source: clfs-sysroot/BOOK/final-system/common/util-linux.xml@ f1f6d91

Last change on this file since f1f6d91 was a028a09, checked in by Joe Ciccone <jciccone@…>, 18 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" 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>cp hwclock/hwclock.c{,.orig}
37sed 's@etc/adjtime@var/lib/hwclock/adjtime@g' \
38 hwclock/hwclock.c.orig &gt; hwclock/hwclock.c
39mkdir -pv ${CLFS}/var/lib/hwclock</userinput></screen>
40
41 </sect2>
42
43 <sect2 role="installation">
44 <title>Installation of Util-linux</title>
45
46 <para os="p1">Util-linux fails to compile against newer versions of
47 Linux kernel headers. The following patch properly fixes this issue:</para>
48
49<screen os="p2"><userinput>patch -Np1 -i ../&util-linux-cramfs-patch;</userinput></screen>
50
51 <para os="p3">The following patch fixes build issues the changes to the Linux 2.6.18 headers:</para>
52
53<screen os="p4"><userinput>patch -Np1 -i ../&util-linux-syscall_fixes-patch;</userinput></screen>
54
55 <para os="p5">The following patch fixes swapon.c - it tries to find the
56 variable R_OK, but 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
60 <para os="p7">Due to a change in headers some 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>
63
64<screen os="p8"><userinput>patch -Np1 -i ../&util-linux-lseek-patch;</userinput></screen>
65
66 <para os="s1">The Util-linux installation uses <option>-o root</option>.
67 As we are currently using an unprivileged user, this will not work. The
68 following <command>sed</command> removes it:</para>
69
70<screen os="s2"><userinput>cp MCONFIG{,.orig}
71sed -e "s/-o root//" MCONFIG.orig > MCONFIG</userinput></screen>
72
73 <para os="a">Prepare Util-linux for compilation:</para>
74
75<screen os="b"><userinput>./configure</userinput></screen>
76
77 <para os="c">Compile the package:</para>
78
79<screen os="d"><userinput>make HAVE_KILL=yes HAVE_SLN=yes \
80CPUOPT="" ARCH="" CPU=""</userinput></screen>
81
82 <variablelist os="e">
83 <title>The meaning of the make parameters:</title>
84
85 <varlistentry os="e1">
86 <term><parameter>HAVE_KILL=yes</parameter></term>
87 <listitem>
88 <para>This prevents the <command>kill</command> program (already
89 installed by Procps) from being built and installed again.</para>
90 </listitem>
91 </varlistentry>
92
93 <varlistentry os="e2">
94 <term><parameter>HAVE_SLN=yes</parameter></term>
95 <listitem>
96 <para>This prevents the <command>sln</command> program (a
97 statically linked version of <command>ln</command> already installed
98 by Glibc) from being built and installed again.</para>
99 </listitem>
100 </varlistentry>
101
102 <varlistentry os="e3">
103 <term><parameter>CPUOPT=""</parameter></term>
104 <listitem>
105 <para>This disables any compiler optimizations by CPU type.</para>
106 </listitem>
107 </varlistentry>
108
109 <varlistentry os="e4">
110 <term><parameter>ARCH=""</parameter></term>
111 <listitem>
112 <para>This disables the detection of the architecture.</para>
113 </listitem>
114 </varlistentry>
115
116 <varlistentry os="e5">
117 <term><parameter>CPU=""</parameter></term>
118 <listitem>
119 <para>This disables the detection of the CPU.</para>
120 </listitem>
121 </varlistentry>
122
123 </variablelist>
124
125 <para os="f">Install the package and move the <command>logger</command> binary
126 to <filename class="directory">/bin</filename> as it is needed by the
127 CLFS-Bootscripts package:</para>
128
129<screen os="g"><userinput>make HAVE_KILL=yes HAVE_SLN=yes \
130CPUOPT="" ARCH="" CPU="" USE_TTY_GROUP=no DESTDIR=${CLFS} install
