source: chapter06/util-linux-ng.xml@ 6033f00

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Last change on this file since 6033f00 was 3dbfa9a, checked in by Matthew Burgess <matthew@…>, 15 years ago

Correct typos in some Util-Linux-NG command descriptions, that attributed them to the E2fsprogs package. Thanks to Jean-Phillipe Mengual for the report.

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@8972 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

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File size: 33.2 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-ng" role="wrap">
9 <?dbhtml filename="util-linux-ng.html"?>
10
11 <sect1info condition="script">
12 <productname>util-linux-ng</productname>
13 <productnumber>&util-linux-ng-version;</productnumber>
14 <address>&util-linux-ng-url;</address>
15 </sect1info>
16
17 <title>Util-linux-ng-&util-linux-ng-version;</title>
18
19 <indexterm zone="ch-system-util-linux-ng">
20 <primary sortas="a-Util-linux-ng">Util-linux-ng</primary>
21 </indexterm>
22
23 <sect2 role="package">
24 <title/>
25
26 <para>The Util-linux-ng 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-ng-ch6-sbu;</seg>
36 <seg>&util-linux-ng-ch6-du;</seg>
37 </seglistitem>
38 </segmentedlist>
39
40 </sect2>
41
42 <sect2 role="installation">
43 <title>FHS compliance notes</title>
44
45 <para>The FHS recommends using the <filename
46 class="directory">/var/lib/hwclock</filename> directory instead of the
47 usual <filename class="directory">/etc</filename> directory as the
48 location for the <filename>adjtime</filename> file. To make the
49 <command>hwclock</command> program FHS-compliant, run the
50 following:</para>
51
52<screen><userinput remap="pre">sed -e 's@etc/adjtime@var/lib/hwclock/adjtime@g' \
53 -i $(grep -rl '/etc/adjtime' .)
54mkdir -pv /var/lib/hwclock</userinput></screen>
55
56 </sect2>
57
58 <sect2 role="installation">
59 <title>Installation of Util-linux-ng</title>
60
61<screen><userinput remap="configure">./configure --enable-arch --enable-partx --enable-write</userinput></screen>
62
63 <variablelist>
64 <title>The meaning of the configure options:</title>
65
66 <varlistentry>
67 <term><parameter>--enable-arch</parameter></term>
68 <listitem>
69 <para>Enables building the <command>arch</command> program</para>
70 </listitem>
71 </varlistentry>
72 <varlistentry>
73 <term><parameter>--enable-partx</parameter></term>
74 <listitem>
75 <para>Enables building the <command>addpart</command>,
76 <command>delpart</command> and <command>partx</command>
77 programs</para>
78 </listitem>
79 </varlistentry>
80 <varlistentry>
81 <term><parameter>--enable-write</parameter></term>
82 <listitem>
83 <para>Enables building the <command>write</command> program</para>
84 </listitem>
85 </varlistentry>
86
87 </variablelist>
88
89 <para>Compile the package:</para>
90
91<screen><userinput remap="make">make</userinput></screen>
92
93 <para>This package does not come with a test suite.</para>
94
95 <para>Install the package:</para>
96
97<screen><userinput remap="install">make install</userinput></screen>
98
99 </sect2>
100
101 <sect2 id="contents-utillinux" role="content">
102 <title>Contents of Util-linux-ng</title>
103
104 <segmentedlist>
105 <segtitle>Installed programs</segtitle>
106 <segtitle>Installed libraries</segtitle>
107
108 <seglistitem>
109 <seg>addpart, agetty, arch, blkid, blockdev, cal, cfdisk, chkdupexe,
110 chrt, col, colcrt, colrm, column, ctrlaltdel, cytune, ddate, delpart,
111 dmesg, fdformat, fdisk, findfs, flock, fsck, fsck.cramfs, fsck.minix,
112 getopt, hexdump, hwclock, i386, ionice, ipcmk, ipcrm, ipcs, isosize,
113 ldattach, line, linux32, linux64, logger, look, losetup, lscpu,
114 mcookie, mkfs, mkfs.bfs, mkfs.cramfs, mkfs.minix, mkswap, more, mount,
115 namei, partx, pg, pivot_root, readprofile, rename, renice, rev,
