para>A symbolic link to setarch</para>
781 <indexterm zone="ch-system-util-linux linux64">
782 <primary sortas="b-linux64">linux64</primary>
783 </indexterm>
784 </listitem>
785 </varlistentry>
786
787 <varlistentry id="logger">
788 <term><command>logger</command></term>
789 <listitem>
790 <para>Enters the given message into the system log</para>
791 <indexterm zone="ch-system-util-linux logger">
792 <primary sortas="b-logger">logger</primary>
793 </indexterm>
794 </listitem>
795 </varlistentry>
796
797 <varlistentry id="look">
798 <term><command>look</command></term>
799 <listitem>
800 <para>Displays lines that begin with the given string</para>
801 <indexterm zone="ch-system-util-linux look">
802 <primary sortas="b-look">look</primary>
803 </indexterm>
804 </listitem>
805 </varlistentry>
806
807 <varlistentry id="losetup">
808 <term><command>losetup</command></term>
809 <listitem>
810 <para>Sets up and controls loop devices</para>
811 <indexterm zone="ch-system-util-linux losetup">
812 <primary sortas="b-losetup">losetup</primary>
813 </indexterm>
814 </listitem>
815 </varlistentry>
816
817 <varlistentry id="lsblk">
818 <term><command>lsblk</command></term>
819 <listitem>
820 <para>Lists information about all or selected block devices in
821 a tree-like format</para>
822 <indexterm zone="ch-system-util-linux lsblk">
823 <primary sortas="b-lsblk">lsblk</primary>
824 </indexterm>
825 </listitem>
826 </varlistentry>
827
828 <varlistentry id="lscpu">
829 <term><command>lscpu</command></term>
830 <listitem>
831 <para>Prints CPU architecture information</para>
832 <indexterm zone="ch-system-util-linux lscpu">
833 <primary sortas="b-lscpu">lscpu</primary>
834 </indexterm>
835 </listitem>
836 </varlistentry>
837
838 <varlistentry id="lsfd">
839 <term><command>lsfd</command></term>
840 <listitem>
841 <para>Displays information about open files; replaces <command>lsof</command></para>
842 <indexterm zone="ch-system-util-linux lsfd">
843 <primary sortas="b-lsfd">lsfd</primary>
844 </indexterm>
845 </listitem>
846 </varlistentry>
847
848 <varlistentry id="lsipc">
849 <term><command>lsipc</command></term>
850 <listitem>
851 <para>Prints information on IPC facilities currently employed
852 in the system</para>
853 <indexterm zone="ch-system-util-linux lsipc">
854 <primary sortas="b-lsipc">lsipc</primary>
855 </indexterm>
856 </listitem>
857 </varlistentry>
858
859 <varlistentry id="lsirq">
860 <term><command>lsirq</command></term>
861 <listitem>
862 <para>Displays kernel interrupt counter information</para>
863 <indexterm zone="ch-system-util-linux lsirq">
864 <primary sortas="b-lsirq">lsirq</primary>
865 </indexterm>
866 </listitem>
867 </varlistentry>
868
869 <varlistentry id="lslocks">
870 <term><command>lslocks</command></term>
871 <listitem>
872 <para>Lists local system locks</para>
873 <indexterm zone="ch-system-util-linux lslocks">
874 <primary sortas="b-lslocks">lslocks</primary>
875 </indexterm>
876 </listitem>
877 </varlistentry>
878
879 <varlistentry id="lslogins">
880 <term><command>lslogins</command></term>
881 <listitem>
882 <para>Lists information about users, groups and system accounts</para>
883 <indexterm zone="ch-system-util-linux lslogins">
884 <primary sortas="b-lslogins">lslogins</primary>
885 </indexterm>
886 </listitem>
887 </varlistentry>
888
889 <varlistentry id="lsmem">
890 <term><command>lsmem</command></term>
891 <listitem>
892 <para>Lists the ranges of available memory with their online
893 status</para>
894 <indexterm zone="ch-system-util-linux lsmem">
895 <primary sortas="b-lsmem">lsmem</primary>
896 </indexterm>
897 </listitem>
898 </varlistentry>
899
900 <varlistentry id="lsns">
901 <term><command>lsns</command></term>
902 <listitem>
903 <para>Lists namespaces</para>
904 <indexterm zone="ch-system-util-linux lsns">
