source: chapter06/util-linux.xml@ 4bac71c

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Last change on this file since 4bac71c was 4bac71c, checked in by Matthew Burgess <matthew@…>, 16 years ago

Replace Util-linux with Util-linux-ng. Fixes #2077.

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@8457 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

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File size: 25.7 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-&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</title>
60
61<screen><userinput remap="configure">./configure</userinput></screen>
62
63 <para>Compile the package:</para>
64
65<screen><userinput remap="make">make</userinput></screen>
66
67<screen><userinput remap="install">make install</userinput></screen>
68
69 </sect2>
70
71 <sect2 id="contents-utillinux" role="content">
72 <title>Contents of Util-linux</title>
73
74 <segmentedlist>
75 <segtitle>Installed programs</segtitle>
76
77 <seglistitem>
78 <seg>agetty, arch, blockdev, cal, cfdisk, chkdupexe, col, colcrt,
79 colrm, column, ctrlaltdel, cytune, ddate, dmesg, elvtune, fdformat,
80 fdisk, flock, fsck.cramfs, fsck.minix, getopt, hexdump, hwclock, ipcrm,
81 ipcs, isosize, line, logger, look, losetup, mcookie, mkfs, mkfs.bfs,
82 mkfs.cramfs, mkfs.minix, mkswap, more, mount, namei, pg, pivot_root,
83 ramsize (link to rdev), raw, rdev, readprofile, rename, renice, rev,
84 rootflags (link to rdev), script, setfdprm, setsid, setterm, sfdisk,
85 swapoff (link to swapon), swapon, tailf, tunelp, ul, umount,
86 vidmode (link to rdev), whereis, and write</seg>
87 </seglistitem>
88 </segmentedlist>
89
90 <variablelist>
91 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
92 <?dbfo list-presentation="list"?>
93 <?dbhtml list-presentation="table"?>
94
95 <varlistentry id="agetty">
96 <term><command>agetty</command></term>
97 <listitem>
98 <para>Opens a tty port, prompts for a login name,
99 and then invokes the <command>login</command> program</para>
100 <indexterm zone="ch-system-util-linux-ng agetty">
101 <primary sortas="b-agetty">agetty</primary>
102 </indexterm>
103 </listitem>
104 </varlistentry>
105
106 <varlistentry id="arch">
107 <term><command>arch</command></term>
108 <listitem>
109 <para>Reports the machine's architecture</para>
110 <indexterm zone="ch-system-util-linux-ng arch">
111 <primary sortas="b-arch">arch</primary>
112 </indexterm>
113 </listitem>
114 </varlistentry>
115
116 <varlistentry id="blockdev">
117 <term><command>blockdev</command></term>
118 <listitem>
119 <para>Allows users to call block device ioctls from the command
120 line</para>
121 <indexterm zone="ch-system-util-linux-ng blockdev">
122 <primary sortas="b-blockdev">blockdev</primary>
123 </indexterm>
124 </listitem>
125 </varlistentry>
126
127 <varlistentry id="cal">
128 <term><command>cal</command></term>
129 <listitem>
130 <para>Displays a simple calendar</para>
131 <indexterm zone="ch-system-util-linux-ng cal">
132 <primary sortas="b-cal">cal</primary>
133 </indexterm>
134 </listitem>
135 </varlistentry>
136
137 <varlistentry id="cfdisk">
138 <term><command>cfdisk</command></term>
139 <listitem>
140 <para>Manipulates the partition table of the given device</para>
141 <indexterm zone="ch-system-util-linux-ng cfdisk">
142 <primary sortas="b-cfdisk">cfdisk</primary>
143 </indexterm>
144 </listitem>
145 </varlistentry>
146
147 <varlistentry id="chkdupexe">
148 <term><command>chkdupexe</command></term>
149 <listitem>
150 <para>Finds duplicate executables</para>
151 <indexterm zone="ch-system-util-linux-ng chkdupexe">
152 <primary sortas="b-chkdupexe">chkdupexe</primary>
153 </indexterm>
154 </listitem>
155 </varlistentry>
156
157 <varlistentry id="col">
