source: BOOK/final-system/common/util-linux-ng.xml @ e3196bd

clfs-1.2clfs-2.1clfs-3.0.0-systemdclfs-3.0.0-sysvinitsystemdsysvinit
Last change on this file since e3196bd was e3196bd, checked in by Joe Ciccone <jciccone@…>, 15 years ago

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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  <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, chrt, col,
113        colcrt, colrm, column, ctrlaltdel, cytune, ddate, delpart, dmesg,
114        fdformat, fdisk, flock, fsck.cramfs, fsck.minix, getopt, hexdump,
115        hwclock, ionice, ipcrm, ipcs, isosize, ldattach, line, logger, look,
116        losetup, mcookie, mkfs, mkfs.bfs, mkfs.cramfs, mkfs.minix, mkswap,
117        more, mount, namei, partx, pg, pivot_root, readprofile, rename, renice,
118        rev, rtcwake, script, scriptreplay, setarch, setsid, setterm, sfdisk,
119        swapoff (link to swapon), swapon, tailf, taskset, tunelp, ul, umount,
120        whereis, and write</seg>
121      </seglistitem>
122    </segmentedlist>
123
124    <variablelist>
125      <bridgehead renderas="sect3">Short Descriptions</bridgehead>
126      <?dbfo list-presentation="list"?>
127      <?dbhtml list-presentation="table"?>
128
129      <varlistentry id="addpart">
130        <term><command>addpart</command></term>
131        <listitem>
132          <para>Informs the kernel of a new partition</para>
133          <indexterm zone="ch-system-util-linux-ng addpart">
134            <primary sortas="b-addpart">addpart</primary>
135          </indexterm>
136        </listitem>
137      </varlistentry>
138
139      <varlistentry id="agetty">
140        <term><command>agetty</command></term>
141        <listitem>
142          <para>Opens a tty port, prompts for a login name,
143          and then invokes the <command>login</command> program</para>
144          <indexterm zone="ch-system-util-linux-ng agetty">
145            <primary sortas="b-agetty">agetty</primary>
146          </indexterm>
147        </listitem>
148      </varlistentry>
149
150      <varlistentry id="blockdev">
151        <term><command>blockdev</command></term>
152        <listitem>
153          <para>Allows users to call block device ioctls from the command
154          line</para>
155          <indexterm zone="ch-system-util-linux-ng blockdev">
156            <primary sortas="b-blockdev">blockdev</primary>
157          </indexterm>
158        </listitem>
159      </varlistentry>
160
161      <varlistentry id="cal">
162        <term><command>cal</command></term>
163        <listitem>
164          <para>Displays a simple calendar</para>
165          <indexterm zone="ch-system-util-linux-ng cal">
166            <primary sortas="b-cal">cal</primary>
167          </indexterm>
168        </listitem>
169      </varlistentry>
170
171      <varlistentry id="cfdisk">
172        <term><command>cfdisk</command></term>
173        <listitem>
174          <para>Manipulates the partition table of the given device</para>
175          <indexterm zone="ch-system-util-linux-ng cfdisk">
176            <primary sortas="b-cfdisk">cfdisk</primary>
177          </indexterm>
178        </listitem>
179      </varlistentry>
180
181      <varlistentry id="chkdupexe">
182        <term><command>chkdupexe</command></term>
183        <listitem>
184          <para>Finds duplicate executables</para>
185          <indexterm zone="ch-system-util-linux-ng chkdupexe">
186            <primary sortas="b-chkdupexe">chkdupexe</primary>
187          </indexterm>
188        </listitem>
189      </varlistentry>
190
191      <varlistentry id="chrt">
192        <term><command>chrt</command></term>
193        <listitem>
194          <para>Manipulates real-time attributes of a process</para>
195          <indexterm zone="ch-system-util-linux-ng chrt">
196            <primary sortas="b-chrt">chrt</primary>
197          </indexterm>
198        </listitem>
199      </varlistentry>
200
201      <varlistentry id="col">
202        <term><command>col</command></term>
203        <listitem>
204          <para>Filters out reverse line feeds</para>
205          <indexterm zone="ch-system-util-linux-ng col">
206            <primary sortas="b-col">col</primary>
207          </indexterm>
208        </listitem>
209      </varlistentry>
210
211      <varlistentry id="colcrt">
212        <term><command>colcrt</command></term>
213        <listitem>
214          <para>Filters <command>nroff</command> output for terminals
215          that lack some capabilities, such as overstriking and half-lines</para>