116 rtcwake, script, scriptreplay, setarch, setsid, setterm, sfdisk,
117 swapoff (link to swapon), swapon, switch_root, tailf, taskset, tunelp,
118 ul, umount, uuidd, uuidgen, wall, whereis, and write</seg>
119 <seg>libblkid.{a,so}, libuuid.{a,so}</seg>
120 </seglistitem>
121 </segmentedlist>
122
123 <variablelist>
124 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
125 <?dbfo list-presentation="list"?>
126 <?dbhtml list-presentation="table"?>
127
128 <varlistentry id="addpart">
129 <term><command>addpart</command></term>
130 <listitem>
131 <para>Informs the Linux kernel of new partitions</para>
132 <indexterm zone="ch-system-util-linux-ng addpart">
133 <primary sortas="b-addpart">addpart</primary>
134 </indexterm>
135 </listitem>
136 </varlistentry>
137
138 <varlistentry id="agetty">
139 <term><command>agetty</command></term>
140 <listitem>
141 <para>Opens a tty port, prompts for a login name,
142 and then invokes the <command>login</command> program</para>
143 <indexterm zone="ch-system-util-linux-ng agetty">
144 <primary sortas="b-agetty">agetty</primary>
145 </indexterm>
146 </listitem>
147 </varlistentry>
148
149 <varlistentry id="arch">
150 <term><command>arch</command></term>
151 <listitem>
152 <para>Reports the machine's architecture</para>
153 <indexterm zone="ch-system-util-linux-ng arch">
154 <primary sortas="b-arch">arch</primary>
155 </indexterm>
156 </listitem>
157 </varlistentry>
158
159 <varlistentry id="blkid">
160 <term><command>blkid</command></term>
161 <listitem>
162 <para>A command line utility to locate and print block device
163 attributes</para>
164 <indexterm zone="ch-system-util-linux-ng blkid">
165 <primary sortas="b-blkid">blkid</primary>
166 </indexterm>
167 </listitem>
168 </varlistentry>
169
170 <varlistentry id="blockdev">
171 <term><command>blockdev</command></term>
172 <listitem>
173 <para>Allows users to call block device ioctls from the command
174 line</para>
175 <indexterm zone="ch-system-util-linux-ng blockdev">
176 <primary sortas="b-blockdev">blockdev</primary>
177 </indexterm>
178 </listitem>
179 </varlistentry>
180
181 <varlistentry id="cal">
182 <term><command>cal</command></term>
183 <listitem>
184 <para>Displays a simple calendar</para>
185 <indexterm zone="ch-system-util-linux-ng cal">
186 <primary sortas="b-cal">cal</primary>
187 </indexterm>
188 </listitem>
189 </varlistentry>
190
191 <varlistentry id="cfdisk">
192 <term><command>cfdisk</command></term>
193 <listitem>
194 <para>Manipulates the partition table of the given device</para>
195 <indexterm zone="ch-system-util-linux-ng cfdisk">
196 <primary sortas="b-cfdisk">cfdisk</primary>
197 </indexterm>
198 </listitem>
199 </varlistentry>
200
201 <varlistentry id="chkdupexe">
202 <term><command>chkdupexe</command></term>
203 <listitem>
204 <para>Finds duplicate executables</para>
205 <indexterm zone="ch-system-util-linux-ng chkdupexe">
206 <primary sortas="b-chkdupexe">chkdupexe</primary>
207 </indexterm>
208 </listitem>
209 </varlistentry>
210
211 <varlistentry id="chrt">
212 <term><command>chrt</command></term>
213 <listitem>
214 <para>Manipulates real-time attributes of a process</para>
215 <indexterm zone="ch-system-util-linux-ng chrt">
216 <primary sortas="b-chrt">chrt</primary>
217 </indexterm>
218 </listitem>
219 </varlistentry>
220
221 <varlistentry id="col">
222 <term><command>col</command></term>
223 <listitem>
224 <para>Filters out reverse line feeds</para>
225 <indexterm zone="ch-system-util-linux-ng col">
226 <primary sortas="b-col">col</primary>
227 </indexterm>
228 </listitem>
229 </varlistentry>
230
231 <varlistentry id="colcrt">
232 <term><command>colcrt</command></term>
233 <listitem>
234 <para>Filters <command>nroff</command> output for terminals
235 that lack some capabilities, such as overstriking and half-lines</para>