905 <primary sortas="b-lsns">lsns</primary>
906 </indexterm>
907 </listitem>
908 </varlistentry>
909
910 <varlistentry id="mcookie">
911 <term><command>mcookie</command></term>
912 <listitem>
913 <para>Generates magic cookies (128-bit random hexadecimal numbers) for
914 <command>xauth</command></para>
915 <indexterm zone="ch-system-util-linux mcookie">
916 <primary sortas="b-mcookie">mcookie</primary>
917 </indexterm>
918 </listitem>
919 </varlistentry>
920
921 <varlistentry id="mesg">
922 <term><command>mesg</command></term>
923 <listitem>
924 <para>Controls whether other users can send messages to the current
925 user's terminal</para>
926 <indexterm zone="ch-system-util-linux mesg">
927 <primary sortas="b-mesg">mesg</primary>
928 </indexterm>
929 </listitem>
930 </varlistentry>
931
932 <varlistentry id="mkfs">
933 <term><command>mkfs</command></term>
934 <listitem>
935 <para>Builds a file system on a device (usually a hard disk
936 partition)</para>
937 <indexterm zone="ch-system-util-linux mkfs">
938 <primary sortas="b-mkfs">mkfs</primary>
939 </indexterm>
940 </listitem>
941 </varlistentry>
942
943 <varlistentry id="mkfs.bfs">
944 <term><command>mkfs.bfs</command></term>
945 <listitem>
946 <para>Creates a Santa Cruz Operations (SCO) bfs file system</para>
947 <indexterm zone="ch-system-util-linux mkfs.bfs">
948 <primary sortas="b-mkfs.bfs">mkfs.bfs</primary>
949 </indexterm>
950 </listitem>
951 </varlistentry>
952
953 <varlistentry id="mkfs.cramfs">
954 <term><command>mkfs.cramfs</command></term>
955 <listitem>
956 <para>Creates a cramfs file system</para>
957 <indexterm zone="ch-system-util-linux mkfs.cramfs">
958 <primary sortas="b-mkfs.cramfs">mkfs.cramfs</primary>
959 </indexterm>
960 </listitem>
961 </varlistentry>
962
963 <varlistentry id="mkfs.minix">
964 <term><command>mkfs.minix</command></term>
965 <listitem>
966 <para>Creates a Minix file system</para>
967 <indexterm zone="ch-system-util-linux mkfs.minix">
968 <primary sortas="b-mkfs.minix">mkfs.minix</primary>
969 </indexterm>
970 </listitem>
971 </varlistentry>
972
973 <varlistentry id="mkswap">
974 <term><command>mkswap</command></term>
975 <listitem>
976 <para>Initializes the given device or file to be used as a swap
977 area</para>
978 <indexterm zone="ch-system-util-linux mkswap">
979 <primary sortas="b-mkswap">mkswap</primary>
980 </indexterm>
981 </listitem>
982 </varlistentry>
983
984 <varlistentry id="more">
985 <term><command>more</command></term>
986 <listitem>
987 <para>A filter for paging through text one screen at a time</para>
988 <indexterm zone="ch-system-util-linux more">
989 <primary sortas="b-more">more</primary>
990 </indexterm>
991 </listitem>
992 </varlistentry>
993
994 <varlistentry id="mount">
995 <term><command>mount</command></term>
996 <listitem>
997 <para>Attaches the file system on the given device to a specified
998 directory in the file-system tree</para>
999 <indexterm zone="ch-system-util-linux mount">
1000 <primary sortas="b-mount">mount</primary>
1001 </indexterm>
1002 </listitem>
1003 </varlistentry>
1004
1005 <varlistentry id="mountpoint">
1006 <term><command>mountpoint</command></term>
1007 <listitem>
1008 <para>Checks if the directory is a mountpoint</para>
1009 <indexterm zone="ch-system-util-linux mountpoint">
1010 <primary sortas="b-mountpoint">mountpoint</primary>
1011 </indexterm>
1012 </listitem>
1013 </varlistentry>
1014
1015 <varlistentry id="namei">
1016 <term><command>namei</command></term>
1017 <listitem>
1018 <para>Shows the symbolic links in the given paths</para>
1019 <indexterm zone="ch-system-util-linux namei">
1020 <primary sortas="b-namei">namei</primary>
1021 </indexterm>
1022 </listitem>
1023 </varlistentry>
1024
1025 <varlistentry id="nsenter">
1026 <term><command>nsenter</command></term>
1027 <listitem>
1028 <para>Runs a program with namespaces of other processes</para>