158 <term><command>col</command></term>
159 <listitem>
160 <para>Filters out reverse line feeds</para>
161 <indexterm zone="ch-system-util-linux-ng col">
162 <primary sortas="b-col">col</primary>
163 </indexterm>
164 </listitem>
165 </varlistentry>
166
167 <varlistentry id="colcrt">
168 <term><command>colcrt</command></term>
169 <listitem>
170 <para>Filters <command>nroff</command> output for terminals
171 that lack some capabilities, such as overstriking and half-lines</para>
172 <indexterm zone="ch-system-util-linux-ng colcrt">
173 <primary sortas="b-colcrt">colcrt</primary>
174 </indexterm>
175 </listitem>
176 </varlistentry>
177
178 <varlistentry id="colrm">
179 <term><command>colrm</command></term>
180 <listitem>
181 <para>Filters out the given columns</para>
182 <indexterm zone="ch-system-util-linux-ng colrm">
183 <primary sortas="b-colrm">colrm</primary>
184 </indexterm>
185 </listitem>
186 </varlistentry>
187
188 <varlistentry id="column">
189 <term><command>column</command></term>
190 <listitem>
191 <para>Formats a given file into multiple columns</para>
192 <indexterm zone="ch-system-util-linux-ng column">
193 <primary sortas="b-column">column</primary>
194 </indexterm>
195 </listitem>
196 </varlistentry>
197
198 <varlistentry id="ctrlaltdel">
199 <term><command>ctrlaltdel</command></term>
200 <listitem>
201 <para>Sets the function of the Ctrl+Alt+Del key combination to a
202 hard or a soft reset</para>
203 <indexterm zone="ch-system-util-linux-ng ctrlaltdel">
204 <primary sortas="b-ctrlaltdel">ctrlaltdel</primary>
205 </indexterm>
206 </listitem>
207 </varlistentry>
208
209 <varlistentry id="cytune">
210 <term><command>cytune</command></term>
211 <listitem>
212 <para>Tunes the parameters of the serial line drivers for
213 Cyclades cards</para>
214 <indexterm zone="ch-system-util-linux-ng cytune">
215 <primary sortas="b-cytune">cytune</primary>
216 </indexterm>
217 </listitem>
218 </varlistentry>
219
220 <varlistentry id="ddate">
221 <term><command>ddate</command></term>
222 <listitem>
223 <para>Gives the Discordian date or converts the given Gregorian date
224 to a Discordian one</para>
225 <indexterm zone="ch-system-util-linux-ng ddate">
226 <primary sortas="b-ddate">ddate</primary>
227 </indexterm>
228 </listitem>
229 </varlistentry>
230
231 <varlistentry id="dmesg">
232 <term><command>dmesg</command></term>
233 <listitem>
234 <para>Dumps the kernel boot messages</para>
235 <indexterm zone="ch-system-util-linux-ng dmesg">
236 <primary sortas="b-dmesg">dmesg</primary>
237 </indexterm>
238 </listitem>
239 </varlistentry>
240
241 <varlistentry id="elvtune">
242 <term><command>elvtune</command></term>
243 <listitem>
244 <para>Tunes the performance and interactivity of a block
245 device</para>
246 <indexterm zone="ch-system-util-linux-ng elvtune">
247 <primary sortas="b-elvtune">elvtune</primary>
248 </indexterm>
249 </listitem>
250 </varlistentry>
251
252 <varlistentry id="fdformat">
253 <term><command>fdformat</command></term>
254 <listitem>
255 <para>Low-level formats a floppy disk</para>
256 <indexterm zone="ch-system-util-linux-ng fdformat">
257 <primary sortas="b-fdformat">fdformat</primary>
258 </indexterm>
259 </listitem>
260 </varlistentry>
261
262 <varlistentry id="fdisk">
263 <term><command>fdisk</command></term>
264 <listitem>
265 <para>Manipulates the paritition table of the given device</para>
266 <indexterm zone="ch-system-util-linux-ng fdisk">
267 <primary sortas="b-fdisk">fdisk</primary>
268 </indexterm>
269 </listitem>
270 </varlistentry>
271
272 <varlistentry id="flock">
273 <term><command>flock</command></term>
274 <listitem>
275 <para>Acquires a file lock and then executes a command with the lock
276 held</para>