236 <indexterm zone="ch-system-util-linux-ng colcrt">
237 <primary sortas="b-colcrt">colcrt</primary>
238 </indexterm>
239 </listitem>
240 </varlistentry>
241
242 <varlistentry id="colrm">
243 <term><command>colrm</command></term>
244 <listitem>
245 <para>Filters out the given columns</para>
246 <indexterm zone="ch-system-util-linux-ng colrm">
247 <primary sortas="b-colrm">colrm</primary>
248 </indexterm>
249 </listitem>
250 </varlistentry>
251
252 <varlistentry id="column">
253 <term><command>column</command></term>
254 <listitem>
255 <para>Formats a given file into multiple columns</para>
256 <indexterm zone="ch-system-util-linux-ng column">
257 <primary sortas="b-column">column</primary>
258 </indexterm>
259 </listitem>
260 </varlistentry>
261
262 <varlistentry id="ctrlaltdel">
263 <term><command>ctrlaltdel</command></term>
264 <listitem>
265 <para>Sets the function of the Ctrl+Alt+Del key combination to a
266 hard or a soft reset</para>
267 <indexterm zone="ch-system-util-linux-ng ctrlaltdel">
268 <primary sortas="b-ctrlaltdel">ctrlaltdel</primary>
269 </indexterm>
270 </listitem>
271 </varlistentry>
272
273 <varlistentry id="cytune">
274 <term><command>cytune</command></term>
275 <listitem>
276 <para>Tunes the parameters of the serial line drivers for
277 Cyclades cards</para>
278 <indexterm zone="ch-system-util-linux-ng cytune">
279 <primary sortas="b-cytune">cytune</primary>
280 </indexterm>
281 </listitem>
282 </varlistentry>
283
284 <varlistentry id="ddate">
285 <term><command>ddate</command></term>
286 <listitem>
287 <para>Gives the Discordian date or converts the given Gregorian date
288 to a Discordian one</para>
289 <indexterm zone="ch-system-util-linux-ng ddate">
290 <primary sortas="b-ddate">ddate</primary>
291 </indexterm>
292 </listitem>
293 </varlistentry>
294
295 <varlistentry id="delpart">
296 <term><command>delpart</command></term>
297 <listitem>
298 <para>Asks the Linux kernel to remove a partition</para>
299 <indexterm zone="ch-system-util-linux-ng delpart">
300 <primary sortas="b-delpart">delpart</primary>
301 </indexterm>
302 </listitem>
303 </varlistentry>
304
305 <varlistentry id="dmesg">
306 <term><command>dmesg</command></term>
307 <listitem>
308 <para>Dumps the kernel boot messages</para>
309 <indexterm zone="ch-system-util-linux-ng dmesg">
310 <primary sortas="b-dmesg">dmesg</primary>
311 </indexterm>
312 </listitem>
313 </varlistentry>
314
315 <varlistentry id="fdformat">
316 <term><command>fdformat</command></term>
317 <listitem>
318 <para>Low-level formats a floppy disk</para>
319 <indexterm zone="ch-system-util-linux-ng fdformat">
320 <primary sortas="b-fdformat">fdformat</primary>
321 </indexterm>
322 </listitem>
323 </varlistentry>
324
325 <varlistentry id="fdisk">
326 <term><command>fdisk</command></term>
327 <listitem>
328 <para>Manipulates the paritition table of the given device</para>
329 <indexterm zone="ch-system-util-linux-ng fdisk">
330 <primary sortas="b-fdisk">fdisk</primary>
331 </indexterm>
332 </listitem>
333 </varlistentry>
334
335 <varlistentry id="findfs">
336 <term><command>findfs</command></term>
337 <listitem>
338 <para>Finds a file system by label or Universally Unique Identifier
339 (UUID)</para>
340 <indexterm zone="ch-system-util-linux-ng findfs">
341 <primary sortas="b-findfs">findfs</primary>
342 </indexterm>
343 </listitem>
344 </varlistentry>
345
346 <varlistentry id="flock">
347 <term><command>flock</command></term>
348 <listitem>
349 <para>Acquires a file lock and then executes a command with the lock
350 held</para>
351 <indexterm zone="ch-system-util-linux-ng flock">
352 <primary sortas="b-flock">flock</primary>
353 </indexterm>
354 </listitem>
355 </varlistentry>
356
357 <varlistentry id="fsck">
358 <term><command>fsck</command></term>
359 <listitem>
360 <para>Is used to check, and optionally repair, file systems</para>
