source: BOOK/final-system/common/util-linux.xml@ 4232f0e

clfs-1.2 clfs-2.1 clfs-3.0.0-systemd clfs-3.0.0-sysvinit systemd sysvinit
Last change on this file since 4232f0e was c331850, checked in by Chris Staub <chris@…>, 18 years ago

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[3f8be484]1<?xml version="1.0" encoding="ISO-8859-1"?>
[aa18ac0]2<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
3 "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
[3f8be484]4 <!ENTITY % general-entities SYSTEM "../../general.ent">
5 %general-entities;
6]>
7
8<sect1 id="ch-system-util-linux" role="wrap">
9 <?dbhtml filename="util-linux.html"?>
10
11 <title>Util-linux-&util-linux-version;</title>
12
13 <indexterm zone="ch-system-util-linux">
14 <primary sortas="a-Util-linux">Util-linux</primary>
15 </indexterm>
16
17 <sect2 role="package">
18 <title/>
19
20 <para>The Util-linux 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" 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
[a40edab]38mkdir -pv /var/lib/hwclock</userinput></screen>
[3f8be484]39
40 </sect2>
41
42 <sect2 role="installation">
43 <title>Installation of Util-linux</title>
44
[e0e40d3]45 <para os="p1">Util-linux fails to compile against newer versions of
[4f049972]46 Linux kernel headers. The following patch properly fixes this issue:</para>
[3f8be484]47
[e0e40d3]48<screen os="p2"><userinput>patch -Np1 -i ../&util-linux-cramfs-patch;</userinput></screen>
[3f8be484]49
[c19067a]50 <para os="p3">The following patch fixes build issues with the changes to the Linux 2.6.18
51 headers:</para>
[3f8be484]52
[c19067a]53<screen os="p4"><userinput>patch -Np1 -i ../&util-linux-syscall_fixes-patch;</userinput></screen>
[3f8be484]54
[cc1ccdd]55 <para os="p5">The following patch fixes swapon.c - it tries to find the variable R_OK, but
[480f54b]56 the header that has R_OK is not included:</para>
57
58<screen os="p6"><userinput>patch -Np1 -i ../&util-linux-missing_header-patch;</userinput></screen>
59
[c331850]60 <para os="p7">Due to a change in headers some of Util-linux will not build.
61 This patch will change the utilization of llseek to lseek. This fix has
62 been applied to the development version of Util-linux:</para>
[d67c60d0]63
64<screen os="p8"><userinput>patch -Np1 -i ../&util-linux-lseek-patch;</userinput></screen>
65
[e0e40d3]66 <para os="a">Prepare Util-linux for compilation:</para>
[3f8be484]67
[e0e40d3]68<screen os="b"><userinput>./configure</userinput></screen>
[3f8be484]69
[e0e40d3]70 <para os="c">Compile the package:</para>
[3f8be484]71
[e0e40d3]72<screen os="d"><userinput>make HAVE_KILL=yes HAVE_SLN=yes</userinput></screen>
[3f8be484]73
[e0e40d3]74 <variablelist os="e">
[3f8be484]75 <title>The meaning of the make parameters:</title>
76
[e0e40d3]77 <varlistentry os="e1">
[3f8be484]78 <term><parameter>HAVE_KILL=yes</parameter></term>
79 <listitem>
80 <para>This prevents the <command>kill</command> program (already
81 installed by Procps) from being built and installed again.</para>
82 </listitem>
83 </varlistentry>
84
[e0e40d3]85 <varlistentry os="e2">
[3f8be484]86 <term><parameter>HAVE_SLN=yes</parameter></term>
87 <listitem>
88 <para>This prevents the <command>sln</command> program (a
89 statically linked version of <command>ln</command> already installed
90 by Glibc) from being built and installed again.</para>
91 </listitem>
92 </varlistentry>
93
94 </variablelist>
95
[e0e40d3]96 <para os="f">This package does not come with a test suite.</para>
[3f8be484]97
[e0e40d3]98 <para os="g">Install the package and move the <command>logger</command> binary
[3f8be484]99 to <filename class="directory">/bin</filename> as it is needed by the