277 <indexterm zone="ch-system-util-linux-ng flock">
278 <primary sortas="b-flock">flock</primary>
279 </indexterm>
280 </listitem>
281 </varlistentry>
282
283 <varlistentry id="fsck.cramfs">
284 <term><command>fsck.cramfs</command></term>
285 <listitem>
286 <para>Performs a consistency check on the Cramfs file system on the
287 given device</para>
288 <indexterm zone="ch-system-util-linux-ng fsck.cramfs">
289 <primary sortas="b-fsck.cramfs">fsck.cramfs</primary>
290 </indexterm>
291 </listitem>
292 </varlistentry>
293
294 <varlistentry id="fsck.minix">
295 <term><command>fsck.minix</command></term>
296 <listitem>
297 <para>Performs a consistency check on the Minix file system on the
298 given device</para>
299 <indexterm zone="ch-system-util-linux-ng fsck.minix">
300 <primary sortas="b-fsck.minix">fsck.minix</primary>
301 </indexterm>
302 </listitem>
303 </varlistentry>
304
305 <varlistentry id="getopt">
306 <term><command>getopt</command></term>
307 <listitem>
308 <para>Parses options in the given command line</para>
309 <indexterm zone="ch-system-util-linux-ng getopt">
310 <primary sortas="b-getopt">getopt</primary>
311 </indexterm>
312 </listitem>
313 </varlistentry>
314
315 <varlistentry id="hexdump">
316 <term><command>hexdump</command></term>
317 <listitem>
318 <para>Dumps the given file in hexadecimal or in another given
319 format</para>
320 <indexterm zone="ch-system-util-linux-ng hexdump">
321 <primary sortas="b-hexdump">hexdump</primary>
322 </indexterm>
323 </listitem>
324 </varlistentry>
325
326 <varlistentry id="hwclock">
327 <term><command>hwclock</command></term>
328 <listitem>
329 <para>Reads or sets the system's hardware clock, also called
330 the Real-Time Clock (RTC) or Basic Input-Output System (BIOS)
331 clock</para>
332 <indexterm zone="ch-system-util-linux-ng hwclock">
333 <primary sortas="b-hwclock">hwclock</primary>
334 </indexterm>
335 </listitem>
336 </varlistentry>
337
338 <varlistentry id="ipcrm">
339 <term><command>ipcrm</command></term>
340 <listitem>
341 <para>Removes the given Inter-Process Communication (IPC) resource</para>
342 <indexterm zone="ch-system-util-linux-ng ipcrm">
343 <primary sortas="b-ipcrm">ipcrm</primary>
344 </indexterm>
345 </listitem>
346 </varlistentry>
347
348 <varlistentry id="ipcs">
349 <term><command>ipcs</command></term>
350 <listitem>
351 <para>Provides IPC status information</para>
352 <indexterm zone="ch-system-util-linux-ng ipcs">
353 <primary sortas="b-ipcs">ipcs</primary>
354 </indexterm>
355 </listitem>
356 </varlistentry>
357
358 <varlistentry id="isosize">
359 <term><command>isosize</command></term>
360 <listitem>
361 <para>Reports the size of an iso9660 file system</para>
362 <indexterm zone="ch-system-util-linux-ng isosize">
363 <primary sortas="b-isosize">isosize</primary>
364 </indexterm>
365 </listitem>
366 </varlistentry>
367
368 <varlistentry id="line">
369 <term><command>line</command></term>
370 <listitem>
371 <para>Copies a single line</para>
372 <indexterm zone="ch-system-util-linux-ng line">
373 <primary sortas="b-line">line</primary>
374 </indexterm>
375 </listitem>
376 </varlistentry>
377
378 <varlistentry id="logger">
379 <term><command>logger</command></term>
380 <listitem>
381 <para>Enters the given message into the system log</para>
382 <indexterm zone="ch-system-util-linux-ng logger">
383 <primary sortas="b-logger">logger</primary>
384 </indexterm>
385 </listitem>
386 </varlistentry>
387
388 <varlistentry id="look">
389 <term><command>look</command></term>
390 <listitem>
391 <para>Displays lines that begin with the given string</para>
392 <indexterm zone="ch-system-util-linux-ng look">
393 <primary sortas="b-look">look</primary>
394 </indexterm>
395 </listitem>
396 </varlistentry>
397