361 <indexterm zone="ch-system-util-linux-ng fsck">
362 <primary sortas="b-fsck">fsck</primary>
363 </indexterm>
364 </listitem>
365 </varlistentry>
366
367 <varlistentry id="fsck.cramfs">
368 <term><command>fsck.cramfs</command></term>
369 <listitem>
370 <para>Performs a consistency check on the Cramfs file system on the
371 given device</para>
372 <indexterm zone="ch-system-util-linux-ng fsck.cramfs">
373 <primary sortas="b-fsck.cramfs">fsck.cramfs</primary>
374 </indexterm>
375 </listitem>
376 </varlistentry>
377
378 <varlistentry id="fsck.minix">
379 <term><command>fsck.minix</command></term>
380 <listitem>
381 <para>Performs a consistency check on the Minix file system on the
382 given device</para>
383 <indexterm zone="ch-system-util-linux-ng fsck.minix">
384 <primary sortas="b-fsck.minix">fsck.minix</primary>
385 </indexterm>
386 </listitem>
387 </varlistentry>
388
389 <varlistentry id="getopt">
390 <term><command>getopt</command></term>
391 <listitem>
392 <para>Parses options in the given command line</para>
393 <indexterm zone="ch-system-util-linux-ng getopt">
394 <primary sortas="b-getopt">getopt</primary>
395 </indexterm>
396 </listitem>
397 </varlistentry>
398
399 <varlistentry id="hexdump">
400 <term><command>hexdump</command></term>
401 <listitem>
402 <para>Dumps the given file in hexadecimal or in another given
403 format</para>
404 <indexterm zone="ch-system-util-linux-ng hexdump">
405 <primary sortas="b-hexdump">hexdump</primary>
406 </indexterm>
407 </listitem>
408 </varlistentry>
409
410 <varlistentry id="hwclock">
411 <term><command>hwclock</command></term>
412 <listitem>
413 <para>Reads or sets the system's hardware clock, also called
414 the Real-Time Clock (RTC) or Basic Input-Output System (BIOS)
415 clock</para>
416 <indexterm zone="ch-system-util-linux-ng hwclock">
417 <primary sortas="b-hwclock">hwclock</primary>
418 </indexterm>
419 </listitem>
420 </varlistentry>
421
422 <varlistentry id="i386">
423 <term><command>i386</command></term>
424 <listitem>
425 <para>A symbolic link to setarch</para>
426 <indexterm zone="ch-system-util-linux-ng i386">
427 <primary sortas="b-i386">i386</primary>
428 </indexterm>
429 </listitem>
430 </varlistentry>
431
432 <varlistentry id="ionice">
433 <term><command>ionice</command></term>
434 <listitem>
435 <para>Gets or sets the io scheduling class and priority for a program</para>
436 <indexterm zone="ch-system-util-linux-ng ionice">
437 <primary sortas="b-ionice">ionice</primary>
438 </indexterm>
439 </listitem>
440 </varlistentry>
441
442 <varlistentry id="ipcmk">
443 <term><command>ipcmk</command></term>
444 <listitem>
445 <para>Creates various IPC resources</para>
446 <indexterm zone="ch-system-util-linux-ng ipcmk">
447 <primary sortas="b-ipcmk">ipcmk</primary>
448 </indexterm>
449 </listitem>
450 </varlistentry>
451
452 <varlistentry id="ipcrm">
453 <term><command>ipcrm</command></term>
454 <listitem>
455 <para>Removes the given Inter-Process Communication (IPC) resource</para>
456 <indexterm zone="ch-system-util-linux-ng ipcrm">
457 <primary sortas="b-ipcrm">ipcrm</primary>
458 </indexterm>
459 </listitem>
460 </varlistentry>
461
462 <varlistentry id="ipcs">
463 <term><command>ipcs</command></term>
464 <listitem>
465 <para>Provides IPC status information</para>
466 <indexterm zone="ch-system-util-linux-ng ipcs">
467 <primary sortas="b-ipcs">ipcs</primary>
468 </indexterm>
469 </listitem>
470 </varlistentry>
471
472 <varlistentry id="isosize">
473 <term><command>isosize</command></term>
474 <listitem>
475 <para>Reports the size of an iso9660 file system</para>
476 <indexterm zone="ch-system-util-linux-ng isosize">
477 <primary sortas="b-isosize">isosize</primary>
478 </indexterm>
479 </listitem>
480 </varlistentry>
481
482 <varlistentry id="ldattach">
483 <term><command>ldattach</command></term>