[fb40919]100 CLFS-Bootscripts package:</para>
[3f8be484]101
[e0e40d3]102<screen os="h"><userinput>make HAVE_KILL=yes HAVE_SLN=yes install
[6c4e93e]103mv -v /usr/bin/logger /bin</userinput></screen>
[3f8be484]104
105 </sect2>
106
107 <sect2 id="contents-util-linux" role="content">
108 <title>Contents of Util-linux</title>
109
110 <segmentedlist>
111 <segtitle>Installed programs</segtitle>
112
113 <seglistitem>
114 <seg>agetty, arch, blockdev, cal, cfdisk, chkdupexe, col, colcrt,
115 colrm, column, ctrlaltdel, cytune, ddate, dmesg, elvtune, fdformat,
[e29fb58]116 fdisk, flock, fsck.cramfs, fsck.minix, getopt, hexdump, hwclock, ipcrm,
[3f8be484]117 ipcs, isosize, line, logger, look, losetup, mcookie, mkfs, mkfs.bfs,
118 mkfs.cramfs, mkfs.minix, mkswap, more, mount, namei, pg, pivot_root,
119 ramsize (link to rdev), raw, rdev, readprofile, rename, renice, rev,
120 rootflags (link to rdev), script, setfdprm, setsid, setterm, sfdisk,
[e29fb58]121 swapoff (link to swapon), swapon, tailf, tunelp, ul, umount, vidmode
[3f8be484]122 (link to rdev), whereis, and write</seg>
123 </seglistitem>
124 </segmentedlist>
125
126 <variablelist>
127 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
128 <?dbfo list-presentation="list"?>
129 <?dbhtml list-presentation="table"?>
130
131 <varlistentry id="agetty">
132 <term><command>agetty</command></term>
133 <listitem>
134 <para>Opens a tty port, prompts for a login name,
135 and then invokes the <command>login</command> program</para>
136 <indexterm zone="ch-system-util-linux agetty">
137 <primary sortas="b-agetty">agetty</primary>
138 </indexterm>
139 </listitem>
140 </varlistentry>
141
142 <varlistentry id="arch">
143 <term><command>arch</command></term>
144 <listitem>
145 <para>Reports the machine's architecture</para>
146 <indexterm zone="ch-system-util-linux arch">
147 <primary sortas="b-arch">arch</primary>
148 </indexterm>
149 </listitem>
150 </varlistentry>
151
152 <varlistentry id="blockdev">
153 <term><command>blockdev</command></term>
154 <listitem>
155 <para>Allows users to call block device ioctls from the command
156 line</para>
157 <indexterm zone="ch-system-util-linux blockdev">
158 <primary sortas="b-blockdev">blockdev</primary>
159 </indexterm>
160 </listitem>
161 </varlistentry>
162
163 <varlistentry id="cal">
164 <term><command>cal</command></term>
165 <listitem>
166 <para>Displays a simple calendar</para>
167 <indexterm zone="ch-system-util-linux cal">
168 <primary sortas="b-cal">cal</primary>
169 </indexterm>
170 </listitem>
171 </varlistentry>
172
173 <varlistentry id="cfdisk">
174 <term><command>cfdisk</command></term>
175 <listitem>
176 <para>Manipulates the partition table of the given device</para>
177 <indexterm zone="ch-system-util-linux cfdisk">
178 <primary sortas="b-cfdisk">cfdisk</primary>
179 </indexterm>
180 </listitem>
181 </varlistentry>
182
183 <varlistentry id="chkdupexe">
184 <term><command>chkdupexe</command></term>
185 <listitem>
186 <para>Finds duplicate executables</para>
187 <indexterm zone="ch-system-util-linux chkdupexe">
188 <primary sortas="b-chkdupexe">chkdupexe</primary>
189 </indexterm>
190 </listitem>
191 </varlistentry>
192
193 <varlistentry id="col">
194 <term><command>col</command></term>
195 <listitem>
196 <para>Filters out reverse line feeds</para>
197 <indexterm zone="ch-system-util-linux col">
198 <primary sortas="b-col">col</primary>
199 </indexterm>
200 </listitem>
201 </varlistentry>
202
203 <varlistentry id="colcrt">
204 <term><command>colcrt</command></term>
205 <listitem>
206 <para>Filters <command>nroff</command> output for terminals