398 <varlistentry id="losetup">
399 <term><command>losetup</command></term>
400 <listitem>
401 <para>Sets up and controls loop devices</para>
402 <indexterm zone="ch-system-util-linux-ng losetup">
403 <primary sortas="b-losetup">losetup</primary>
404 </indexterm>
405 </listitem>
406 </varlistentry>
407
408 <varlistentry id="mcookie">
409 <term><command>mcookie</command></term>
410 <listitem>
411 <para>Generates magic cookies (128-bit random hexadecimal numbers) for
412 <command>xauth</command></para>
413 <indexterm zone="ch-system-util-linux-ng mcookie">
414 <primary sortas="b-mcookie">mcookie</primary>
415 </indexterm>
416 </listitem>
417 </varlistentry>
418
419 <varlistentry id="mkfs">
420 <term><command>mkfs</command></term>
421 <listitem>
422 <para>Builds a file system on a device (usually a hard disk
423 partition)</para>
424 <indexterm zone="ch-system-util-linux-ng mkfs">
425 <primary sortas="b-mkfs">mkfs</primary>
426 </indexterm>
427 </listitem>
428 </varlistentry>
429
430 <varlistentry id="mkfs.bfs">
431 <term><command>mkfs.bfs</command></term>
432 <listitem>
433 <para>Creates a Santa Cruz Operations (SCO) bfs file system</para>
434 <indexterm zone="ch-system-util-linux-ng mkfs.bfs">
435 <primary sortas="b-mkfs.bfs">mkfs.bfs</primary>
436 </indexterm>
437 </listitem>
438 </varlistentry>
439
440 <varlistentry id="mkfs.cramfs">
441 <term><command>mkfs.cramfs</command></term>
442 <listitem>
443 <para>Creates a cramfs file system</para>
444 <indexterm zone="ch-system-util-linux-ng mkfs.cramfs">
445 <primary sortas="b-mkfs.cramfs">mkfs.cramfs</primary>
446 </indexterm>
447 </listitem>
448 </varlistentry>
449
450 <varlistentry id="mkfs.minix">
451 <term><command>mkfs.minix</command></term>
452 <listitem>
453 <para>Creates a Minix file system</para>
454 <indexterm zone="ch-system-util-linux-ng mkfs.minix">
455 <primary sortas="b-mkfs.minix">mkfs.minix</primary>
456 </indexterm>
457 </listitem>
458 </varlistentry>
459
460 <varlistentry id="mkswap">
461 <term><command>mkswap</command></term>
462 <listitem>
463 <para>Initializes the given device or file to be used as a swap
464 area</para>
465 <indexterm zone="ch-system-util-linux-ng mkswap">
466 <primary sortas="b-mkswap">mkswap</primary>
467 </indexterm>
468 </listitem>
469 </varlistentry>
470
471 <varlistentry id="more">
472 <term><command>more</command></term>
473 <listitem>
474 <para>A filter for paging through text one screen at a time</para>
475 <indexterm zone="ch-system-util-linux-ng more">
476 <primary sortas="b-more">more</primary>
477 </indexterm>
478 </listitem>
479 </varlistentry>
480
481 <varlistentry id="mount">
482 <term><command>mount</command></term>
483 <listitem>
484 <para>Attaches the file system on the given device to a specified
485 directory in the file-system tree</para>
486 <indexterm zone="ch-system-util-linux-ng mount">
487 <primary sortas="b-mount">mount</primary>
488 </indexterm>
489 </listitem>
490 </varlistentry>
491
492 <varlistentry id="namei">
493 <term><command>namei</command></term>
494 <listitem>
495 <para>Shows the symbolic links in the given pathnames</para>
496 <indexterm zone="ch-system-util-linux-ng namei">
497 <primary sortas="b-namei">namei</primary>
498 </indexterm>
499 </listitem>
500 </varlistentry>
501
502 <varlistentry id="pg">
503 <term><command>pg</command></term>
504 <listitem>
505 <para>Displays a text file one screen full at a time</para>
506 <indexterm zone="ch-system-util-linux-ng pg">
507 <primary sortas="b-pg">pg</primary>
508 </indexterm>
509 </listitem>
510 </varlistentry>
511
512 <varlistentry id="pivot_root">
513 <term><command>pivot_root</command></term>
514 <listitem>
515 <para>Makes the given file system the new root file system of the
516 current process</para>