216          <indexterm zone="ch-system-util-linux-ng colcrt">
217            <primary sortas="b-colcrt">colcrt</primary>
218          </indexterm>
219        </listitem>
220      </varlistentry>
221
222      <varlistentry id="colrm">
223        <term><command>colrm</command></term>
224        <listitem>
225          <para>Filters out the given columns</para>
226          <indexterm zone="ch-system-util-linux-ng colrm">
227            <primary sortas="b-colrm">colrm</primary>
228          </indexterm>
229        </listitem>
230      </varlistentry>
231
232      <varlistentry id="column">
233        <term><command>column</command></term>
234        <listitem>
235          <para>Formats a given file into multiple columns</para>
236          <indexterm zone="ch-system-util-linux-ng column">
237            <primary sortas="b-column">column</primary>
238          </indexterm>
239        </listitem>
240      </varlistentry>
241
242      <varlistentry id="ctrlaltdel">
243        <term><command>ctrlaltdel</command></term>
244        <listitem>
245          <para>Sets the function of the Ctrl+Alt+Del key combination to a
246          hard or a soft reset</para>
247          <indexterm zone="ch-system-util-linux-ng ctrlaltdel">
248            <primary sortas="b-ctrlaltdel">ctrlaltdel</primary>
249          </indexterm>
250        </listitem>
251      </varlistentry>
252
253      <varlistentry id="cytune">
254        <term><command>cytune</command></term>
255        <listitem>
256          <para>Tunes the parameters of the serial line drivers for
257          Cyclades cards</para>
258          <indexterm zone="ch-system-util-linux-ng cytune">
259            <primary sortas="b-cytune">cytune</primary>
260          </indexterm>
261        </listitem>
262      </varlistentry>
263
264      <varlistentry id="ddate">
265        <term><command>ddate</command></term>
266        <listitem>
267          <para>Gives the Discordian date or converts the given Gregorian date
268          to a Discordian one</para>
269          <indexterm zone="ch-system-util-linux-ng ddate">
270            <primary sortas="b-ddate">ddate</primary>
271          </indexterm>
272        </listitem>
273      </varlistentry>
274
275      <varlistentry id="delpart">
276        <term><command>delpart</command></term>
277        <listitem>
278          <para>Asks the kernel to remove a partition</para>
279          <indexterm zone="ch-system-util-linux-ng delpart">
280            <primary sortas="b-delpart">delpart</primary>
281          </indexterm>
282        </listitem>
283      </varlistentry>
284
285      <varlistentry id="dmesg">
286        <term><command>dmesg</command></term>
287        <listitem>
288          <para>Dumps the kernel boot messages</para>
289          <indexterm zone="ch-system-util-linux-ng dmesg">
290            <primary sortas="b-dmesg">dmesg</primary>
291          </indexterm>
292        </listitem>
293      </varlistentry>
294
295      <varlistentry id="fdformat">
296        <term><command>fdformat</command></term>
297        <listitem>
298          <para>Low-level formats a floppy disk</para>
299          <indexterm zone="ch-system-util-linux-ng fdformat">
300            <primary sortas="b-fdformat">fdformat</primary>
301          </indexterm>
302        </listitem>
303      </varlistentry>
304
305      <varlistentry id="fdisk">
306        <term><command>fdisk</command></term>
307        <listitem>
308          <para>Manipulates the partition table of the given device</para>
309          <indexterm zone="ch-system-util-linux-ng fdisk">
310            <primary sortas="b-fdisk">fdisk</primary>
311          </indexterm>
312        </listitem>
313      </varlistentry>
314
315      <varlistentry id="flock">
316        <term><command>flock</command></term>
317        <listitem>
318          <para>Acquires a file lock and then executes a command with the lock
319          held</para>
320          <indexterm zone="ch-system-util-linux-ng flock">
321            <primary sortas="b-flock">flock</primary>
322          </indexterm>
323        </listitem>
324      </varlistentry>
325
326      <varlistentry id="fsck.cramfs">
327        <term><command>fsck.cramfs</command></term>
328        <listitem>
329          <para>Performs a consistency check on the Cramfs file system on the
330          given device</para>
331          <indexterm zone="ch-system-util-linux-ng fsck.cramfs">
332            <primary sortas="b-fsck.cramfs">fsck.cramfs</primary>
333          </indexterm>