131mv -v ${CLFS}/usr/bin/logger ${CLFS}/bin</userinput></screen>
132
133 </sect2>
134
135 <sect2 id="contents-util-linux" role="content">
136 <title>Contents of Util-linux</title>
137
138 <segmentedlist>
139 <segtitle>Installed programs</segtitle>
140
141 <seglistitem>
142 <seg>agetty, arch, blockdev, cal, cfdisk, chkdupexe, col, colcrt,
143 colrm, column, ctrlaltdel, cytune, ddate, dmesg, elvtune, fdformat,
144 fdisk, flock, fsck.cramfs, fsck.minix, getopt, hexdump, hwclock, ipcrm,
145 ipcs, isosize, line, logger, look, losetup, mcookie, mkfs, mkfs.bfs,
146 mkfs.cramfs, mkfs.minix, mkswap, more, mount, namei, pg, pivot_root,
147 ramsize (link to rdev), raw, rdev, readprofile, rename, renice, rev,
148 rootflags (link to rdev), script, setfdprm, setsid, setterm, sfdisk,
149 swapoff (link to swapon), swapon, tailf, tunelp, ul, umount, vidmode
150 (link to rdev), whereis, and write</seg>
151 </seglistitem>
152 </segmentedlist>
153
154 <variablelist>
155 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
156 <?dbfo list-presentation="list"?>
157 <?dbhtml list-presentation="table"?>
158
159 <varlistentry id="agetty">
160 <term><command>agetty</command></term>
161 <listitem>
162 <para>Opens a tty port, prompts for a login name,
163 and then invokes the <command>login</command> program</para>
164 <indexterm zone="ch-system-util-linux agetty">
165 <primary sortas="b-agetty">agetty</primary>
166 </indexterm>
167 </listitem>
168 </varlistentry>
169
170 <varlistentry id="arch">
171 <term><command>arch</command></term>
172 <listitem>
173 <para>Reports the machine's architecture</para>
174 <indexterm zone="ch-system-util-linux arch">
175 <primary sortas="b-arch">arch</primary>
176 </indexterm>
177 </listitem>
178 </varlistentry>
179
180 <varlistentry id="blockdev">
181 <term><command>blockdev</command></term>
182 <listitem>
183 <para>Allows users to call block device ioctls from the command
184 line</para>
185 <indexterm zone="ch-system-util-linux blockdev">
186 <primary sortas="b-blockdev">blockdev</primary>
187 </indexterm>
188 </listitem>
189 </varlistentry>
190
191 <varlistentry id="cal">
192 <term><command>cal</command></term>
193 <listitem>
194 <para>Displays a simple calendar</para>
195 <indexterm zone="ch-system-util-linux cal">
196 <primary sortas="b-cal">cal</primary>
197 </indexterm>
198 </listitem>
199 </varlistentry>
200
201 <varlistentry id="cfdisk">
202 <term><command>cfdisk</command></term>
203 <listitem>
204 <para>Manipulates the partition table of the given device</para>
205 <indexterm zone="ch-system-util-linux cfdisk">
206 <primary sortas="b-cfdisk">cfdisk</primary>
207 </indexterm>
208 </listitem>
209 </varlistentry>
210
211 <varlistentry id="chkdupexe">
212 <term><command>chkdupexe</command></term>
213 <listitem>
214 <para>Finds duplicate executables</para>
215 <indexterm zone="ch-system-util-linux chkdupexe">
216 <primary sortas="b-chkdupexe">chkdupexe</primary>
217 </indexterm>
218 </listitem>
219 </varlistentry>
220
221 <varlistentry id="col">
222 <term><command>col</command></term>
223 <listitem>
224 <para>Filters out reverse line feeds</para>
225 <indexterm zone="ch-system-util-linux col">
226 <primary sortas="b-col">col</primary>
227 </indexterm>
228 </listitem>
229 </varlistentry>
230
231 <varlistentry id="colcrt">
232 <term><command>colcrt</command></term>
233 <listitem>
234 <para>Filters <command>nroff</command> output for terminals
235 that lack some capabilities, such as overstriking and half-lines</para>
236 <indexterm zone="ch-system-util-linux colcrt">
237 <primary sortas="b-colcrt">colcrt</primary>
