source: BOOK/final-system/common/util-linux-ng.xml@ a85d737

clfs-1.2 clfs-2.1 clfs-3.0.0-systemd clfs-3.0.0-sysvinit systemd sysvinit
Last change on this file since a85d737 was bf8339f, checked in by Jim Gifford <clfs@…>, 16 years ago

Added arch to util-linux-ng build. Also fixed descriptions of

configure paramters

  • Property mode set to 100644
File size: 27.3 KB
Line 
1<?xml version="1.0" encoding="ISO-8859-1"?>
2<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
3 "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
4 <!ENTITY % general-entities SYSTEM "../../general.ent">
5 %general-entities;
6]>
7
8<sect1 id="ch-system-util-linux-ng" role="wrap">
9 <?dbhtml filename="util-linux-ng.html"?>
10
11 <title>Util-linux-ng-&util-linux-ng-version;</title>
12
13 <indexterm zone="ch-system-util-linux-ng">
14 <primary sortas="a-Util-linux-ng">Util-linux-ng</primary>
15 </indexterm>
16
17 <sect2 role="package">
18 <title/>
19
20 <para>The Util-linux-ng package contains miscellaneous utility programs.
21 Among them are utilities for handling file systems, consoles, partitions,
22 and messages.</para>
23
24
25 </sect2>
26
27 <sect2 id="fhs-util-linux-ng" role="installation">
28 <title>FHS compliance notes</title>
29
30 <para>The FHS recommends using the <filename
31 class="directory">/var/lib/hwclock</filename> directory instead of the
32 usual <filename class="directory">/etc</filename> directory as the
33 location for the <filename>adjtime</filename> file. To make the
34 <command>hwclock</command> program FHS-compliant, run the following:</para>
35
36<screen><userinput>sed -i 's@etc/adjtime@var/lib/hwclock/adjtime@g' \
37 hwclock/hwclock.c
38mkdir -pv /var/lib/hwclock</userinput></screen>
39
40 </sect2>
41
42 <sect2 role="installation">
43 <title>Installation of Util-linux-ng</title>
44
45 <para os="a">Prepare Util-linux-ng for compilation:</para>
46
47<screen os="b"><userinput>./configure --enable-arch \
48 --enable-partx --enable-write --disable-wall</userinput></screen>
49
50 <variablelist os="c">
51 <title>The meaning of the configure options:</title>
52
53 <varlistentry>
54 <term><parameter>--enable-arch</parameter></term>
55 <listitem>
56 <para>This option allows the <command>arch</command> program to be
57 installed.</para>
58 </listitem>
59 </varlistentry>
60
61 <varlistentry>
62 <term><parameter>--enable-partx</parameter></term>
63 <listitem>
64 <para>Enables building the <command>addpart</command>, <command>delpart</command>,
65 <command>partx</command> programs.</para>
66 </listitem>
67 </varlistentry>
68
69 <varlistentry>
70 <term><parameter>--enable-write</parameter></term>
71 <listitem>
72 <para>This option allows the <command>write</command> program to be
73 installed.</para>
74 </listitem>
75 </varlistentry>
76
77 <varlistentry>
78 <term><parameter>--disable-wall</parameter></term>
79 <listitem>
80 <para>Disables building the <command>wall</command> program,
81 as the Sysvinit package installs its own version.</para>
82 </listitem>
83 </varlistentry>
84
85 </variablelist>
86
87 <para os="d">Compile the package:</para>
88
89<screen os="e"><userinput>make</userinput></screen>
90
91 <para os="f">This package does not come with a test suite.</para>
92
93 <para os="g">Install the package:</para>
94
95<screen os="h"><userinput>make install</userinput></screen>
96
97 <para os="i">Move the <command>logger</command> binary to
98 <filename class="directory">/bin</filename> as it is needed by the
99 CLFS-Bootscripts package:</para>
100
101<screen os="j"><userinput>mv -v /usr/bin/logger /bin</userinput></screen>