207 that lack some capabilities, such as overstriking and half-lines</para>
208 <indexterm zone="ch-system-util-linux colcrt">
209 <primary sortas="b-colcrt">colcrt</primary>
210 </indexterm>
211 </listitem>
212 </varlistentry>
213
214 <varlistentry id="colrm">
215 <term><command>colrm</command></term>
216 <listitem>
217 <para>Filters out the given columns</para>
218 <indexterm zone="ch-system-util-linux colrm">
219 <primary sortas="b-colrm">colrm</primary>
220 </indexterm>
221 </listitem>
222 </varlistentry>
223
224 <varlistentry id="column">
225 <term><command>column</command></term>
226 <listitem>
227 <para>Formats a given file into multiple columns</para>
228 <indexterm zone="ch-system-util-linux column">
229 <primary sortas="b-column">column</primary>
230 </indexterm>
231 </listitem>
232 </varlistentry>
233
234 <varlistentry id="ctrlaltdel">
235 <term><command>ctrlaltdel</command></term>
236 <listitem>
237 <para>Sets the function of the Ctrl+Alt+Del key combination to a
238 hard or a soft reset</para>
239 <indexterm zone="ch-system-util-linux ctrlaltdel">
240 <primary sortas="b-ctrlaltdel">ctrlaltdel</primary>
241 </indexterm>
242 </listitem>
243 </varlistentry>
244
245 <varlistentry id="cytune">
246 <term><command>cytune</command></term>
247 <listitem>
248 <para>Tunes the parameters of the serial line drivers for
249 Cyclades cards</para>
250 <indexterm zone="ch-system-util-linux cytune">
251 <primary sortas="b-cytune">cytune</primary>
252 </indexterm>
253 </listitem>
254 </varlistentry>
255
256 <varlistentry id="ddate">
257 <term><command>ddate</command></term>
258 <listitem>
259 <para>Gives the Discordian date or converts the given Gregorian date
260 to a Discordian one</para>
261 <indexterm zone="ch-system-util-linux ddate">
262 <primary sortas="b-ddate">ddate</primary>
263 </indexterm>
264 </listitem>
265 </varlistentry>
266
267 <varlistentry id="dmesg">
268 <term><command>dmesg</command></term>
269 <listitem>
270 <para>Dumps the kernel boot messages</para>
271 <indexterm zone="ch-system-util-linux dmesg">
272 <primary sortas="b-dmesg">dmesg</primary>
273 </indexterm>
274 </listitem>
275 </varlistentry>
276
277 <varlistentry id="elvtune">
278 <term><command>elvtune</command></term>
279 <listitem>
280 <para>Tunes the performance and interactivity of a block
281 device</para>
282 <indexterm zone="ch-system-util-linux elvtune">
283 <primary sortas="b-elvtune">elvtune</primary>
284 </indexterm>
285 </listitem>
286 </varlistentry>
287
288 <varlistentry id="fdformat">
289 <term><command>fdformat</command></term>
290 <listitem>
291 <para>Low-level formats a floppy disk</para>
292 <indexterm zone="ch-system-util-linux fdformat">
293 <primary sortas="b-fdformat">fdformat</primary>
294 </indexterm>
295 </listitem>
296 </varlistentry>
297
298 <varlistentry id="fdisk">
299 <term><command>fdisk</command></term>
300 <listitem>
301 <para>Manipulates the partition table of the given device</para>
302 <indexterm zone="ch-system-util-linux fdisk">
303 <primary sortas="b-fdisk">fdisk</primary>
304 </indexterm>
305 </listitem>
306 </varlistentry>
307
[e29fb58]308 <varlistentry id="flock">
309 <term><command>flock</command></term>
310 <listitem>
311 <para>Acquires a file lock and then executes a command with the lock
312 held</para>
313 <indexterm zone="ch-system-util-linux flock">
314 <primary sortas="b-flock">flock</primary>
315 </indexterm>
316 </listitem>
317 </varlistentry>
318
[3f8be484]319 <varlistentry id="fsck.cramfs">
320 <term><command>fsck.cramfs</command></term>
321 <listitem>
322 <para>Performs a consistency check on the Cramfs file system on the