238 </indexterm>
239 </listitem>
240 </varlistentry>
241
242 <varlistentry id="colrm">
243 <term><command>colrm</command></term>
244 <listitem>
245 <para>Filters out the given columns</para>
246 <indexterm zone="ch-system-util-linux colrm">
247 <primary sortas="b-colrm">colrm</primary>
248 </indexterm>
249 </listitem>
250 </varlistentry>
251
252 <varlistentry id="column">
253 <term><command>column</command></term>
254 <listitem>
255 <para>Formats a given file into multiple columns</para>
256 <indexterm zone="ch-system-util-linux column">
257 <primary sortas="b-column">column</primary>
258 </indexterm>
259 </listitem>
260 </varlistentry>
261
262 <varlistentry id="ctrlaltdel">
263 <term><command>ctrlaltdel</command></term>
264 <listitem>
265 <para>Sets the function of the Ctrl+Alt+Del key combination to a
266 hard or a soft reset</para>
267 <indexterm zone="ch-system-util-linux ctrlaltdel">
268 <primary sortas="b-ctrlaltdel">ctrlaltdel</primary>
269 </indexterm>
270 </listitem>
271 </varlistentry>
272
273 <varlistentry id="cytune">
274 <term><command>cytune</command></term>
275 <listitem>
276 <para>Tunes the parameters of the serial line drivers for
277 Cyclades cards</para>
278 <indexterm zone="ch-system-util-linux cytune">
279 <primary sortas="b-cytune">cytune</primary>
280 </indexterm>
281 </listitem>
282 </varlistentry>
283
284 <varlistentry id="ddate">
285 <term><command>ddate</command></term>
286 <listitem>
287 <para>Gives the Discordian date or converts the given Gregorian date
288 to a Discordian one</para>
289 <indexterm zone="ch-system-util-linux ddate">
290 <primary sortas="b-ddate">ddate</primary>
291 </indexterm>
292 </listitem>
293 </varlistentry>
294
295 <varlistentry id="dmesg">
296 <term><command>dmesg</command></term>
297 <listitem>
298 <para>Dumps the kernel boot messages</para>
299 <indexterm zone="ch-system-util-linux dmesg">
300 <primary sortas="b-dmesg">dmesg</primary>
301 </indexterm>
302 </listitem>
303 </varlistentry>
304
305 <varlistentry id="elvtune">
306 <term><command>elvtune</command></term>
307 <listitem>
308 <para>Tunes the performance and interactivity of a block
309 device</para>
310 <indexterm zone="ch-system-util-linux elvtune">
311 <primary sortas="b-elvtune">elvtune</primary>
312 </indexterm>
313 </listitem>
314 </varlistentry>
315
316 <varlistentry id="fdformat">
317 <term><command>fdformat</command></term>
318 <listitem>
319 <para>Low-level formats a floppy disk</para>
320 <indexterm zone="ch-system-util-linux fdformat">
321 <primary sortas="b-fdformat">fdformat</primary>
322 </indexterm>
323 </listitem>
324 </varlistentry>
325
326 <varlistentry id="fdisk">
327 <term><command>fdisk</command></term>
328 <listitem>
329 <para>Manipulates the partition table of the given device</para>
330 <indexterm zone="ch-system-util-linux fdisk">
331 <primary sortas="b-fdisk">fdisk</primary>
332 </indexterm>
333 </listitem>
334 </varlistentry>
335
336 <varlistentry id="flock">
337 <term><command>flock</command></term>
338 <listitem>
339 <para>Acquires a file lock and then executes a command with the lock
340 held</para>
341 <indexterm zone="ch-system-util-linux flock">
342 <primary sortas="b-flock">flock</primary>
343 </indexterm>
344 </listitem>
345 </varlistentry>
346
347 <varlistentry id="fsck.cramfs">
348 <term><command>fsck.cramfs</command></term>
349 <listitem>
350 <para>Performs a consistency check on the Cramfs file system on the
351 given device</para>
352 <indexterm zone="ch-system-util-linux fsck.cramfs">
353 <primary sortas="b-fsck.cramfs">fsck.cramfs</primary>
354 </indexterm>