517 <indexterm zone="ch-system-util-linux-ng pivot_root">
518 <primary sortas="b-pivot_root">pivot_root</primary>
519 </indexterm>
520 </listitem>
521 </varlistentry>
522
523 <varlistentry id="ramsize">
524 <term><command>ramsize</command></term>
525 <listitem>
526 <para>Sets the size of the RAM disk in a bootable image</para>
527 <indexterm zone="ch-system-util-linux-ng ramsize">
528 <primary sortas="b-ramsize">ramsize</primary>
529 </indexterm>
530 </listitem>
531 </varlistentry>
532
533 <varlistentry id="raw">
534 <term><command>raw</command></term>
535 <listitem>
536 <para>Used to bind a Linux raw character device to a block
537 device</para>
538 <indexterm zone="ch-system-util-linux-ng raw">
539 <primary sortas="b-raw">raw</primary>
540 </indexterm>
541 </listitem>
542 </varlistentry>
543
544 <varlistentry id="rdev">
545 <term><command>rdev</command></term>
546 <listitem>
547 <para>Queries and sets the root device, among other things, in a
548 bootable image</para>
549 <indexterm zone="ch-system-util-linux-ng rdev">
550 <primary sortas="b-rdev">rdev</primary>
551 </indexterm>
552 </listitem>
553 </varlistentry>
554
555 <varlistentry id="readprofile">
556 <term><command>readprofile</command></term>
557 <listitem>
558 <para>Reads kernel profiling information</para>
559 <indexterm zone="ch-system-util-linux-ng readprofile">
560 <primary sortas="b-readprofile">readprofile</primary>
561 </indexterm>
562 </listitem>
563 </varlistentry>
564
565 <varlistentry id="rename">
566 <term><command>rename</command></term>
567 <listitem>
568 <para>Renames the given files, replacing a given string with
569 another</para>
570 <indexterm zone="ch-system-util-linux-ng rename">
571 <primary sortas="b-rename">rename</primary>
572 </indexterm>
573 </listitem>
574 </varlistentry>
575
576 <varlistentry id="renice">
577 <term><command>renice</command></term>
578 <listitem>
579 <para>Alters the priority of running processes</para>
580 <indexterm zone="ch-system-util-linux-ng renice">
581 <primary sortas="b-renice">renice</primary>
582 </indexterm>
583 </listitem>
584 </varlistentry>
585
586 <varlistentry id="rev">
587 <term><command>rev</command></term>
588 <listitem>
589 <para>Reverses the lines of a given file</para>
590 <indexterm zone="ch-system-util-linux-ng rev">
591 <primary sortas="b-rev">rev</primary>
592 </indexterm>
593 </listitem>
594 </varlistentry>
595
596 <varlistentry id="rootflags">
597 <term><command>rootflags</command></term>
598 <listitem>
599 <para>Sets the rootflags in a bootable image</para>
600 <indexterm zone="ch-system-util-linux-ng rootflags">
601 <primary sortas="b-rootflags">rootflags</primary>
602 </indexterm>
603 </listitem>
604 </varlistentry>
605
606 <varlistentry id="script">
607 <term><command>script</command></term>
608 <listitem>
609 <para>Makes a typescript of a terminal session</para>
610 <indexterm zone="ch-system-util-linux-ng script">
611 <primary sortas="b-script">script</primary>
612 </indexterm>
613 </listitem>
614 </varlistentry>
615
616 <varlistentry id="setfdprm">
617 <term><command>setfdprm</command></term>
618 <listitem>
619 <para>Sets user-provided floppy disk parameters</para>
620 <indexterm zone="ch-system-util-linux-ng setfdprm">
621 <primary sortas="b-setfdprm">setfdprm</primary>
622 </indexterm>
623 </listitem>
624 </varlistentry>
625
626 <varlistentry id="setsid">
627 <term><command>setsid</command></term>
628 <listitem>
629 <para>Runs the given program in a new session</para>
630 <indexterm zone="ch-system-util-linux-ng setsid">
631 <primary sortas="b-setsid">setsid</primary>
632 </indexterm>
633 </listitem>
634 </varlistentry>
635
636 <varlistentry id="setterm">
637 <term><command>setterm</command></term>
638 <listitem>