1029 <indexterm zone="ch-system-util-linux nsenter">
1030 <primary sortas="b-nsenter">nsenter</primary>
1031 </indexterm>
1032 </listitem>
1033 </varlistentry>
1034
1035 <varlistentry id="partx">
1036 <term><command>partx</command></term>
1037 <listitem>
1038 <para>Tells the kernel about the presence and numbering of on-disk
1039 partitions</para>
1040 <indexterm zone="ch-system-util-linux partx">
1041 <primary sortas="b-partx">partx</primary>
1042 </indexterm>
1043 </listitem>
1044 </varlistentry>
1045
1046 <varlistentry id="pivot_root">
1047 <term><command>pivot_root</command></term>
1048 <listitem>
1049 <para>Makes the given file system the new root file system of the
1050 current process</para>
1051 <indexterm zone="ch-system-util-linux pivot_root">
1052 <primary sortas="b-pivot_root">pivot_root</primary>
1053 </indexterm>
1054 </listitem>
1055 </varlistentry>
1056
1057 <varlistentry id="prlimit">
1058 <term><command>prlimit</command></term>
1059 <listitem>
1060 <para>Gets and sets a process's resource limits</para>
1061 <indexterm zone="ch-system-util-linux prlimit">
1062 <primary sortas="b-prlimit">prlimit</primary>
1063 </indexterm>
1064 </listitem>
1065 </varlistentry>
1066
1067 <varlistentry id="readprofile">
1068 <term><command>readprofile</command></term>
1069 <listitem>
1070 <para>Reads kernel profiling information</para>
1071 <indexterm zone="ch-system-util-linux readprofile">
1072 <primary sortas="b-readprofile">readprofile</primary>
1073 </indexterm>
1074 </listitem>
1075 </varlistentry>
1076
1077 <varlistentry id="rename">
1078 <term><command>rename</command></term>
1079 <listitem>
1080 <para>Renames the given files, replacing a given string with
1081 another</para>
1082 <indexterm zone="ch-system-util-linux rename">
1083 <primary sortas="b-rename">rename</primary>
1084 </indexterm>
1085 </listitem>
1086 </varlistentry>
1087
1088 <varlistentry id="renice">
1089 <term><command>renice</command></term>
1090 <listitem>
1091 <para>Alters the priority of running processes</para>
1092 <indexterm zone="ch-system-util-linux renice">
1093 <primary sortas="b-renice">renice</primary>
1094 </indexterm>
1095 </listitem>
1096 </varlistentry>
1097
1098 <varlistentry id="resizepart">
1099 <term><command>resizepart</command></term>
1100 <listitem>
1101 <para>Asks the Linux kernel to resize a partition</para>
1102 <indexterm zone="ch-system-util-linux resizepart">
1103 <primary sortas="b-resizepart">resizepart</primary>
1104 </indexterm>
1105 </listitem>
1106 </varlistentry>
1107
1108 <varlistentry id="rev">
1109 <term><command>rev</command></term>
1110 <listitem>
1111 <para>Reverses the lines of a given file</para>
1112 <indexterm zone="ch-system-util-linux rev">
1113 <primary sortas="b-rev">rev</primary>
1114 </indexterm>
1115 </listitem>
1116 </varlistentry>
1117
1118 <varlistentry id="rkfill">
1119 <term><command>rkfill</command></term>
1120 <listitem>
1121 <para>Tool for enabling and disabling wireless devices</para>
1122 <indexterm zone="ch-system-util-linux rkfill">
1123 <primary sortas="b-rkfill">rkfill</primary>
1124 </indexterm>
1125 </listitem>
1126 </varlistentry>
1127
1128 <varlistentry id="rtcwake">
1129 <term><command>rtcwake</command></term>
1130 <listitem>
1131 <para>Used to enter a system sleep state until the specified wakeup
1132 time</para>
1133 <indexterm zone="ch-system-util-linux rtcwake">
1134 <primary sortas="b-rtcwake">rtcwake</primary>
1135 </indexterm>
1136 </listitem>
1137 </varlistentry>
1138
1139 <varlistentry id="script">
1140 <term><command>script</command></term>
1141 <listitem>
1142 <para>Makes a typescript of a terminal session</para>
1143 <indexterm zone="ch-system-util-linux script">
1144 <primary sortas="b-script">script</primary>
1145 </indexterm>
1146 </listitem>
1147 </varlistentry>
1148