355 </listitem>
356 </varlistentry>
357
358 <varlistentry id="fsck.minix">
359 <term><command>fsck.minix</command></term>
360 <listitem>
361 <para>Performs a consistency check on the Minix file system on the
362 given device</para>
363 <indexterm zone="ch-system-util-linux fsck.minix">
364 <primary sortas="b-fsck.minix">fsck.minix</primary>
365 </indexterm>
366 </listitem>
367 </varlistentry>
368
369 <varlistentry id="getopt">
370 <term><command>getopt</command></term>
371 <listitem>
372 <para>Parses options in the given command line</para>
373 <indexterm zone="ch-system-util-linux getopt">
374 <primary sortas="b-getopt">getopt</primary>
375 </indexterm>
376 </listitem>
377 </varlistentry>
378
379 <varlistentry id="hexdump">
380 <term><command>hexdump</command></term>
381 <listitem>
382 <para>Dumps the given file in hexadecimal or in another given
383 format</para>
384 <indexterm zone="ch-system-util-linux hexdump">
385 <primary sortas="b-hexdump">hexdump</primary>
386 </indexterm>
387 </listitem>
388 </varlistentry>
389
390 <varlistentry id="hwclock">
391 <term><command>hwclock</command></term>
392 <listitem>
393 <para>Reads or sets the system's hardware clock, also called
394 the Real-Time Clock (RTC) or Basic Input-Output System (BIOS)
395 clock</para>
396 <indexterm zone="ch-system-util-linux hwclock">
397 <primary sortas="b-hwclock">hwclock</primary>
398 </indexterm>
399 </listitem>
400 </varlistentry>
401
402 <varlistentry id="ipcrm">
403 <term><command>ipcrm</command></term>
404 <listitem>
405 <para>Removes the given Inter-Process Communication (IPC) resource</para>
406 <indexterm zone="ch-system-util-linux ipcrm">
407 <primary sortas="b-ipcrm">ipcrm</primary>
408 </indexterm>
409 </listitem>
410 </varlistentry>
411
412 <varlistentry id="ipcs">
413 <term><command>ipcs</command></term>
414 <listitem>
415 <para>Provides IPC status information</para>
416 <indexterm zone="ch-system-util-linux ipcs">
417 <primary sortas="b-ipcs">ipcs</primary>
418 </indexterm>
419 </listitem>
420 </varlistentry>
421
422 <varlistentry id="isosize">
423 <term><command>isosize</command></term>
424 <listitem>
425 <para>Reports the size of an iso9660 file system</para>
426 <indexterm zone="ch-system-util-linux isosize">
427 <primary sortas="b-isosize">isosize</primary>
428 </indexterm>
429 </listitem>
430 </varlistentry>
431
432 <varlistentry id="line">
433 <term><command>line</command></term>
434 <listitem>
435 <para>Copies a single line</para>
436 <indexterm zone="ch-system-util-linux line">
437 <primary sortas="b-line">line</primary>
438 </indexterm>
439 </listitem>
440 </varlistentry>
441
442 <varlistentry id="logger">
443 <term><command>logger</command></term>
444 <listitem>
445 <para>Enters the given message into the system log</para>
446 <indexterm zone="ch-system-util-linux logger">
447 <primary sortas="b-logger">logger</primary>
448 </indexterm>
449 </listitem>
450 </varlistentry>
451
452 <varlistentry id="look">
453 <term><command>look</command></term>
454 <listitem>
455 <para>Displays lines that begin with the given string</para>
456 <indexterm zone="ch-system-util-linux look">
457 <primary sortas="b-look">look</primary>
458 </indexterm>
459 </listitem>
460 </varlistentry>
461
462 <varlistentry id="losetup">
463 <term><command>losetup</command></term>
464 <listitem>
465 <para>Sets up and controls loop devices</para>
466 <indexterm zone="ch-system-util-linux losetup">
467 <primary sortas="b-losetup">losetup</primary>
468 </indexterm>
469 </listitem>
470 </varlistentry>
471
472 <varlistentry id="mcookie">