323 given device</para>
324 <indexterm zone="ch-system-util-linux fsck.cramfs">
325 <primary sortas="b-fsck.cramfs">fsck.cramfs</primary>
326 </indexterm>
327 </listitem>
328 </varlistentry>
329
330 <varlistentry id="fsck.minix">
331 <term><command>fsck.minix</command></term>
332 <listitem>
333 <para>Performs a consistency check on the Minix file system on the
334 given device</para>
335 <indexterm zone="ch-system-util-linux fsck.minix">
336 <primary sortas="b-fsck.minix">fsck.minix</primary>
337 </indexterm>
338 </listitem>
339 </varlistentry>
340
341 <varlistentry id="getopt">
342 <term><command>getopt</command></term>
343 <listitem>
344 <para>Parses options in the given command line</para>
345 <indexterm zone="ch-system-util-linux getopt">
346 <primary sortas="b-getopt">getopt</primary>
347 </indexterm>
348 </listitem>
349 </varlistentry>
350
351 <varlistentry id="hexdump">
352 <term><command>hexdump</command></term>
353 <listitem>
354 <para>Dumps the given file in hexadecimal or in another given
355 format</para>
356 <indexterm zone="ch-system-util-linux hexdump">
357 <primary sortas="b-hexdump">hexdump</primary>
358 </indexterm>
359 </listitem>
360 </varlistentry>
361
362 <varlistentry id="hwclock">
363 <term><command>hwclock</command></term>
364 <listitem>
365 <para>Reads or sets the system's hardware clock, also called
366 the Real-Time Clock (RTC) or Basic Input-Output System (BIOS)
367 clock</para>
368 <indexterm zone="ch-system-util-linux hwclock">
369 <primary sortas="b-hwclock">hwclock</primary>
370 </indexterm>
371 </listitem>
372 </varlistentry>
373
374 <varlistentry id="ipcrm">
375 <term><command>ipcrm</command></term>
376 <listitem>
377 <para>Removes the given Inter-Process Communication (IPC) resource</para>
378 <indexterm zone="ch-system-util-linux ipcrm">
379 <primary sortas="b-ipcrm">ipcrm</primary>
380 </indexterm>
381 </listitem>
382 </varlistentry>
383
384 <varlistentry id="ipcs">
385 <term><command>ipcs</command></term>
386 <listitem>
387 <para>Provides IPC status information</para>
388 <indexterm zone="ch-system-util-linux ipcs">
389 <primary sortas="b-ipcs">ipcs</primary>
390 </indexterm>
391 </listitem>
392 </varlistentry>
393
394 <varlistentry id="isosize">
395 <term><command>isosize</command></term>
396 <listitem>
397 <para>Reports the size of an iso9660 file system</para>
398 <indexterm zone="ch-system-util-linux isosize">
399 <primary sortas="b-isosize">isosize</primary>
400 </indexterm>
401 </listitem>
402 </varlistentry>
403
404 <varlistentry id="line">
405 <term><command>line</command></term>
406 <listitem>
407 <para>Copies a single line</para>
408 <indexterm zone="ch-system-util-linux line">
409 <primary sortas="b-line">line</primary>
410 </indexterm>
411 </listitem>
412 </varlistentry>
413
414 <varlistentry id="logger">
415 <term><command>logger</command></term>
416 <listitem>
417 <para>Enters the given message into the system log</para>
418 <indexterm zone="ch-system-util-linux logger">
419 <primary sortas="b-logger">logger</primary>
420 </indexterm>
421 </listitem>
422 </varlistentry>
423
424 <varlistentry id="look">
425 <term><command>look</command></term>
426 <listitem>
427 <para>Displays lines that begin with the given string</para>
428 <indexterm zone="ch-system-util-linux look">
429 <primary sortas="b-look">look</primary>
430 </indexterm>
431 </listitem>
432 </varlistentry>
433
434 <varlistentry id="losetup">
435 <term><command>losetup</command></term>
436 <listitem>
437 <para>Sets up and controls loop devices</para>
438 <indexterm zone="ch-system-util-linux losetup">
439 <primary sortas="b-losetup">losetup</primary>