639 <para>Sets terminal attributes</para>
640 <indexterm zone="ch-system-util-linux-ng setterm">
641 <primary sortas="b-setterm">setterm</primary>
642 </indexterm>
643 </listitem>
644 </varlistentry>
645
646 <varlistentry id="sfdisk">
647 <term><command>sfdisk</command></term>
648 <listitem>
649 <para>A disk partition table manipulator</para>
650 <indexterm zone="ch-system-util-linux-ng sfdisk">
651 <primary sortas="b-sfdisk">sfdisk</primary>
652 </indexterm>
653 </listitem>
654 </varlistentry>
655
656 <varlistentry id="swapoff">
657 <term><command>swapoff</command></term>
658 <listitem>
659 <para>Disables devices and files for paging and swapping</para>
660 <indexterm zone="ch-system-util-linux-ng swapoff">
661 <primary sortas="b-swapoff">swapoff</primary>
662 </indexterm>
663 </listitem>
664 </varlistentry>
665
666 <varlistentry id="swapon">
667 <term><command>swapon</command></term>
668 <listitem>
669 <para>Enables devices and files for paging and swapping and
670 lists the devices and files currently in use</para>
671 <indexterm zone="ch-system-util-linux-ng swapon">
672 <primary sortas="b-swapon">swapon</primary>
673 </indexterm>
674 </listitem>
675 </varlistentry>
676
677 <varlistentry id="tailf">
678 <term><command>tailf</command></term>
679 <listitem>
680 <para>Tracks the growth of a log file. Displays the last 10 lines
681 of a log file, then continues displaying any new entries in the
682 log file as they are created</para>
683 <indexterm zone="ch-system-util-linux-ng tailf">
684 <primary sortas="b-tailf">tailf</primary>
685 </indexterm>
686 </listitem>
687 </varlistentry>
688
689 <varlistentry id="tunelp">
690 <term><command>tunelp</command></term>
691 <listitem>
692 <para>Tunes the parameters of the line printer</para>
693 <indexterm zone="ch-system-util-linux-ng tunelp">
694 <primary sortas="b-tunelp">tunelp</primary>
695 </indexterm>
696 </listitem>
697 </varlistentry>
698
699 <varlistentry id="ul">
700 <term><command>ul</command></term>
701 <listitem>
702 <para>A filter for translating underscores into escape sequences
703 indicating underlining for the terminal in use</para>
704 <indexterm zone="ch-system-util-linux-ng ul">
705 <primary sortas="b-ul">ul</primary>
706 </indexterm>
707 </listitem>
708 </varlistentry>
709
710 <varlistentry id="umount">
711 <term><command>umount</command></term>
712 <listitem>
713 <para>Disconnects a file system from the system's file tree</para>
714 <indexterm zone="ch-system-util-linux-ng umount">
715 <primary sortas="b-umount">umount</primary>
716 </indexterm>
717 </listitem>
718 </varlistentry>
719
720 <varlistentry id="vidmode">
721 <term><command>vidmode</command></term>
722 <listitem>
723 <para>Sets the video mode in a bootable image</para>
724 <indexterm zone="ch-system-util-linux-ng vidmode">
725 <primary sortas="b-vidmode">vidmode</primary>
726 </indexterm>
727 </listitem>
728 </varlistentry>
729
730 <varlistentry id="whereis">
731 <term><command>whereis</command></term>
732 <listitem>
733 <para>Reports the location of the binary, source, and man page
734 for the given command</para>
735 <indexterm zone="ch-system-util-linux-ng whereis">
736 <primary sortas="b-whereis">whereis</primary>
737 </indexterm>
738 </listitem>
739 </varlistentry>
740
741 <varlistentry id="write">
742 <term><command>write</command></term>
743 <listitem>
744 <para>Sends a message to the given user <emphasis>if</emphasis> that
745 user has not disabled receipt of such messages</para>
746 <indexterm zone="ch-system-util-linux-ng write">
747 <primary sortas="b-write">write</primary>
748 </indexterm>
749 </listitem>
750 </varlistentry>
751
752 </variablelist>
753
754 </sect2>
755
756</sect1>
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