473 <term><command>mcookie</command></term>
474 <listitem>
475 <para>Generates magic cookies (128-bit random hexadecimal numbers) for
476 <command>xauth</command></para>
477 <indexterm zone="ch-system-util-linux mcookie">
478 <primary sortas="b-mcookie">mcookie</primary>
479 </indexterm>
480 </listitem>
481 </varlistentry>
482
483 <varlistentry id="mkfs">
484 <term><command>mkfs</command></term>
485 <listitem>
486 <para>Builds a file system on a device (usually a hard disk
487 partition)</para>
488 <indexterm zone="ch-system-util-linux mkfs">
489 <primary sortas="b-mkfs">mkfs</primary>
490 </indexterm>
491 </listitem>
492 </varlistentry>
493
494 <varlistentry id="mkfs.bfs">
495 <term><command>mkfs.bfs</command></term>
496 <listitem>
497 <para>Creates a Santa Cruz Operations (SCO) bfs file system</para>
498 <indexterm zone="ch-system-util-linux mkfs.bfs">
499 <primary sortas="b-mkfs.bfs">mkfs.bfs</primary>
500 </indexterm>
501 </listitem>
502 </varlistentry>
503
504 <varlistentry id="mkfs.cramfs">
505 <term><command>mkfs.cramfs</command></term>
506 <listitem>
507 <para>Creates a cramfs file system</para>
508 <indexterm zone="ch-system-util-linux mkfs.cramfs">
509 <primary sortas="b-mkfs.cramfs">mkfs.cramfs</primary>
510 </indexterm>
511 </listitem>
512 </varlistentry>
513
514 <varlistentry id="mkfs.minix">
515 <term><command>mkfs.minix</command></term>
516 <listitem>
517 <para>Creates a Minix file system</para>
518 <indexterm zone="ch-system-util-linux mkfs.minix">
519 <primary sortas="b-mkfs.minix">mkfs.minix</primary>
520 </indexterm>
521 </listitem>
522 </varlistentry>
523
524 <varlistentry id="mkswap">
525 <term><command>mkswap</command></term>
526 <listitem>
527 <para>Initializes the given device or file to be used as a swap
528 area</para>
529 <indexterm zone="ch-system-util-linux mkswap">
530 <primary sortas="b-mkswap">mkswap</primary>
531 </indexterm>
532 </listitem>
533 </varlistentry>
534
535 <varlistentry id="more">
536 <term><command>more</command></term>
537 <listitem>
538 <para>A filter for paging through text one screen at a time</para>
539 <indexterm zone="ch-system-util-linux more">
540 <primary sortas="b-more">more</primary>
541 </indexterm>
542 </listitem>
543 </varlistentry>
544
545 <varlistentry id="mount">
546 <term><command>mount</command></term>
547 <listitem>
548 <para>Attaches the file system on the given device to a specified
549 directory in the file-system tree</para>
550 <indexterm zone="ch-system-util-linux mount">
551 <primary sortas="b-mount">mount</primary>
552 </indexterm>
553 </listitem>
554 </varlistentry>
555
556 <varlistentry id="namei">
557 <term><command>namei</command></term>
558 <listitem>
559 <para>Shows the symbolic links in the given pathnames</para>
560 <indexterm zone="ch-system-util-linux namei">
561 <primary sortas="b-namei">namei</primary>
562 </indexterm>
563 </listitem>
564 </varlistentry>
565
566 <varlistentry id="pg">
567 <term><command>pg</command></term>
568 <listitem>
569 <para>Displays a text file one screen full at a time</para>
570 <indexterm zone="ch-system-util-linux pg">
571 <primary sortas="b-pg">pg</primary>
572 </indexterm>
573 </listitem>
574 </varlistentry>
575
576 <varlistentry id="pivot_root">
577 <term><command>pivot_root</command></term>
578 <listitem>
579 <para>Makes the given file system the new root file system of the
580 current process</para>
581 <indexterm zone="ch-system-util-linux pivot_root">
582 <primary sortas="b-pivot_root">pivot_root</primary>
583 </indexterm>
584 </listitem>
585 </varlistentry>
586
587 <varlistentry id="ramsize">
588 <term><command>ramsize</command></term>