440 </indexterm>
441 </listitem>
442 </varlistentry>
443
444 <varlistentry id="mcookie">
445 <term><command>mcookie</command></term>
446 <listitem>
447 <para>Generates magic cookies (128-bit random hexadecimal numbers) for
448 <command>xauth</command></para>
449 <indexterm zone="ch-system-util-linux mcookie">
450 <primary sortas="b-mcookie">mcookie</primary>
451 </indexterm>
452 </listitem>
453 </varlistentry>
454
455 <varlistentry id="mkfs">
456 <term><command>mkfs</command></term>
457 <listitem>
458 <para>Builds a file system on a device (usually a hard disk
459 partition)</para>
460 <indexterm zone="ch-system-util-linux mkfs">
461 <primary sortas="b-mkfs">mkfs</primary>
462 </indexterm>
463 </listitem>
464 </varlistentry>
465
466 <varlistentry id="mkfs.bfs">
467 <term><command>mkfs.bfs</command></term>
468 <listitem>
469 <para>Creates a Santa Cruz Operations (SCO) bfs file system</para>
470 <indexterm zone="ch-system-util-linux mkfs.bfs">
471 <primary sortas="b-mkfs.bfs">mkfs.bfs</primary>
472 </indexterm>
473 </listitem>
474 </varlistentry>
475
476 <varlistentry id="mkfs.cramfs">
477 <term><command>mkfs.cramfs</command></term>
478 <listitem>
479 <para>Creates a cramfs file system</para>
480 <indexterm zone="ch-system-util-linux mkfs.cramfs">
481 <primary sortas="b-mkfs.cramfs">mkfs.cramfs</primary>
482 </indexterm>
483 </listitem>
484 </varlistentry>
485
486 <varlistentry id="mkfs.minix">
487 <term><command>mkfs.minix</command></term>
488 <listitem>
489 <para>Creates a Minix file system</para>
490 <indexterm zone="ch-system-util-linux mkfs.minix">
491 <primary sortas="b-mkfs.minix">mkfs.minix</primary>
492 </indexterm>
493 </listitem>
494 </varlistentry>
495
496 <varlistentry id="mkswap">
497 <term><command>mkswap</command></term>
498 <listitem>
499 <para>Initializes the given device or file to be used as a swap
500 area</para>
501 <indexterm zone="ch-system-util-linux mkswap">
502 <primary sortas="b-mkswap">mkswap</primary>
503 </indexterm>
504 </listitem>
505 </varlistentry>
506
507 <varlistentry id="more">
508 <term><command>more</command></term>
509 <listitem>
510 <para>A filter for paging through text one screen at a time</para>
511 <indexterm zone="ch-system-util-linux more">
512 <primary sortas="b-more">more</primary>
513 </indexterm>
514 </listitem>
515 </varlistentry>
516
517 <varlistentry id="mount">
518 <term><command>mount</command></term>
519 <listitem>
520 <para>Attaches the file system on the given device to a specified
521 directory in the file-system tree</para>
522 <indexterm zone="ch-system-util-linux mount">
523 <primary sortas="b-mount">mount</primary>
524 </indexterm>
525 </listitem>
526 </varlistentry>
527
528 <varlistentry id="namei">
529 <term><command>namei</command></term>
530 <listitem>
531 <para>Shows the symbolic links in the given pathnames</para>
532 <indexterm zone="ch-system-util-linux namei">
533 <primary sortas="b-namei">namei</primary>
534 </indexterm>
535 </listitem>
536 </varlistentry>
537
538 <varlistentry id="pg">
539 <term><command>pg</command></term>
540 <listitem>
541 <para>Displays a text file one screen full at a time</para>
542 <indexterm zone="ch-system-util-linux pg">
543 <primary sortas="b-pg">pg</primary>
544 </indexterm>
545 </listitem>
546 </varlistentry>
547
548 <varlistentry id="pivot_root">
549 <term><command>pivot_root</command></term>
550 <listitem>
551 <para>Makes the given file system the new root file system of the
552 current process</para>
553 <indexterm zone="ch-system-util-linux pivot_root">
554 <primary sortas="b-pivot_root">pivot_root</primary>
555 </indexterm>
556 </listitem>
557 </varlistentry>