102
103 </sect2>
104
105 <sect2 id="contents-util-linux-ng" role="content">
106 <title>Contents of Util-linux-ng</title>
107
108 <segmentedlist>
109 <segtitle>Installed programs</segtitle>
110
111 <seglistitem>
112 <seg>addpart, agetty, blockdev, cal, cfdisk, chkdupexe, col, colcrt,
113 colrm, column, ctrlaltdel, cytune, ddate, delpart, dmesg, fdformat,
114 fdisk, flock, fsck.cramfs, fsck.minix, getopt, hexdump, hwclock, ionice,
115 ipcrm, ipcs, isosize, ldattach, line, logger, look, losetup, mcookie,
116 mkfs, mkfs.bfs, mkfs.cramfs, mkfs.minix, mkswap, more, mount, namei,
117 partx, pg, pivot_root, readprofile, rename, renice, rev, rtcwake, script,
118 scriptreplay, setarch, setsid, setterm, sfdisk, swapoff (link to swapon),
119 swapon, tailf, taskset, tunelp, ul, umount, whereis, and write</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 kernel of a new partition</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="blockdev">
150 <term><command>blockdev</command></term>
151 <listitem>
152 <para>Allows users to call block device ioctls from the command
153 line</para>
154 <indexterm zone="ch-system-util-linux-ng blockdev">
155 <primary sortas="b-blockdev">blockdev</primary>
156 </indexterm>
157 </listitem>
158 </varlistentry>
159
160 <varlistentry id="cal">
161 <term><command>cal</command></term>
162 <listitem>
163 <para>Displays a simple calendar</para>
164 <indexterm zone="ch-system-util-linux-ng cal">
165 <primary sortas="b-cal">cal</primary>
166 </indexterm>
167 </listitem>
168 </varlistentry>
169
170 <varlistentry id="cfdisk">
171 <term><command>cfdisk</command></term>
172 <listitem>
173 <para>Manipulates the partition table of the given device</para>
174 <indexterm zone="ch-system-util-linux-ng cfdisk">
175 <primary sortas="b-cfdisk">cfdisk</primary>
176 </indexterm>
177 </listitem>
178 </varlistentry>
179
180 <varlistentry id="chkdupexe">
181 <term><command>chkdupexe</command></term>
182 <listitem>
183 <para>Finds duplicate executables</para>
184 <indexterm zone="ch-system-util-linux-ng chkdupexe">
185 <primary sortas="b-chkdupexe">chkdupexe</primary>
186 </indexterm>
187 </listitem>
188 </varlistentry>
189
190 <varlistentry id="col">
191 <term><command>col</command></term>
192 <listitem>
193 <para>Filters out reverse line feeds</para>
194 <indexterm zone="ch-system-util-linux-ng col">
195 <primary sortas="b-col">col</primary>
196 </indexterm>
197 </listitem>
198 </varlistentry>
199
200 <varlistentry id="colcrt">
201 <term><command>colcrt</command></term>
202 <listitem>
203 <para>Filters <command>nroff</command> output for terminals
204 that lack some capabilities, such as overstriking and half-lines</para>
205 <indexterm zone="ch-system-util-linux-ng colcrt">
206 <primary sortas="b-colcrt">colcrt</primary>
207 </indexterm>
208 </listitem>
209 </varlistentry>
210
211 <varlistentry id="colrm">
212 <term><command>colrm</command></term>
213 <listitem>
214 <para>Filters out the given columns</para>
215 <indexterm zone="ch-system-util-linux-ng colrm">
216 <primary sortas="b-colrm">colrm</primary>
217 </indexterm>
218 </listitem>
219 </varlistentry>
220
221 <varlistentry id="column">
222 <term><command>column</command></term>
223 <listitem>
224 <para>Formats a given file into multiple columns</para>
225 <indexterm zone="ch-system-util-linux-ng column">
226 <primary sortas="b-column">column</primary>
227 </indexterm>
228 </listitem>
229 </varlistentry>
230
231 <varlistentry id="ctrlaltdel">
232 <term><command>ctrlaltdel</command></term>