589 <listitem>
590 <para>Sets the size of the RAM disk in a bootable image</para>
591 <indexterm zone="ch-system-util-linux ramsize">
592 <primary sortas="b-ramsize">ramsize</primary>
593 </indexterm>
594 </listitem>
595 </varlistentry>
596
597 <varlistentry id="raw">
598 <term><command>raw</command></term>
599 <listitem>
600 <para>Used to bind a Linux raw character device to a block
601 device</para>
602 <indexterm zone="ch-system-util-linux raw">
603 <primary sortas="b-raw">raw</primary>
604 </indexterm>
605 </listitem>
606 </varlistentry>
607
608 <varlistentry id="rdev">
609 <term><command>rdev</command></term>
610 <listitem>
611 <para>Queries and sets the root device, among other things, in a
612 bootable image</para>
613 <indexterm zone="ch-system-util-linux rdev">
614 <primary sortas="b-rdev">rdev</primary>
615 </indexterm>
616 </listitem>
617 </varlistentry>
618
619 <varlistentry id="readprofile">
620 <term><command>readprofile</command></term>
621 <listitem>
622 <para>Reads kernel profiling information</para>
623 <indexterm zone="ch-system-util-linux readprofile">
624 <primary sortas="b-readprofile">readprofile</primary>
625 </indexterm>
626 </listitem>
627 </varlistentry>
628
629 <varlistentry id="rename">
630 <term><command>rename</command></term>
631 <listitem>
632 <para>Renames the given files, replacing a given string with
633 another</para>
634 <indexterm zone="ch-system-util-linux rename">
635 <primary sortas="b-rename">rename</primary>
636 </indexterm>
637 </listitem>
638 </varlistentry>
639
640 <varlistentry id="renice">
641 <term><command>renice</command></term>
642 <listitem>
643 <para>Alters the priority of running processes</para>
644 <indexterm zone="ch-system-util-linux renice">
645 <primary sortas="b-renice">renice</primary>
646 </indexterm>
647 </listitem>
648 </varlistentry>
649
650 <varlistentry id="rev">
651 <term><command>rev</command></term>
652 <listitem>
653 <para>Reverses the lines of a given file</para>
654 <indexterm zone="ch-system-util-linux rev">
655 <primary sortas="b-rev">rev</primary>
656 </indexterm>
657 </listitem>
658 </varlistentry>
659
660 <varlistentry id="rootflags">
661 <term><command>rootflags</command></term>
662 <listitem>
663 <para>Sets the rootflags in a bootable image</para>
664 <indexterm zone="ch-system-util-linux rootflags">
665 <primary sortas="b-rootflags">rootflags</primary>
666 </indexterm>
667 </listitem>
668 </varlistentry>
669
670 <varlistentry id="script">
671 <term><command>script</command></term>
672 <listitem>
673 <para>Makes a typescript of a terminal session</para>
674 <indexterm zone="ch-system-util-linux script">
675 <primary sortas="b-script">script</primary>
676 </indexterm>
677 </listitem>
678 </varlistentry>
679
680 <varlistentry id="setfdprm">
681 <term><command>setfdprm</command></term>
682 <listitem>
683 <para>Sets user-provided floppy disk parameters</para>
684 <indexterm zone="ch-system-util-linux setfdprm">
685 <primary sortas="b-setfdprm">setfdprm</primary>
686 </indexterm>
687 </listitem>
688 </varlistentry>
689
690 <varlistentry id="setsid">
691 <term><command>setsid</command></term>
692 <listitem>
693 <para>Runs the given program in a new session</para>
694 <indexterm zone="ch-system-util-linux setsid">
695 <primary sortas="b-setsid">setsid</primary>
696 </indexterm>
697 </listitem>
698 </varlistentry>
699
700 <varlistentry id="setterm">
701 <term><command>setterm</command></term>
702 <listitem>
703 <para>Sets terminal attributes</para>
704 <indexterm zone="ch-system-util-linux setterm">
705 <primary sortas="b-setterm">setterm</primary>