558
559 <varlistentry id="ramsize">
560 <term><command>ramsize</command></term>
561 <listitem>
562 <para>Sets the size of the RAM disk in a bootable image</para>
563 <indexterm zone="ch-system-util-linux ramsize">
564 <primary sortas="b-ramsize">ramsize</primary>
565 </indexterm>
566 </listitem>
567 </varlistentry>
568
569 <varlistentry id="raw">
570 <term><command>raw</command></term>
571 <listitem>
572 <para>Used to bind a Linux raw character device to a block
573 device</para>
574 <indexterm zone="ch-system-util-linux raw">
575 <primary sortas="b-raw">raw</primary>
576 </indexterm>
577 </listitem>
578 </varlistentry>
579
580 <varlistentry id="rdev">
581 <term><command>rdev</command></term>
582 <listitem>
583 <para>Queries and sets the root device, among other things, in a
584 bootable image</para>
585 <indexterm zone="ch-system-util-linux rdev">
586 <primary sortas="b-rdev">rdev</primary>
587 </indexterm>
588 </listitem>
589 </varlistentry>
590
591 <varlistentry id="readprofile">
592 <term><command>readprofile</command></term>
593 <listitem>
594 <para>Reads kernel profiling information</para>
595 <indexterm zone="ch-system-util-linux readprofile">
596 <primary sortas="b-readprofile">readprofile</primary>
597 </indexterm>
598 </listitem>
599 </varlistentry>
600
601 <varlistentry id="rename">
602 <term><command>rename</command></term>
603 <listitem>
604 <para>Renames the given files, replacing a given string with
605 another</para>
606 <indexterm zone="ch-system-util-linux rename">
607 <primary sortas="b-rename">rename</primary>
608 </indexterm>
609 </listitem>
610 </varlistentry>
611
612 <varlistentry id="renice">
613 <term><command>renice</command></term>
614 <listitem>
615 <para>Alters the priority of running processes</para>
616 <indexterm zone="ch-system-util-linux renice">
617 <primary sortas="b-renice">renice</primary>
618 </indexterm>
619 </listitem>
620 </varlistentry>
621
622 <varlistentry id="rev">
623 <term><command>rev</command></term>
624 <listitem>
625 <para>Reverses the lines of a given file</para>
626 <indexterm zone="ch-system-util-linux rev">
627 <primary sortas="b-rev">rev</primary>
628 </indexterm>
629 </listitem>
630 </varlistentry>
631
632 <varlistentry id="rootflags">
633 <term><command>rootflags</command></term>
634 <listitem>
635 <para>Sets the rootflags in a bootable image</para>
636 <indexterm zone="ch-system-util-linux rootflags">
637 <primary sortas="b-rootflags">rootflags</primary>
638 </indexterm>
639 </listitem>
640 </varlistentry>
641
642 <varlistentry id="script">
643 <term><command>script</command></term>
644 <listitem>
645 <para>Makes a typescript of a terminal session</para>
646 <indexterm zone="ch-system-util-linux script">
647 <primary sortas="b-script">script</primary>
648 </indexterm>
649 </listitem>
650 </varlistentry>
651
652 <varlistentry id="setfdprm">
653 <term><command>setfdprm</command></term>
654 <listitem>
655 <para>Sets user-provided floppy disk parameters</para>
656 <indexterm zone="ch-system-util-linux setfdprm">
657 <primary sortas="b-setfdprm">setfdprm</primary>
658 </indexterm>
659 </listitem>
660 </varlistentry>
661
662 <varlistentry id="setsid">
663 <term><command>setsid</command></term>
664 <listitem>
665 <para>Runs the given program in a new session</para>
666 <indexterm zone="ch-system-util-linux setsid">
667 <primary sortas="b-setsid">setsid</primary>
668 </indexterm>
669 </listitem>
670 </varlistentry>
671
672 <varlistentry id="setterm">
673 <term><command>setterm</command></term>
674 <listitem>
675 <para>Sets terminal attributes</para>
676 <indexterm zone="ch-system-util-linux setterm">