334        </listitem>
335      </varlistentry>
336
337      <varlistentry id="fsck.minix">
338        <term><command>fsck.minix</command></term>
339        <listitem>
340          <para>Performs a consistency check on the Minix file system on the
341          given device</para>
342          <indexterm zone="ch-system-util-linux-ng fsck.minix">
343            <primary sortas="b-fsck.minix">fsck.minix</primary>
344          </indexterm>
345        </listitem>
346      </varlistentry>
347
348      <varlistentry id="getopt">
349        <term><command>getopt</command></term>
350        <listitem>
351          <para>Parses options in the given command line</para>
352          <indexterm zone="ch-system-util-linux-ng getopt">
353            <primary sortas="b-getopt">getopt</primary>
354          </indexterm>
355        </listitem>
356      </varlistentry>
357
358      <varlistentry id="hexdump">
359        <term><command>hexdump</command></term>
360        <listitem>
361          <para>Dumps the given file in hexadecimal or in another given
362          format</para>
363          <indexterm zone="ch-system-util-linux-ng hexdump">
364            <primary sortas="b-hexdump">hexdump</primary>
365          </indexterm>
366        </listitem>
367      </varlistentry>
368
369      <varlistentry id="hwclock">
370        <term><command>hwclock</command></term>
371        <listitem>
372          <para>Reads or sets the system's hardware clock, also called
373          the Real-Time Clock (RTC) or Basic Input-Output System (BIOS)
374          clock</para>
375          <indexterm zone="ch-system-util-linux-ng hwclock">
376            <primary sortas="b-hwclock">hwclock</primary>
377          </indexterm>
378        </listitem>
379      </varlistentry>
380
381      <varlistentry id="ionice">
382        <term><command>ionice</command></term>
383        <listitem>
384          <para>Gives and sets program I/O scheduling class and priority</para>
385          <indexterm zone="ch-system-util-linux-ng ionice">
386            <primary sortas="b-ionice">ionice</primary>
387          </indexterm>
388        </listitem>
389      </varlistentry>
390
391      <varlistentry id="ipcrm">
392        <term><command>ipcrm</command></term>
393        <listitem>
394          <para>Removes the given Inter-Process Communication (IPC) resource</para>
395          <indexterm zone="ch-system-util-linux-ng ipcrm">
396            <primary sortas="b-ipcrm">ipcrm</primary>
397          </indexterm>
398        </listitem>
399      </varlistentry>
400
401      <varlistentry id="ipcs">
402        <term><command>ipcs</command></term>
403        <listitem>
404          <para>Provides IPC status information</para>
405          <indexterm zone="ch-system-util-linux-ng ipcs">
406            <primary sortas="b-ipcs">ipcs</primary>
407          </indexterm>
408        </listitem>
409      </varlistentry>
410
411      <varlistentry id="isosize">
412        <term><command>isosize</command></term>
413        <listitem>
414          <para>Reports the size of an iso9660 file system</para>
415          <indexterm zone="ch-system-util-linux-ng isosize">
416            <primary sortas="b-isosize">isosize</primary>
417          </indexterm>
418        </listitem>
419      </varlistentry>
420
421      <varlistentry id="ldattach">
422        <term><command>ldattach</command></term>
423        <listitem>
424          <para>Attaches a line discipline to a serial line</para>
425          <indexterm zone="ch-system-util-linux-ng ldattach">
426            <primary sortas="b-ldattach">ldattach</primary>
427          </indexterm>
428        </listitem>
429      </varlistentry>
430
431      <varlistentry id="line">
432        <term><command>line</command></term>
433        <listitem>
434          <para>Copies a single line</para>
435          <indexterm zone="ch-system-util-linux-ng line">
436            <primary sortas="b-line">line</primary>
437          </indexterm>
438        </listitem>
439      </varlistentry>
440
441      <varlistentry id="logger">
442        <term><command>logger</command></term>
443        <listitem>
444          <para>Enters the given message into the system log</para>
445          <indexterm zone="ch-system-util-linux-ng logger">
446            <primary sortas="b-logger">logger</primary>
447          </indexterm>
448        </listitem>
449      </varlistentry>
450
451      <varlistentry id="look">
452        <term><command>look</command></term>
453        <listitem>