1149 <varlistentry id="scriptlive">
1150 <term><command>scriptlive</command></term>
1151 <listitem>
1152 <para>Re-runs session typescripts using timing information</para>
1153 <indexterm zone="ch-system-util-linux scriptlive">
1154 <primary sortas="b-scriptlive">scriptlive</primary>
1155 </indexterm>
1156 </listitem>
1157 </varlistentry>
1158
1159 <varlistentry id="scriptreplay">
1160 <term><command>scriptreplay</command></term>
1161 <listitem>
1162 <para>Plays back typescripts using timing information</para>
1163 <indexterm zone="ch-system-util-linux scriptreplay">
1164 <primary sortas="b-scriptreplay">scriptreplay</primary>
1165 </indexterm>
1166 </listitem>
1167 </varlistentry>
1168
1169 <varlistentry id="setarch">
1170 <term><command>setarch</command></term>
1171 <listitem>
1172 <para>Changes reported architecture in a new program environment, and
1173 sets personality flags</para>
1174 <indexterm zone="ch-system-util-linux setarch">
1175 <primary sortas="b-setarch">setarch</primary>
1176 </indexterm>
1177 </listitem>
1178 </varlistentry>
1179
1180 <varlistentry id="setsid">
1181 <term><command>setsid</command></term>
1182 <listitem>
1183 <para>Runs the given program in a new session</para>
1184 <indexterm zone="ch-system-util-linux setsid">
1185 <primary sortas="b-setsid">setsid</primary>
1186 </indexterm>
1187 </listitem>
1188 </varlistentry>
1189
1190 <varlistentry id="setterm">
1191 <term><command>setterm</command></term>
1192 <listitem>
1193 <para>Sets terminal attributes</para>
1194 <indexterm zone="ch-system-util-linux setterm">
1195 <primary sortas="b-setterm">setterm</primary>
1196 </indexterm>
1197 </listitem>
1198 </varlistentry>
1199
1200 <varlistentry id="sfdisk">
1201 <term><command>sfdisk</command></term>
1202 <listitem>
1203 <para>A disk partition table manipulator</para>
1204 <indexterm zone="ch-system-util-linux sfdisk">
1205 <primary sortas="b-sfdisk">sfdisk</primary>
1206 </indexterm>
1207 </listitem>
1208 </varlistentry>
1209
1210 <varlistentry id="sulogin">
1211 <term><command>sulogin</command></term>
1212 <listitem>
1213 <para>Allows <systemitem class="username">root</systemitem> to log in;
1214 it is normally invoked by <command>init</command> when the system goes
1215 into single user mode</para>
1216 <indexterm zone="ch-system-util-linux sulogin">
1217 <primary sortas="b-sulogin">sulogin</primary>
1218 </indexterm>
1219 </listitem>
1220 </varlistentry>
1221
1222 <varlistentry id="swaplabel">
1223 <term><command>swaplabel</command></term>
1224 <listitem>
1225 <para>Makes changes to the swap area's UUID and label</para>
1226 <indexterm zone="ch-system-util-linux swaplabel">
1227 <primary sortas="b-swaplabel">swaplabel</primary>
1228 </indexterm>
1229 </listitem>
1230 </varlistentry>
1231
1232 <varlistentry id="swapoff">
1233 <term><command>swapoff</command></term>
1234 <listitem>
1235 <para>Disables devices and files for paging and swapping</para>
1236 <indexterm zone="ch-system-util-linux swapoff">
1237 <primary sortas="b-swapoff">swapoff</primary>
1238 </indexterm>
1239 </listitem>
1240 </varlistentry>
1241
1242 <varlistentry id="swapon">
1243 <term><command>swapon</command></term>
1244 <listitem>
1245 <para>Enables devices and files for paging and swapping, and
1246 lists the devices and files currently in use</para>
1247 <indexterm zone="ch-system-util-linux swapon">
1248 <primary sortas="b-swapon">swapon</primary>
1249 </indexterm>
1250 </listitem>
1251 </varlistentry>
1252
1253 <varlistentry id="switch_root">
1254 <term><command>switch_root</command></term>
1255 <listitem>
1256 <para>Switches to another filesystem as the root of the mount tree</para>
1257 <indexterm zone="ch-system-util-linux switch_root">
1258 <primary sortas="b-switch_root">switch_root</primary>
1259 </indexterm>
1260 </listitem>
1261 </varlistentry>
1262