677 <primary sortas="b-setterm">setterm</primary>
678 </indexterm>
679 </listitem>
680 </varlistentry>
681
682 <varlistentry id="sfdisk">
683 <term><command>sfdisk</command></term>
684 <listitem>
685 <para>A disk partition table manipulator</para>
686 <indexterm zone="ch-system-util-linux sfdisk">
687 <primary sortas="b-sfdisk">sfdisk</primary>
688 </indexterm>
689 </listitem>
690 </varlistentry>
691
692 <varlistentry id="swapoff">
693 <term><command>swapoff</command></term>
694 <listitem>
695 <para>Disables devices and files for paging and swapping</para>
696 <indexterm zone="ch-system-util-linux swapoff">
697 <primary sortas="b-swapoff">swapoff</primary>
698 </indexterm>
699 </listitem>
700 </varlistentry>
701
702 <varlistentry id="swapon">
703 <term><command>swapon</command></term>
704 <listitem>
705 <para>Enables devices and files for paging and swapping and
706 lists the devices and files currently in use</para>
707 <indexterm zone="ch-system-util-linux swapon">
708 <primary sortas="b-swapon">swapon</primary>
709 </indexterm>
710 </listitem>
711 </varlistentry>
712
[e29fb58]713 <varlistentry id="tailf">
714 <term><command>tailf</command></term>
715 <listitem>
716 <para>Tracks the growth of a log file. Displays the last 10 lines
717 of a log file, then continues displaying any new entries in the
718 log file as they are created</para>
719 <indexterm zone="ch-system-util-linux tailf">
720 <primary sortas="b-tailf">tailf</primary>
721 </indexterm>
722 </listitem>
723 </varlistentry>
724
[3f8be484]725 <varlistentry id="tunelp">
726 <term><command>tunelp</command></term>
727 <listitem>
728 <para>Tunes the parameters of the line printer</para>
729 <indexterm zone="ch-system-util-linux tunelp">
730 <primary sortas="b-tunelp">tunelp</primary>
731 </indexterm>
732 </listitem>
733 </varlistentry>
734
735 <varlistentry id="ul">
736 <term><command>ul</command></term>
737 <listitem>
738 <para>A filter for translating underscores into escape sequences
739 indicating underlining for the terminal in use</para>
740 <indexterm zone="ch-system-util-linux ul">
741 <primary sortas="b-ul">ul</primary>
742 </indexterm>
743 </listitem>
744 </varlistentry>
745
746 <varlistentry id="umount">
747 <term><command>umount</command></term>
748 <listitem>
749 <para>Disconnects a file system from the system's file tree</para>
750 <indexterm zone="ch-system-util-linux umount">
751 <primary sortas="b-umount">umount</primary>
752 </indexterm>
753 </listitem>
754 </varlistentry>
755
756 <varlistentry id="vidmode">
757 <term><command>vidmode</command></term>
758 <listitem>
759 <para>Sets the video mode in a bootable image</para>
760 <indexterm zone="ch-system-util-linux vidmode">
761 <primary sortas="b-vidmode">vidmode</primary>
762 </indexterm>
763 </listitem>
764 </varlistentry>
765
766 <varlistentry id="whereis">
767 <term><command>whereis</command></term>
768 <listitem>
769 <para>Reports the location of the binary, source, and man page
770 for the given command</para>
771 <indexterm zone="ch-system-util-linux whereis">
772 <primary sortas="b-whereis">whereis</primary>
773 </indexterm>
774 </listitem>
775 </varlistentry>
776
777 <varlistentry id="write">
778 <term><command>write</command></term>
779 <listitem>
780 <para>Sends a message to the given user <emphasis>if</emphasis> that
781 user has not disabled receipt of such messages</para>
782 <indexterm zone="ch-system-util-linux write">
783 <primary sortas="b-write">write</primary>
784 </indexterm>
785 </listitem>
786 </varlistentry>
787
788 </variablelist>
789
790 </sect2>
791
792</sect1>
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