454          <para>Displays lines that begin with the given string</para>
455          <indexterm zone="ch-system-util-linux-ng look">
456            <primary sortas="b-look">look</primary>
457          </indexterm>
458        </listitem>
459      </varlistentry>
460
461      <varlistentry id="losetup">
462        <term><command>losetup</command></term>
463        <listitem>
464          <para>Sets up and controls loop devices</para>
465          <indexterm zone="ch-system-util-linux-ng losetup">
466            <primary sortas="b-losetup">losetup</primary>
467          </indexterm>
468        </listitem>
469      </varlistentry>
470
471      <varlistentry id="mcookie">
472        <term><command>mcookie</command></term>
473        <listitem>
474          <para>Generates magic cookies (128-bit random hexadecimal numbers) for
475          <command>xauth</command></para>
476          <indexterm zone="ch-system-util-linux-ng mcookie">
477            <primary sortas="b-mcookie">mcookie</primary>
478          </indexterm>
479        </listitem>
480      </varlistentry>
481
482      <varlistentry id="mkfs">
483        <term><command>mkfs</command></term>
484        <listitem>
485          <para>Builds a file system on a device (usually a hard disk
486          partition)</para>
487          <indexterm zone="ch-system-util-linux-ng mkfs">
488            <primary sortas="b-mkfs">mkfs</primary>
489          </indexterm>
490        </listitem>
491      </varlistentry>
492
493      <varlistentry id="mkfs.bfs">
494        <term><command>mkfs.bfs</command></term>
495        <listitem>
496          <para>Creates a Santa Cruz Operations (SCO) bfs file system</para>
497          <indexterm zone="ch-system-util-linux-ng mkfs.bfs">
498            <primary sortas="b-mkfs.bfs">mkfs.bfs</primary>
499          </indexterm>
500        </listitem>
501      </varlistentry>
502
503      <varlistentry id="mkfs.cramfs">
504        <term><command>mkfs.cramfs</command></term>
505        <listitem>
506          <para>Creates a cramfs file system</para>
507          <indexterm zone="ch-system-util-linux-ng mkfs.cramfs">
508            <primary sortas="b-mkfs.cramfs">mkfs.cramfs</primary>
509          </indexterm>
510        </listitem>
511      </varlistentry>
512
513      <varlistentry id="mkfs.minix">
514        <term><command>mkfs.minix</command></term>
515        <listitem>
516          <para>Creates a Minix file system</para>
517          <indexterm zone="ch-system-util-linux-ng mkfs.minix">
518            <primary sortas="b-mkfs.minix">mkfs.minix</primary>
519          </indexterm>
520        </listitem>
521      </varlistentry>
522
523      <varlistentry id="mkswap">
524        <term><command>mkswap</command></term>
525        <listitem>
526          <para>Initializes the given device or file to be used as a swap
527          area</para>
528          <indexterm zone="ch-system-util-linux-ng mkswap">
529            <primary sortas="b-mkswap">mkswap</primary>
530          </indexterm>
531        </listitem>
532      </varlistentry>
533
534      <varlistentry id="more">
535        <term><command>more</command></term>
536        <listitem>
537          <para>A filter for paging through text one screen at a time</para>
538          <indexterm zone="ch-system-util-linux-ng more">
539            <primary sortas="b-more">more</primary>
540          </indexterm>
541        </listitem>
542      </varlistentry>
543
544      <varlistentry id="mount">
545        <term><command>mount</command></term>
546        <listitem>
547          <para>Attaches the file system on the given device to a specified
548          directory in the file-system tree</para>
549          <indexterm zone="ch-system-util-linux-ng mount">
550            <primary sortas="b-mount">mount</primary>
551          </indexterm>
552        </listitem>
553      </varlistentry>
554
555      <varlistentry id="namei">
556        <term><command>namei</command></term>
557        <listitem>
558          <para>Shows the symbolic links in the given pathnames</para>
559          <indexterm zone="ch-system-util-linux-ng namei">
560            <primary sortas="b-namei">namei</primary>
561          </indexterm>
562        </listitem>
563      </varlistentry>
564
565      <varlistentry id="partx">
566        <term><command>partx</command></term>
567        <listitem>
568          <para>Tells the kernel about the presence and numbering of on-disk
569          partitions</para>
570          <indexterm zone="ch-system-util-linux-ng partx">
571            <primary sortas="b-partx">partx</primary>