484 <listitem>
485 <para>Attaches a line discipline to a serial line</para>
486 <indexterm zone="ch-system-util-linux-ng ldattach">
487 <primary sortas="b-ldattach">ldattach</primary>
488 </indexterm>
489 </listitem>
490 </varlistentry>
491
492 <varlistentry id="line">
493 <term><command>line</command></term>
494 <listitem>
495 <para>Copies a single line</para>
496 <indexterm zone="ch-system-util-linux-ng line">
497 <primary sortas="b-line">line</primary>
498 </indexterm>
499 </listitem>
500 </varlistentry>
501
502 <varlistentry id="linux32">
503 <term><command>linux32</command></term>
504 <listitem>
505 <para>A symbolic link to setarch</para>
506 <indexterm zone="ch-system-util-linux-ng linux32">
507 <primary sortas="b-linux32">linux32</primary>
508 </indexterm>
509 </listitem>
510 </varlistentry>
511
512 <varlistentry id="linux64">
513 <term><command>linux64</command></term>
514 <listitem>
515 <para>A symbolic link to setarch</para>
516 <indexterm zone="ch-system-util-linux-ng linux64">
517 <primary sortas="b-linux64">linux64</primary>
518 </indexterm>
519 </listitem>
520 </varlistentry>
521
522 <varlistentry id="logger">
523 <term><command>logger</command></term>
524 <listitem>
525 <para>Enters the given message into the system log</para>
526 <indexterm zone="ch-system-util-linux-ng logger">
527 <primary sortas="b-logger">logger</primary>
528 </indexterm>
529 </listitem>
530 </varlistentry>
531
532 <varlistentry id="look">
533 <term><command>look</command></term>
534 <listitem>
535 <para>Displays lines that begin with the given string</para>
536 <indexterm zone="ch-system-util-linux-ng look">
537 <primary sortas="b-look">look</primary>
538 </indexterm>
539 </listitem>
540 </varlistentry>
541
542 <varlistentry id="losetup">
543 <term><command>losetup</command></term>
544 <listitem>
545 <para>Sets up and controls loop devices</para>
546 <indexterm zone="ch-system-util-linux-ng losetup">
547 <primary sortas="b-losetup">losetup</primary>
548 </indexterm>
549 </listitem>
550 </varlistentry>
551
552 <varlistentry id="lscpu">
553 <term><command>lscpu</command></term>
554 <listitem>
555 <para>Prints CPU architechture information</para>
556 <indexterm zone="ch-system-util-linux-ng lscpu">
557 <primary sortas="b-lscpu">lscpu</primary>
558 </indexterm>
559 </listitem>
560 </varlistentry>
561
562 <varlistentry id="mcookie">
563 <term><command>mcookie</command></term>
564 <listitem>
565 <para>Generates magic cookies (128-bit random hexadecimal numbers) for
566 <command>xauth</command></para>
567 <indexterm zone="ch-system-util-linux-ng mcookie">
568 <primary sortas="b-mcookie">mcookie</primary>
569 </indexterm>
570 </listitem>
571 </varlistentry>
572
573 <varlistentry id="mkfs">
574 <term><command>mkfs</command></term>
575 <listitem>
576 <para>Builds a file system on a device (usually a hard disk
577 partition)</para>
578 <indexterm zone="ch-system-util-linux-ng mkfs">
579 <primary sortas="b-mkfs">mkfs</primary>
580 </indexterm>
581 </listitem>
582 </varlistentry>
583
584 <varlistentry id="mkfs.bfs">
585 <term><command>mkfs.bfs</command></term>
586 <listitem>
587 <para>Creates a Santa Cruz Operations (SCO) bfs file system</para>
588 <indexterm zone="ch-system-util-linux-ng mkfs.bfs">
589 <primary sortas="b-mkfs.bfs">mkfs.bfs</primary>
590 </indexterm>
591 </listitem>
592 </varlistentry>
593
594 <varlistentry id="mkfs.cramfs">
595 <term><command>mkfs.cramfs</command></term>
596 <listitem>
597 <para>Creates a cramfs file system</para>
598 <indexterm zone="ch-system-util-linux-ng mkfs.cramfs">
599 <primary sortas="b-mkfs.cramfs">mkfs.cramfs</primary>
600 </indexterm>
601 </listitem>
602 </varlistentry>
603
604 <varlistentry id="mkfs.minix">
605 <term><command>mkfs.minix</command></term>
606 <listitem>
607 <para>Creates a Minix file system</para>