233 <listitem>
234 <para>Sets the function of the Ctrl+Alt+Del key combination to a
235 hard or a soft reset</para>
236 <indexterm zone="ch-system-util-linux-ng ctrlaltdel">
237 <primary sortas="b-ctrlaltdel">ctrlaltdel</primary>
238 </indexterm>
239 </listitem>
240 </varlistentry>
241
242 <varlistentry id="cytune">
243 <term><command>cytune</command></term>
244 <listitem>
245 <para>Tunes the parameters of the serial line drivers for
246 Cyclades cards</para>
247 <indexterm zone="ch-system-util-linux-ng cytune">
248 <primary sortas="b-cytune">cytune</primary>
249 </indexterm>
250 </listitem>
251 </varlistentry>
252
253 <varlistentry id="ddate">
254 <term><command>ddate</command></term>
255 <listitem>
256 <para>Gives the Discordian date or converts the given Gregorian date
257 to a Discordian one</para>
258 <indexterm zone="ch-system-util-linux-ng ddate">
259 <primary sortas="b-ddate">ddate</primary>
260 </indexterm>
261 </listitem>
262 </varlistentry>
263
264 <varlistentry id="delpart">
265 <term><command>delpart</command></term>
266 <listitem>
267 <para>Asks the kernel to remove a partition</para>
268 <indexterm zone="ch-system-util-linux-ng delpart">
269 <primary sortas="b-delpart">delpart</primary>
270 </indexterm>
271 </listitem>
272 </varlistentry>
273
274 <varlistentry id="dmesg">
275 <term><command>dmesg</command></term>
276 <listitem>
277 <para>Dumps the kernel boot messages</para>
278 <indexterm zone="ch-system-util-linux-ng dmesg">
279 <primary sortas="b-dmesg">dmesg</primary>
280 </indexterm>
281 </listitem>
282 </varlistentry>
283
284 <varlistentry id="fdformat">
285 <term><command>fdformat</command></term>
286 <listitem>
287 <para>Low-level formats a floppy disk</para>
288 <indexterm zone="ch-system-util-linux-ng fdformat">
289 <primary sortas="b-fdformat">fdformat</primary>
290 </indexterm>
291 </listitem>
292 </varlistentry>
293
294 <varlistentry id="fdisk">
295 <term><command>fdisk</command></term>
296 <listitem>
297 <para>Manipulates the partition table of the given device</para>
298 <indexterm zone="ch-system-util-linux-ng fdisk">
299 <primary sortas="b-fdisk">fdisk</primary>
300 </indexterm>
301 </listitem>
302 </varlistentry>
303
304 <varlistentry id="flock">
305 <term><command>flock</command></term>
306 <listitem>
307 <para>Acquires a file lock and then executes a command with the lock
308 held</para>
309 <indexterm zone="ch-system-util-linux-ng flock">
310 <primary sortas="b-flock">flock</primary>
311 </indexterm>
312 </listitem>
313 </varlistentry>
314
315 <varlistentry id="fsck.cramfs">
316 <term><command>fsck.cramfs</command></term>
317 <listitem>
318 <para>Performs a consistency check on the Cramfs file system on the
319 given device</para>
320 <indexterm zone="ch-system-util-linux-ng fsck.cramfs">
321 <primary sortas="b-fsck.cramfs">fsck.cramfs</primary>
322 </indexterm>
323 </listitem>
324 </varlistentry>
325
326 <varlistentry id="fsck.minix">
327 <term><command>fsck.minix</command></term>
328 <listitem>
329 <para>Performs a consistency check on the Minix file system on the
330 given device</para>
331 <indexterm zone="ch-system-util-linux-ng fsck.minix">
332 <primary sortas="b-fsck.minix">fsck.minix</primary>
333 </indexterm>
334 </listitem>
335 </varlistentry>
336
337 <varlistentry id="getopt">
338 <term><command>getopt</command></term>
339 <listitem>
340 <para>Parses options in the given command line</para>
341 <indexterm zone="ch-system-util-linux-ng getopt">
342 <primary sortas="b-getopt">getopt</primary>
343 </indexterm>
344 </listitem>
345 </varlistentry>