1263 <varlistentry id="taskset">
1264 <term><command>taskset</command></term>
1265 <listitem>
1266 <para>Retrieves or sets a process's CPU affinity</para>
1267 <indexterm zone="ch-system-util-linux taskset">
1268 <primary sortas="b-taskset">taskset</primary>
1269 </indexterm>
1270 </listitem>
1271 </varlistentry>
1272
1273 <varlistentry id="uclampset">
1274 <term><command>uclampset</command></term>
1275 <listitem>
1276 <para>Manipulates the utilization clamping attributes of the
1277 system or a process</para>
1278 <indexterm zone="ch-system-util-linux uclampset">
1279 <primary sortas="b-uclampset">uclampset</primary>
1280 </indexterm>
1281 </listitem>
1282 </varlistentry>
1283
1284 <varlistentry id="ul">
1285 <term><command>ul</command></term>
1286 <listitem>
1287 <para>A filter for translating underscores into escape sequences
1288 indicating underlining for the terminal in use</para>
1289 <indexterm zone="ch-system-util-linux ul">
1290 <primary sortas="b-ul">ul</primary>
1291 </indexterm>
1292 </listitem>
1293 </varlistentry>
1294
1295 <varlistentry id="umount">
1296 <term><command>umount</command></term>
1297 <listitem>
1298 <para>Disconnects a file system from the system's file tree</para>
1299 <indexterm zone="ch-system-util-linux umount">
1300 <primary sortas="b-umount">umount</primary>
1301 </indexterm>
1302 </listitem>
1303 </varlistentry>
1304
1305 <varlistentry id="uname26">
1306 <term><command>uname26</command></term>
1307 <listitem>
1308 <para>A symbolic link to setarch</para>
1309 <indexterm zone="ch-system-util-linux uname26">
1310 <primary sortas="b-uname26">uname26</primary>
1311 </indexterm>
1312 </listitem>
1313 </varlistentry>
1314
1315 <varlistentry id="unshare">
1316 <term><command>unshare</command></term>
1317 <listitem>
1318 <para>Runs a program with some namespaces unshared from parent</para>
1319 <indexterm zone="ch-system-util-linux unshare">
1320 <primary sortas="b-unshare">unshare</primary>
1321 </indexterm>
1322 </listitem>
1323 </varlistentry>
1324
1325 <varlistentry id="utmpdump">
1326 <term><command>utmpdump</command></term>
1327 <listitem>
1328 <para>Displays the content of the given login file in a
1329 user-friendly format</para>
1330 <indexterm zone="ch-system-util-linux utmpdump">
1331 <primary sortas="b-utmpdump">utmpdump</primary>
1332 </indexterm>
1333 </listitem>
1334 </varlistentry>
1335
1336 <varlistentry id="uuidd">
1337 <term><command>uuidd</command></term>
1338 <listitem>
1339 <para>A daemon used by the UUID library to generate time-based
1340 UUIDs in a secure and guaranteed-unique fashion</para>
1341 <indexterm zone="ch-system-util-linux uuidd">
1342 <primary sortas="b-uuidd">uuidd</primary>
1343 </indexterm>
1344 </listitem>
1345 </varlistentry>
1346
1347 <varlistentry id="uuidgen">
1348 <term><command>uuidgen</command></term>
1349 <listitem>
1350 <para>Creates new UUIDs. Each new UUID is a random number likely to be
1351 unique among all UUIDs created, on the local system and on other
1352 systems, in the past and in the future, with extremely high
1353 probability (~340 trillion trillion trillion unique UUIDs are possible)</para>
1354 <indexterm zone="ch-system-util-linux uuidgen">
1355 <primary sortas="b-uuidgen">uuidgen</primary>
1356 </indexterm>
1357 </listitem>
1358 </varlistentry>
1359
1360 <varlistentry id="uuidparse">
1361 <term><command>uuidparse</command></term>
1362 <listitem>
1363 <para>A utility to parse unique identifiers</para>
1364 <indexterm zone="ch-system-util-linux uuidparse">
1365 <primary sortas="b-uuidparse">uuidparse</primary>
1366 </indexterm>
1367 </listitem>
1368 </varlistentry>
1369
1370 <varlistentry id="wall">
1371 <term><command>wall</command></term>
1372 <listitem>
1373 <para>Displays the contents of a file or, by default, its standard
1374 input, on the terminals of all currently logged in users</para>