608 <indexterm zone="ch-system-util-linux-ng mkfs.minix">
609 <primary sortas="b-mkfs.minix">mkfs.minix</primary>
610 </indexterm>
611 </listitem>
612 </varlistentry>
613
614 <varlistentry id="mkswap">
615 <term><command>mkswap</command></term>
616 <listitem>
617 <para>Initializes the given device or file to be used as a swap
618 area</para>
619 <indexterm zone="ch-system-util-linux-ng mkswap">
620 <primary sortas="b-mkswap">mkswap</primary>
621 </indexterm>
622 </listitem>
623 </varlistentry>
624
625 <varlistentry id="more">
626 <term><command>more</command></term>
627 <listitem>
628 <para>A filter for paging through text one screen at a time</para>
629 <indexterm zone="ch-system-util-linux-ng more">
630 <primary sortas="b-more">more</primary>
631 </indexterm>
632 </listitem>
633 </varlistentry>
634
635 <varlistentry id="mount">
636 <term><command>mount</command></term>
637 <listitem>
638 <para>Attaches the file system on the given device to a specified
639 directory in the file-system tree</para>
640 <indexterm zone="ch-system-util-linux-ng mount">
641 <primary sortas="b-mount">mount</primary>
642 </indexterm>
643 </listitem>
644 </varlistentry>
645
646 <varlistentry id="namei">
647 <term><command>namei</command></term>
648 <listitem>
649 <para>Shows the symbolic links in the given pathnames</para>
650 <indexterm zone="ch-system-util-linux-ng namei">
651 <primary sortas="b-namei">namei</primary>
652 </indexterm>
653 </listitem>
654 </varlistentry>
655
656 <varlistentry id="partx">
657 <term><command>partx</command></term>
658 <listitem>
659 <para>Tells the kernel about the presence and numbering of on-disk
660 partitions</para>
661 <indexterm zone="ch-system-util-linux-ng partx">
662 <primary sortas="b-partx">partx</primary>
663 </indexterm>
664 </listitem>
665 </varlistentry>
666
667 <varlistentry id="pg">
668 <term><command>pg</command></term>
669 <listitem>
670 <para>Displays a text file one screen full at a time</para>
671 <indexterm zone="ch-system-util-linux-ng pg">
672 <primary sortas="b-pg">pg</primary>
673 </indexterm>
674 </listitem>
675 </varlistentry>
676
677 <varlistentry id="pivot_root">
678 <term><command>pivot_root</command></term>
679 <listitem>
680 <para>Makes the given file system the new root file system of the
681 current process</para>
682 <indexterm zone="ch-system-util-linux-ng pivot_root">
683 <primary sortas="b-pivot_root">pivot_root</primary>
684 </indexterm>
685 </listitem>
686 </varlistentry>
687
688 <varlistentry id="readprofile">
689 <term><command>readprofile</command></term>
690 <listitem>
691 <para>Reads kernel profiling information</para>
692 <indexterm zone="ch-system-util-linux-ng readprofile">
693 <primary sortas="b-readprofile">readprofile</primary>
694 </indexterm>
695 </listitem>
696 </varlistentry>
697
698 <varlistentry id="rename">
699 <term><command>rename</command></term>
700 <listitem>
701 <para>Renames the given files, replacing a given string with
702 another</para>
703 <indexterm zone="ch-system-util-linux-ng rename">
704 <primary sortas="b-rename">rename</primary>
705 </indexterm>
706 </listitem>
707 </varlistentry>
708
709 <varlistentry id="renice">
710 <term><command>renice</command></term>
711 <listitem>
712 <para>Alters the priority of running processes</para>
713 <indexterm zone="ch-system-util-linux-ng renice">
714 <primary sortas="b-renice">renice</primary>
715 </indexterm>
716 </listitem>
717 </varlistentry>
718
719 <varlistentry id="rev">
720 <term><command>rev</command></term>
721 <listitem>
722 <para>Reverses the lines of a given file</para>
723 <indexterm zone="ch-system-util-linux-ng rev">
724 <primary sortas="b-rev">rev</primary>
725 </indexterm>
726 </listitem>
727 </varlistentry>
728
729 <varlistentry id="rtcwake">
730 <term><command>rtcwake</command></term>
731 <listitem>
732 <para>Used to enter a system sleep state until specified wakeup