346
347 <varlistentry id="hexdump">
348 <term><command>hexdump</command></term>
349 <listitem>
350 <para>Dumps the given file in hexadecimal or in another given
351 format</para>
352 <indexterm zone="ch-system-util-linux-ng hexdump">
353 <primary sortas="b-hexdump">hexdump</primary>
354 </indexterm>
355 </listitem>
356 </varlistentry>
357
358 <varlistentry id="hwclock">
359 <term><command>hwclock</command></term>
360 <listitem>
361 <para>Reads or sets the system's hardware clock, also called
362 the Real-Time Clock (RTC) or Basic Input-Output System (BIOS)
363 clock</para>
364 <indexterm zone="ch-system-util-linux-ng hwclock">
365 <primary sortas="b-hwclock">hwclock</primary>
366 </indexterm>
367 </listitem>
368 </varlistentry>
369
370 <varlistentry id="ionice">
371 <term><command>ionice</command></term>
372 <listitem>
373 <para>Gives and sets program I/O scheduling class and priority</para>
374 <indexterm zone="ch-system-util-linux-ng ionice">
375 <primary sortas="b-ionice">ionice</primary>
376 </indexterm>
377 </listitem>
378 </varlistentry>
379
380 <varlistentry id="ipcrm">
381 <term><command>ipcrm</command></term>
382 <listitem>
383 <para>Removes the given Inter-Process Communication (IPC) resource</para>
384 <indexterm zone="ch-system-util-linux-ng ipcrm">
385 <primary sortas="b-ipcrm">ipcrm</primary>
386 </indexterm>
387 </listitem>
388 </varlistentry>
389
390 <varlistentry id="ipcs">
391 <term><command>ipcs</command></term>
392 <listitem>
393 <para>Provides IPC status information</para>
394 <indexterm zone="ch-system-util-linux-ng ipcs">
395 <primary sortas="b-ipcs">ipcs</primary>
396 </indexterm>
397 </listitem>
398 </varlistentry>
399
400 <varlistentry id="isosize">
401 <term><command>isosize</command></term>
402 <listitem>
403 <para>Reports the size of an iso9660 file system</para>
404 <indexterm zone="ch-system-util-linux-ng isosize">
405 <primary sortas="b-isosize">isosize</primary>
406 </indexterm>
407 </listitem>
408 </varlistentry>
409
410 <varlistentry id="ldattach">
411 <term><command>ldattach</command></term>
412 <listitem>
413 <para>Attaches a line discipline to a serial line</para>
414 <indexterm zone="ch-system-util-linux-ng ldattach">
415 <primary sortas="b-ldattach">ldattach</primary>
416 </indexterm>
417 </listitem>
418 </varlistentry>
419
420 <varlistentry id="line">
421 <term><command>line</command></term>
422 <listitem>
423 <para>Copies a single line</para>
424 <indexterm zone="ch-system-util-linux-ng line">
425 <primary sortas="b-line">line</primary>
426 </indexterm>
427 </listitem>
428 </varlistentry>
429
430 <varlistentry id="logger">
431 <term><command>logger</command></term>
432 <listitem>
433 <para>Enters the given message into the system log</para>
434 <indexterm zone="ch-system-util-linux-ng logger">
435 <primary sortas="b-logger">logger</primary>
436 </indexterm>
437 </listitem>
438 </varlistentry>
439
440 <varlistentry id="look">
441 <term><command>look</command></term>
442 <listitem>
443 <para>Displays lines that begin with the given string</para>
444 <indexterm zone="ch-system-util-linux-ng look">
445 <primary sortas="b-look">look</primary>
446 </indexterm>
447 </listitem>
448 </varlistentry>
449
450 <varlistentry id="losetup">
451 <term><command>losetup</command></term>
452 <listitem>
453 <para>Sets up and controls loop devices</para>
454 <indexterm zone="ch-system-util-linux-ng losetup">
455 <primary sortas="b-losetup">losetup</primary>
456 </indexterm>
457 </listitem>
458 </varlistentry>
459
460 <varlistentry id="mcookie">