572          </indexterm>
573        </listitem>
574      </varlistentry>
575
576      <varlistentry id="pg">
577        <term><command>pg</command></term>
578        <listitem>
579          <para>Displays a text file one screen full at a time</para>
580          <indexterm zone="ch-system-util-linux-ng pg">
581            <primary sortas="b-pg">pg</primary>
582          </indexterm>
583        </listitem>
584      </varlistentry>
585
586      <varlistentry id="pivot_root">
587        <term><command>pivot_root</command></term>
588        <listitem>
589          <para>Makes the given file system the new root file system of the
590          current process</para>
591          <indexterm zone="ch-system-util-linux-ng pivot_root">
592            <primary sortas="b-pivot_root">pivot_root</primary>
593          </indexterm>
594        </listitem>
595      </varlistentry>
596
597      <varlistentry id="readprofile">
598        <term><command>readprofile</command></term>
599        <listitem>
600          <para>Reads kernel profiling information</para>
601          <indexterm zone="ch-system-util-linux-ng readprofile">
602            <primary sortas="b-readprofile">readprofile</primary>
603          </indexterm>
604        </listitem>
605      </varlistentry>
606
607      <varlistentry id="rename">
608        <term><command>rename</command></term>
609        <listitem>
610          <para>Renames the given files, replacing a given string with
611          another</para>
612          <indexterm zone="ch-system-util-linux-ng rename">
613            <primary sortas="b-rename">rename</primary>
614          </indexterm>
615        </listitem>
616      </varlistentry>
617
618      <varlistentry id="renice">
619        <term><command>renice</command></term>
620        <listitem>
621          <para>Alters the priority of running processes</para>
622          <indexterm zone="ch-system-util-linux-ng renice">
623            <primary sortas="b-renice">renice</primary>
624          </indexterm>
625        </listitem>
626      </varlistentry>
627
628      <varlistentry id="rev">
629        <term><command>rev</command></term>
630        <listitem>
631          <para>Reverses the lines of a given file</para>
632          <indexterm zone="ch-system-util-linux-ng rev">
633            <primary sortas="b-rev">rev</primary>
634          </indexterm>
635        </listitem>
636      </varlistentry>
637
638      <varlistentry id="rtcwake">
639        <term><command>rtcwake</command></term>
640        <listitem>
641          <para>Enters a system sleep state until a specified wakeup time</para>
642          <indexterm zone="ch-system-util-linux-ng rtcwake">
643            <primary sortas="b-rtcwake">rtcwake</primary>
644          </indexterm>
645        </listitem>
646      </varlistentry>
647
648      <varlistentry id="script">
649        <term><command>script</command></term>
650        <listitem>
651          <para>Makes a typescript of a terminal session</para>
652          <indexterm zone="ch-system-util-linux-ng script">
653            <primary sortas="b-script">script</primary>
654          </indexterm>
655        </listitem>
656      </varlistentry>
657
658      <varlistentry id="scriptreplay">
659        <term><command>scriptreplay</command></term>
660        <listitem>
661          <para>Plays back typescripts created by <command>script</command></para>
662          <indexterm zone="ch-system-util-linux-ng scriptreplay">
663            <primary sortas="b-scriptreplay">scriptreplay</primary>
664          </indexterm>
665        </listitem>
666      </varlistentry>
667
668      <varlistentry id="setarch">
669        <term><command>setarch</command></term>
670        <listitem>
671          <para>Changes reported architecture in new program environment and
672          sets personality flags</para>
673          <indexterm zone="ch-system-util-linux-ng setarch">
674            <primary sortas="b-setarch">setarch</primary>
675          </indexterm>
676        </listitem>
677      </varlistentry>
678
679      <varlistentry id="setsid">
680        <term><command>setsid</command></term>
681        <listitem>
682          <para>Runs the given program in a new session</para>
683          <indexterm zone="ch-system-util-linux-ng setsid">
684            <primary sortas="b-setsid">setsid</primary>
685          </indexterm>
686        </listitem>
687      </varlistentry>
688
689      <varlistentry id="setterm">
690        <term><command>setterm</command></term>
691        <listitem>