733 time</para>
734 <indexterm zone="ch-system-util-linux-ng rtcwake">
735 <primary sortas="b-rtcwake">rtcwake</primary>
736 </indexterm>
737 </listitem>
738 </varlistentry>
739
740 <varlistentry id="script">
741 <term><command>script</command></term>
742 <listitem>
743 <para>Makes a typescript of a terminal session</para>
744 <indexterm zone="ch-system-util-linux-ng script">
745 <primary sortas="b-script">script</primary>
746 </indexterm>
747 </listitem>
748 </varlistentry>
749
750 <varlistentry id="scriptreplay">
751 <term><command>scriptreplay</command></term>
752 <listitem>
753 <para>Plays back typescripts using timing information</para>
754 <indexterm zone="ch-system-util-linux-ng scriptreplay">
755 <primary sortas="b-scriptreplay">scriptreplay</primary>
756 </indexterm>
757 </listitem>
758 </varlistentry>
759
760 <varlistentry id="setarch">
761 <term><command>setarch</command></term>
762 <listitem>
763 <para>Changes reported architecture in a new program environment and
764 sets personality flags</para>
765 <indexterm zone="ch-system-util-linux-ng setarch">
766 <primary sortas="b-setarch">setarch</primary>
767 </indexterm>
768 </listitem>
769 </varlistentry>
770
771 <varlistentry id="setsid">
772 <term><command>setsid</command></term>
773 <listitem>
774 <para>Runs the given program in a new session</para>
775 <indexterm zone="ch-system-util-linux-ng setsid">
776 <primary sortas="b-setsid">setsid</primary>
777 </indexterm>
778 </listitem>
779 </varlistentry>
780
781 <varlistentry id="setterm">
782 <term><command>setterm</command></term>
783 <listitem>
784 <para>Sets terminal attributes</para>
785 <indexterm zone="ch-system-util-linux-ng setterm">
786 <primary sortas="b-setterm">setterm</primary>
787 </indexterm>
788 </listitem>
789 </varlistentry>
790
791 <varlistentry id="sfdisk">
792 <term><command>sfdisk</command></term>
793 <listitem>
794 <para>A disk partition table manipulator</para>
795 <indexterm zone="ch-system-util-linux-ng sfdisk">
796 <primary sortas="b-sfdisk">sfdisk</primary>
797 </indexterm>
798 </listitem>
799 </varlistentry>
800
801 <varlistentry id="swapoff">
802 <term><command>swapoff</command></term>
803 <listitem>
804 <para>Disables devices and files for paging and swapping</para>
805 <indexterm zone="ch-system-util-linux-ng swapoff">
806 <primary sortas="b-swapoff">swapoff</primary>
807 </indexterm>
808 </listitem>
809 </varlistentry>
810
811 <varlistentry id="swapon">
812 <term><command>swapon</command></term>
813 <listitem>
814 <para>Enables devices and files for paging and swapping and
815 lists the devices and files currently in use</para>
816 <indexterm zone="ch-system-util-linux-ng swapon">
817 <primary sortas="b-swapon">swapon</primary>
818 </indexterm>
819 </listitem>
820 </varlistentry>
821
822 <varlistentry id="switch_root">
823 <term><command>switch_root</command></term>
824 <listitem>
825 <para>Switches to another filesystem as the root of the mount tree</para>
826 <indexterm zone="ch-system-util-linux-ng switch_root">
827 <primary sortas="b-switch_root">switch_root</primary>
828 </indexterm>
829 </listitem>
830 </varlistentry>
831
832 <varlistentry id="tailf">
833 <term><command>tailf</command></term>
834 <listitem>
835 <para>Tracks the growth of a log file. Displays the last 10 lines
836 of a log file, then continues displaying any new entries in the
837 log file as they are created</para>
838 <indexterm zone="ch-system-util-linux-ng tailf">
839 <primary sortas="b-tailf">tailf</primary>
840 </indexterm>
841 </listitem>
842 </varlistentry>
843
844 <varlistentry id="taskset">
845 <term><command>taskset</command></term>
846 <listitem>
847 <para>Retrieves or sets a process' CPU affinity</para>
848 <indexterm zone="ch-system-util-linux-ng taskset">
849 <primary sortas="b-taskset">taskset</primary>