461 <term><command>mcookie</command></term>
462 <listitem>
463 <para>Generates magic cookies (128-bit random hexadecimal numbers) for
464 <command>xauth</command></para>
465 <indexterm zone="ch-system-util-linux-ng mcookie">
466 <primary sortas="b-mcookie">mcookie</primary>
467 </indexterm>
468 </listitem>
469 </varlistentry>
470
471 <varlistentry id="mkfs">
472 <term><command>mkfs</command></term>
473 <listitem>
474 <para>Builds a file system on a device (usually a hard disk
475 partition)</para>
476 <indexterm zone="ch-system-util-linux-ng mkfs">
477 <primary sortas="b-mkfs">mkfs</primary>
478 </indexterm>
479 </listitem>
480 </varlistentry>
481
482 <varlistentry id="mkfs.bfs">
483 <term><command>mkfs.bfs</command></term>
484 <listitem>
485 <para>Creates a Santa Cruz Operations (SCO) bfs file system</para>
486 <indexterm zone="ch-system-util-linux-ng mkfs.bfs">
487 <primary sortas="b-mkfs.bfs">mkfs.bfs</primary>
488 </indexterm>
489 </listitem>
490 </varlistentry>
491
492 <varlistentry id="mkfs.cramfs">
493 <term><command>mkfs.cramfs</command></term>
494 <listitem>
495 <para>Creates a cramfs file system</para>
496 <indexterm zone="ch-system-util-linux-ng mkfs.cramfs">
497 <primary sortas="b-mkfs.cramfs">mkfs.cramfs</primary>
498 </indexterm>
499 </listitem>
500 </varlistentry>
501
502 <varlistentry id="mkfs.minix">
503 <term><command>mkfs.minix</command></term>
504 <listitem>
505 <para>Creates a Minix file system</para>
506 <indexterm zone="ch-system-util-linux-ng mkfs.minix">
507 <primary sortas="b-mkfs.minix">mkfs.minix</primary>
508 </indexterm>
509 </listitem>
510 </varlistentry>
511
512 <varlistentry id="mkswap">
513 <term><command>mkswap</command></term>
514 <listitem>
515 <para>Initializes the given device or file to be used as a swap
516 area</para>
517 <indexterm zone="ch-system-util-linux-ng mkswap">
518 <primary sortas="b-mkswap">mkswap</primary>
519 </indexterm>
520 </listitem>
521 </varlistentry>
522
523 <varlistentry id="more">
524 <term><command>more</command></term>
525 <listitem>
526 <para>A filter for paging through text one screen at a time</para>
527 <indexterm zone="ch-system-util-linux-ng more">
528 <primary sortas="b-more">more</primary>
529 </indexterm>
530 </listitem>
531 </varlistentry>
532
533 <varlistentry id="mount">
534 <term><command>mount</command></term>
535 <listitem>
536 <para>Attaches the file system on the given device to a specified
537 directory in the file-system tree</para>
538 <indexterm zone="ch-system-util-linux-ng mount">
539 <primary sortas="b-mount">mount</primary>
540 </indexterm>
541 </listitem>
542 </varlistentry>
543
544 <varlistentry id="namei">
545 <term><command>namei</command></term>
546 <listitem>
547 <para>Shows the symbolic links in the given pathnames</para>
548 <indexterm zone="ch-system-util-linux-ng namei">
549 <primary sortas="b-namei">namei</primary>
550 </indexterm>
551 </listitem>
552 </varlistentry>
553
554 <varlistentry id="partx">
555 <term><command>partx</command></term>
556 <listitem>
557 <para>Tells the kernel about the presence and numbering of on-disk
558 partitions</para>
559 <indexterm zone="ch-system-util-linux-ng partx">
560 <primary sortas="b-partx">partx</primary>
561 </indexterm>
562 </listitem>
563 </varlistentry>
564
565 <varlistentry id="pg">
566 <term><command>pg</command></term>
567 <listitem>
568 <para>Displays a text file one screen full at a time</para>
569 <indexterm zone="ch-system-util-linux-ng pg">
570 <primary sortas="b-pg">pg</primary>
571 </indexterm>
572 </listitem>
573 </varlistentry>
574