692          <para>Sets terminal attributes</para>
693          <indexterm zone="ch-system-util-linux-ng setterm">
694            <primary sortas="b-setterm">setterm</primary>
695          </indexterm>
696        </listitem>
697      </varlistentry>
698
699      <varlistentry id="sfdisk">
700        <term><command>sfdisk</command></term>
701        <listitem>
702          <para>A disk partition table manipulator</para>
703          <indexterm zone="ch-system-util-linux-ng sfdisk">
704            <primary sortas="b-sfdisk">sfdisk</primary>
705          </indexterm>
706        </listitem>
707      </varlistentry>
708
709      <varlistentry id="swapoff">
710        <term><command>swapoff</command></term>
711        <listitem>
712          <para>Disables devices and files for paging and swapping</para>
713          <indexterm zone="ch-system-util-linux-ng swapoff">
714            <primary sortas="b-swapoff">swapoff</primary>
715          </indexterm>
716        </listitem>
717      </varlistentry>
718
719      <varlistentry id="swapon">
720        <term><command>swapon</command></term>
721        <listitem>
722          <para>Enables devices and files for paging and swapping and
723          lists the devices and files currently in use</para>
724          <indexterm zone="ch-system-util-linux-ng swapon">
725            <primary sortas="b-swapon">swapon</primary>
726          </indexterm>
727        </listitem>
728      </varlistentry>
729
730      <varlistentry id="tailf">
731        <term><command>tailf</command></term>
732        <listitem>
733          <para>Tracks the growth of a log file. Displays the last 10 lines
734          of a log file, then continues displaying any new entries in the
735          log file as they are created</para>
736          <indexterm zone="ch-system-util-linux-ng tailf">
737            <primary sortas="b-tailf">tailf</primary>
738          </indexterm>
739        </listitem>
740      </varlistentry>
741
742      <varlistentry id="taskset">
743        <term><command>taskset</command></term>
744        <listitem>
745          <para>Retrieves or sets a process's CPU affinity</para>
746          <indexterm zone="ch-system-util-linux-ng taskset">
747            <primary sortas="b-taskset">taskset</primary>
748          </indexterm>
749        </listitem>
750      </varlistentry>
751
752      <varlistentry id="tunelp">
753        <term><command>tunelp</command></term>
754        <listitem>
755          <para>Tunes the parameters of the line printer</para>
756          <indexterm zone="ch-system-util-linux-ng tunelp">
757            <primary sortas="b-tunelp">tunelp</primary>
758          </indexterm>
759        </listitem>
760      </varlistentry>
761
762      <varlistentry id="ul">
763        <term><command>ul</command></term>
764        <listitem>
765          <para>A filter for translating underscores into escape sequences
766          indicating underlining for the terminal in use</para>
767          <indexterm zone="ch-system-util-linux-ng ul">
768            <primary sortas="b-ul">ul</primary>
769          </indexterm>
770        </listitem>
771      </varlistentry>
772
773      <varlistentry id="umount">
774        <term><command>umount</command></term>
775        <listitem>
776          <para>Disconnects a file system from the system's file tree</para>
777          <indexterm zone="ch-system-util-linux-ng umount">
778            <primary sortas="b-umount">umount</primary>
779          </indexterm>
780        </listitem>
781      </varlistentry>
782
783      <varlistentry id="whereis">
784        <term><command>whereis</command></term>
785        <listitem>
786          <para>Reports the location of the binary, source, and man page
787          for the given command</para>
788          <indexterm zone="ch-system-util-linux-ng whereis">
789            <primary sortas="b-whereis">whereis</primary>
790          </indexterm>
791        </listitem>
792      </varlistentry>
793
794      <varlistentry id="write">
795        <term><command>write</command></term>
796        <listitem>
797          <para>Sends a message to the given user <emphasis>if</emphasis> that
798          user has not disabled receipt of such messages</para>
799          <indexterm zone="ch-system-util-linux-ng write">
800            <primary sortas="b-write">write</primary>
801          </indexterm>
802        </listitem>
803      </varlistentry>
804
805    </variablelist>
806
807  </sect2>
808
809</sect1>
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