706 </indexterm>
707 </listitem>
708 </varlistentry>
709
710 <varlistentry id="sfdisk">
711 <term><command>sfdisk</command></term>
712 <listitem>
713 <para>A disk partition table manipulator</para>
714 <indexterm zone="ch-system-util-linux sfdisk">
715 <primary sortas="b-sfdisk">sfdisk</primary>
716 </indexterm>
717 </listitem>
718 </varlistentry>
719
720 <varlistentry id="swapoff">
721 <term><command>swapoff</command></term>
722 <listitem>
723 <para>Disables devices and files for paging and swapping</para>
724 <indexterm zone="ch-system-util-linux swapoff">
725 <primary sortas="b-swapoff">swapoff</primary>
726 </indexterm>
727 </listitem>
728 </varlistentry>
729
730 <varlistentry id="swapon">
731 <term><command>swapon</command></term>
732 <listitem>
733 <para>Enables devices and files for paging and swapping and
734 lists the devices and files currently in use</para>
735 <indexterm zone="ch-system-util-linux swapon">
736 <primary sortas="b-swapon">swapon</primary>
737 </indexterm>
738 </listitem>
739 </varlistentry>
740
741 <varlistentry id="tailf">
742 <term><command>tailf</command></term>
743 <listitem>
744 <para>Tracks the growth of a log file. Displays the last 10 lines
745 of a log file, then continues displaying any new entries in the
746 log file as they are created</para>
747 <indexterm zone="ch-system-util-linux tailf">
748 <primary sortas="b-tailf">tailf</primary>
749 </indexterm>
750 </listitem>
751 </varlistentry>
752
753 <varlistentry id="tunelp">
754 <term><command>tunelp</command></term>
755 <listitem>
756 <para>Tunes the parameters of the line printer</para>
757 <indexterm zone="ch-system-util-linux tunelp">
758 <primary sortas="b-tunelp">tunelp</primary>
759 </indexterm>
760 </listitem>
761 </varlistentry>
762
763 <varlistentry id="ul">
764 <term><command>ul</command></term>
765 <listitem>
766 <para>A filter for translating underscores into escape sequences
767 indicating underlining for the terminal in use</para>
768 <indexterm zone="ch-system-util-linux ul">
769 <primary sortas="b-ul">ul</primary>
770 </indexterm>
771 </listitem>
772 </varlistentry>
773
774 <varlistentry id="umount">
775 <term><command>umount</command></term>
776 <listitem>
777 <para>Disconnects a file system from the system's file tree</para>
778 <indexterm zone="ch-system-util-linux umount">
779 <primary sortas="b-umount">umount</primary>
780 </indexterm>
781 </listitem>
782 </varlistentry>
783
784 <varlistentry id="vidmode">
785 <term><command>vidmode</command></term>
786 <listitem>
787 <para>Sets the video mode in a bootable image</para>
788 <indexterm zone="ch-system-util-linux vidmode">
789 <primary sortas="b-vidmode">vidmode</primary>
790 </indexterm>
791 </listitem>
792 </varlistentry>
793
794 <varlistentry id="whereis">
795 <term><command>whereis</command></term>
796 <listitem>
797 <para>Reports the location of the binary, source, and man page
798 for the given command</para>
799 <indexterm zone="ch-system-util-linux whereis">
800 <primary sortas="b-whereis">whereis</primary>
801 </indexterm>
802 </listitem>
803 </varlistentry>
804
805 <varlistentry id="write">
806 <term><command>write</command></term>
807 <listitem>
808 <para>Sends a message to the given user <emphasis>if</emphasis> that
809 user has not disabled receipt of such messages</para>
810 <indexterm zone="ch-system-util-linux write">
811 <primary sortas="b-write">write</primary>
812 </indexterm>
813 </listitem>
814 </varlistentry>
815
816 </variablelist>
817
818 </sect2>
819
820</sect1>
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