575 <varlistentry id="pivot_root">
576 <term><command>pivot_root</command></term>
577 <listitem>
578 <para>Makes the given file system the new root file system of the
579 current process</para>
580 <indexterm zone="ch-system-util-linux-ng pivot_root">
581 <primary sortas="b-pivot_root">pivot_root</primary>
582 </indexterm>
583 </listitem>
584 </varlistentry>
585
586 <varlistentry id="readprofile">
587 <term><command>readprofile</command></term>
588 <listitem>
589 <para>Reads kernel profiling information</para>
590 <indexterm zone="ch-system-util-linux-ng readprofile">
591 <primary sortas="b-readprofile">readprofile</primary>
592 </indexterm>
593 </listitem>
594 </varlistentry>
595
596 <varlistentry id="rename">
597 <term><command>rename</command></term>
598 <listitem>
599 <para>Renames the given files, replacing a given string with
600 another</para>
601 <indexterm zone="ch-system-util-linux-ng rename">
602 <primary sortas="b-rename">rename</primary>
603 </indexterm>
604 </listitem>
605 </varlistentry>
606
607 <varlistentry id="renice">
608 <term><command>renice</command></term>
609 <listitem>
610 <para>Alters the priority of running processes</para>
611 <indexterm zone="ch-system-util-linux-ng renice">
612 <primary sortas="b-renice">renice</primary>
613 </indexterm>
614 </listitem>
615 </varlistentry>
616
617 <varlistentry id="rev">
618 <term><command>rev</command></term>
619 <listitem>
620 <para>Reverses the lines of a given file</para>
621 <indexterm zone="ch-system-util-linux-ng rev">
622 <primary sortas="b-rev">rev</primary>
623 </indexterm>
624 </listitem>
625 </varlistentry>
626
627 <varlistentry id="rtcwake">
628 <term><command>rtcwake</command></term>
629 <listitem>
630 <para>Enters a system sleep state until a specified wakeup time</para>
631 <indexterm zone="ch-system-util-linux-ng rtcwake">
632 <primary sortas="b-rtcwake">rtcwake</primary>
633 </indexterm>
634 </listitem>
635 </varlistentry>
636
637 <varlistentry id="script">
638 <term><command>script</command></term>
639 <listitem>
640 <para>Makes a typescript of a terminal session</para>
641 <indexterm zone="ch-system-util-linux-ng script">
642 <primary sortas="b-script">script</primary>
643 </indexterm>
644 </listitem>
645 </varlistentry>
646
647 <varlistentry id="scriptreplay">
648 <term><command>scriptreplay</command></term>
649 <listitem>
650 <para>Plays back typescripts created by <command>script</command></para>
651 <indexterm zone="ch-system-util-linux-ng scriptreplay">
652 <primary sortas="b-scriptreplay">scriptreplay</primary>
653 </indexterm>
654 </listitem>
655 </varlistentry>
656
657 <varlistentry id="setarch">
658 <term><command>setarch</command></term>
659 <listitem>
660 <para>Changes reported architecture in new program environment and
661 sets personality flags</para>
662 <indexterm zone="ch-system-util-linux-ng setarch">
663 <primary sortas="b-setarch">setarch</primary>
664 </indexterm>
665 </listitem>
666 </varlistentry>
667
668 <varlistentry id="setsid">
669 <term><command>setsid</command></term>
670 <listitem>
671 <para>Runs the given program in a new session</para>
672 <indexterm zone="ch-system-util-linux-ng setsid">
673 <primary sortas="b-setsid">setsid</primary>
674 </indexterm>
675 </listitem>
676 </varlistentry>
677
678 <varlistentry id="setterm">
679 <term><command>setterm</command></term>
680 <listitem>
681 <para>Sets terminal attributes</para>
682 <indexterm zone="ch-system-util-linux-ng setterm">
683 <primary sortas="b-setterm">setterm</primary>
684 </indexterm>
685 </listitem>
686 </varlistentry>