1375 <indexterm zone="ch-system-util-linux wall">
1376 <primary sortas="b-wall">wall</primary>
1377 </indexterm>
1378 </listitem>
1379 </varlistentry>
1380
1381 <varlistentry id="wdctl">
1382 <term><command>wdctl</command></term>
1383 <listitem>
1384 <para>Shows hardware watchdog status</para>
1385 <indexterm zone="ch-system-util-linux wdctl">
1386 <primary sortas="b-wdctl">wdctl</primary>
1387 </indexterm>
1388 </listitem>
1389 </varlistentry>
1390
1391 <varlistentry id="whereis">
1392 <term><command>whereis</command></term>
1393 <listitem>
1394 <para>Reports the location of the binary, source, and man page
1395 files for the given command</para>
1396 <indexterm zone="ch-system-util-linux whereis">
1397 <primary sortas="b-whereis">whereis</primary>
1398 </indexterm>
1399 </listitem>
1400 </varlistentry>
1401
1402 <varlistentry id="wipefs">
1403 <term><command>wipefs</command></term>
1404 <listitem>
1405 <para>Wipes a filesystem signature from a device</para>
1406 <indexterm zone="ch-system-util-linux wipefs">
1407 <primary sortas="b-wipefs">wipefs</primary>
1408 </indexterm>
1409 </listitem>
1410 </varlistentry>
1411
1412 <varlistentry id="x86_64">
1413 <term><command>x86_64</command></term>
1414 <listitem>
1415 <para>A symbolic link to setarch</para>
1416 <indexterm zone="ch-system-util-linux x86_64">
1417 <primary sortas="b-x86_64">x86_64</primary>
1418 </indexterm>
1419 </listitem>
1420 </varlistentry>
1421
1422 <varlistentry id="zramctl">
1423 <term><command>zramctl</command></term>
1424 <listitem>
1425 <para>A program to set up and control zram (compressed ram disk)
1426 devices</para>
1427 <indexterm zone="ch-system-util-linux zramctl">
1428 <primary sortas="b-zramctl">zramctl</primary>
1429 </indexterm>
1430 </listitem>
1431 </varlistentry>
1432
1433 <varlistentry id="libblkid">
1434 <term><filename class="libraryfile">libblkid</filename></term>
1435 <listitem>
1436 <para>Contains routines for device identification and token
1437 extraction</para>
1438 <indexterm zone="ch-system-util-linux libblkid">
1439 <primary sortas="c-libblkid">libblkid</primary>
1440 </indexterm>
1441 </listitem>
1442 </varlistentry>
1443
1444 <varlistentry id="libfdisk">
1445 <term><filename class="libraryfile">libfdisk</filename></term>
1446 <listitem>
1447 <para>Contains routines for manipulating partition tables</para>
1448 <indexterm zone="ch-system-util-linux libfdisk">
1449 <primary sortas="c-libfdisk">libfdisk</primary>
1450 </indexterm>
1451 </listitem>
1452 </varlistentry>
1453
1454 <varlistentry id="libmount">
1455 <term><filename class="libraryfile">libmount</filename></term>
1456 <listitem>
1457 <para>Contains routines for block device mounting and
1458 unmounting</para>
1459 <indexterm zone="ch-system-util-linux libmount">
1460 <primary sortas="c-libmount">libmount</primary>
1461 </indexterm>
1462 </listitem>
1463 </varlistentry>
1464
1465 <varlistentry id="libsmartcols">
1466 <term><filename class="libraryfile">libsmartcols</filename></term>
1467 <listitem>
1468 <para>Contains routines for aiding screen output in tabular form</para>
1469 <indexterm zone="ch-system-util-linux libsmartcols">
1470 <primary sortas="c-libsmartcols">libsmartcols</primary>
1471 </indexterm>
1472 </listitem>
1473 </varlistentry>
1474
1475 <varlistentry id="libuuid">
1476 <term><filename class="libraryfile">libuuid</filename></term>
1477 <listitem>
1478 <para>Contains routines for generating unique identifiers for objects
1479 that may be accessible beyond the local system</para>
1480 <indexterm zone="ch-system-util-linux libuuid">
1481 <primary sortas="c-libuuid">libuuid</primary>
1482 </indexterm>
1483 </listitem>
1484 </varlistentry>
1485
1486 </variablelist>
1487
1488 </sect2>
1489
1490</sect1>
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