850 </indexterm>
851 </listitem>
852 </varlistentry>
853
854 <varlistentry id="tunelp">
855 <term><command>tunelp</command></term>
856 <listitem>
857 <para>Tunes the parameters of the line printer</para>
858 <indexterm zone="ch-system-util-linux-ng tunelp">
859 <primary sortas="b-tunelp">tunelp</primary>
860 </indexterm>
861 </listitem>
862 </varlistentry>
863
864 <varlistentry id="ul">
865 <term><command>ul</command></term>
866 <listitem>
867 <para>A filter for translating underscores into escape sequences
868 indicating underlining for the terminal in use</para>
869 <indexterm zone="ch-system-util-linux-ng ul">
870 <primary sortas="b-ul">ul</primary>
871 </indexterm>
872 </listitem>
873 </varlistentry>
874
875 <varlistentry id="umount">
876 <term><command>umount</command></term>
877 <listitem>
878 <para>Disconnects a file system from the system's file tree</para>
879 <indexterm zone="ch-system-util-linux-ng umount">
880 <primary sortas="b-umount">umount</primary>
881 </indexterm>
882 </listitem>
883 </varlistentry>
884
885 <varlistentry id="uuidd">
886 <term><command>uuidd</command></term>
887 <listitem>
888 <para>A daemon used by the UUID library to generate time-based
889 UUIDs in a secure and guranteed-unique fashion.</para>
890 <indexterm zone="ch-system-util-linux-ng uuidd">
891 <primary sortas="b-uuidd">uuidd</primary>
892 </indexterm>
893 </listitem>
894 </varlistentry>
895
896 <varlistentry id="uuidgen">
897 <term><command>uuidgen</command></term>
898 <listitem>
899 <para>Creates new UUIDs. Each new UUID can reasonably be considered
900 unique among all UUIDs created, on the local system and on other
901 systems, in the past and in the future</para>
902 <indexterm zone="ch-system-util-linux-ng uuidgen">
903 <primary sortas="b-uuidgen">uuidgen</primary>
904 </indexterm>
905 </listitem>
906 </varlistentry>
907
908 <varlistentry id="wall">
909 <term><command>wall</command></term>
910 <listitem>
911 <para>Displays the contents of a file or, by default, its standard
912 input, on the terminals of all currently logged in users</para>
913 <indexterm zone="ch-system-util-linux-ng wall">
914 <primary sortas="b-wall">wall</primary>
915 </indexterm>
916 </listitem>
917 </varlistentry>
918
919 <varlistentry id="whereis">
920 <term><command>whereis</command></term>
921 <listitem>
922 <para>Reports the location of the binary, source, and man page
923 for the given command</para>
924 <indexterm zone="ch-system-util-linux-ng whereis">
925 <primary sortas="b-whereis">whereis</primary>
926 </indexterm>
927 </listitem>
928 </varlistentry>
929
930 <varlistentry id="write">
931 <term><command>write</command></term>
932 <listitem>
933 <para>Sends a message to the given user <emphasis>if</emphasis> that
934 user has not disabled receipt of such messages</para>
935 <indexterm zone="ch-system-util-linux-ng write">
936 <primary sortas="b-write">write</primary>
937 </indexterm>
938 </listitem>
939 </varlistentry>
940
941 <varlistentry id="libblkid">
942 <term><filename class="libraryfile">libblkid</filename></term>
943 <listitem>
944 <para>Contains routines for device identification and token
945 extraction</para>
946 <indexterm zone="ch-system-util-linux-ng libblkid">
947 <primary sortas="c-libblkid">libblkid</primary>
948 </indexterm>
949 </listitem>
950 </varlistentry>
951
952 <varlistentry id="libuuid">
953 <term><filename class="libraryfile">libuuid</filename></term>
954 <listitem>
955 <para>Contains routines for generating unique identifiers for objects
956 that may be accessible beyond the local system</para>
957 <indexterm zone="ch-system-util-linux-ng libuuid">
958 <primary sortas="c-libuuid">libuuid</primary>
959 </indexterm>
960 </listitem>
961 </varlistentry>
962
963 </variablelist>
964
965 </sect2>
966
967</sect1>
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