687
688 <varlistentry id="sfdisk">
689 <term><command>sfdisk</command></term>
690 <listitem>
691 <para>A disk partition table manipulator</para>
692 <indexterm zone="ch-system-util-linux-ng sfdisk">
693 <primary sortas="b-sfdisk">sfdisk</primary>
694 </indexterm>
695 </listitem>
696 </varlistentry>
697
698 <varlistentry id="swapoff">
699 <term><command>swapoff</command></term>
700 <listitem>
701 <para>Disables devices and files for paging and swapping</para>
702 <indexterm zone="ch-system-util-linux-ng swapoff">
703 <primary sortas="b-swapoff">swapoff</primary>
704 </indexterm>
705 </listitem>
706 </varlistentry>
707
708 <varlistentry id="swapon">
709 <term><command>swapon</command></term>
710 <listitem>
711 <para>Enables devices and files for paging and swapping and
712 lists the devices and files currently in use</para>
713 <indexterm zone="ch-system-util-linux-ng swapon">
714 <primary sortas="b-swapon">swapon</primary>
715 </indexterm>
716 </listitem>
717 </varlistentry>
718
719 <varlistentry id="tailf">
720 <term><command>tailf</command></term>
721 <listitem>
722 <para>Tracks the growth of a log file. Displays the last 10 lines
723 of a log file, then continues displaying any new entries in the
724 log file as they are created</para>
725 <indexterm zone="ch-system-util-linux-ng tailf">
726 <primary sortas="b-tailf">tailf</primary>
727 </indexterm>
728 </listitem>
729 </varlistentry>
730
731 <varlistentry id="taskset">
732 <term><command>taskset</command></term>
733 <listitem>
734 <para>Retrieves or sets a process's CPU affinity</para>
735 <indexterm zone="ch-system-util-linux-ng taskset">
736 <primary sortas="b-taskset">taskset</primary>
737 </indexterm>
738 </listitem>
739 </varlistentry>
740
741 <varlistentry id="tunelp">
742 <term><command>tunelp</command></term>
743 <listitem>
744 <para>Tunes the parameters of the line printer</para>
745 <indexterm zone="ch-system-util-linux-ng tunelp">
746 <primary sortas="b-tunelp">tunelp</primary>
747 </indexterm>
748 </listitem>
749 </varlistentry>
750
751 <varlistentry id="ul">
752 <term><command>ul</command></term>
753 <listitem>
754 <para>A filter for translating underscores into escape sequences
755 indicating underlining for the terminal in use</para>
756 <indexterm zone="ch-system-util-linux-ng ul">
757 <primary sortas="b-ul">ul</primary>
758 </indexterm>
759 </listitem>
760 </varlistentry>
761
762 <varlistentry id="umount">
763 <term><command>umount</command></term>
764 <listitem>
765 <para>Disconnects a file system from the system's file tree</para>
766 <indexterm zone="ch-system-util-linux-ng umount">
767 <primary sortas="b-umount">umount</primary>
768 </indexterm>
769 </listitem>
770 </varlistentry>
771
772 <varlistentry id="whereis">
773 <term><command>whereis</command></term>
774 <listitem>
775 <para>Reports the location of the binary, source, and man page
776 for the given command</para>
777 <indexterm zone="ch-system-util-linux-ng whereis">
778 <primary sortas="b-whereis">whereis</primary>
779 </indexterm>
780 </listitem>
781 </varlistentry>
782
783 <varlistentry id="write">
784 <term><command>write</command></term>
785 <listitem>
786 <para>Sends a message to the given user <emphasis>if</emphasis> that
787 user has not disabled receipt of such messages</para>
788 <indexterm zone="ch-system-util-linux-ng write">
789 <primary sortas="b-write">write</primary>
790 </indexterm>
791 </listitem>
792 </varlistentry>
793
794 </variablelist>
795
796 </sect2>
797
798</sect1>
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