source: BOOK/final-system/common/util-linux-ng.xml@ 4648865

clfs-1.2 clfs-2.1 clfs-3.0.0-systemd clfs-3.0.0-sysvinit systemd sysvinit
Last change on this file since 4648865 was 188b6b2, checked in by Chris Staub <chris@…>, 15 years ago

Updated lists of installed programs and libraries.

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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 </sect2>
25
26 <sect2 id="fhs-util-linux-ng" role="installation">
27 <title>FHS compliance notes</title>
28
29 <para>The FHS recommends using the <filename
30 class="directory">/var/lib/hwclock</filename> directory instead of the
31 usual <filename class="directory">/etc</filename> directory as the
32 location for the <filename>adjtime</filename> file. To make the
33 <command>hwclock</command> program FHS-compliant, run the following:</para>
34
35<screen><userinput>sed -i 's@etc/adjtime@var/lib/hwclock/adjtime@g' \
36 hwclock/hwclock.c
37mkdir -pv /var/lib/hwclock</userinput></screen>
38
39 </sect2>
40
41 <sect2 role="installation">
42 <title>Installation of Util-linux-ng</title>
43
44 <para os="a">Prepare Util-linux-ng for compilation:</para>
45
46<screen os="b"><userinput>./configure --enable-arch \
47 --enable-partx --enable-write --disable-wall</userinput></screen>
48
49 <variablelist os="c">
50 <title>The meaning of the configure options:</title>
51
52 <varlistentry>
53 <term><parameter>--enable-arch</parameter></term>
54 <listitem>
55 <para>This option allows the <command>arch</command> program to be
56 installed.</para>
57 </listitem>
58 </varlistentry>
59
60 <varlistentry>
61 <term><parameter>--enable-partx</parameter></term>
62 <listitem>
63 <para>Enables building the <command>addpart</command>, <command>delpart</command>,
64 <command>partx</command> programs.</para>
65 </listitem>
66 </varlistentry>
67
68 <varlistentry>
69 <term><parameter>--enable-write</parameter></term>
70 <listitem>
71 <para>This option allows the <command>write</command> program to be
72 installed.</para>
73 </listitem>
74 </varlistentry>
75
76 <varlistentry>
77 <term><parameter>--disable-wall</parameter></term>
78 <listitem>
79 <para>Disables building the <command>wall</command> program,
80 as the Sysvinit package installs its own version.</para>
81 </listitem>
82 </varlistentry>
83
84 </variablelist>
85
86 <para os="d">Compile the package:</para>
87
88<screen os="e"><userinput>make</userinput></screen>
89
90 <para os="f">This package does not come with a test suite.</para>
91
92 <para os="g">Install the package:</para>
93
94<screen os="h"><userinput>make install</userinput></screen>
95
96 <para os="i">Move the <command>logger</command> binary to
97 <filename class="directory">/bin</filename> as it is needed by the
98 CLFS-Bootscripts package:</para>
99
100<screen os="j"><userinput>mv -v /usr/bin/logger /bin</userinput></screen>
101
102 </sect2>
103
104 <sect2 id="contents-util-linux-ng" role="content">
105 <title>Contents of Util-linux-ng</title>
106
107 <segmentedlist>
108 <segtitle>Installed programs</segtitle>
109 <segtitle>Installed libraries</segtitle>
110
111 <seglistitem>
112 <seg>addpart, agetty, arch, blkid, blockdev, cal, cfdisk, chkdupexe,
113 chrt, col, colcrt, colrm, column, ctrlaltdel, cytune, ddate, delpart,
114 dmesg, fdformat, fdisk, findfs, flock, fsck, fsck.cramfs, fsck.minix,
115 getopt, hexdump, hwclock, ionice, ipcmk, ipcrm, ipcs, isosize,
116 ldattach, line, logger, look, losetup, lscpu, mcookie, mkfs, mkfs.bfs,
117 mkfs.cramfs, mkfs.minix, mkswap, more, mount, namei, partx, pg,
118 pivot_root, readprofile, rename, renice, rev, rtcwake, script,
119 scriptreplay, setarch, setsid, setterm, sfdisk, swapoff (link to
120 swapon), swapon, switch_root, tailf, taskset, tunelp, ul, umount,
121 uuidd, uuidgen, whereis, and write</seg>
122 <seg>libblkid.[a,so] and libuuid.[a,so]</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="addpart">
132 <term><command>addpart</command></term>
133 <listitem>
134 <para>Informs the kernel of a new partition</para>
135 <indexterm zone="ch-system-util-linux-ng addpart">
136 <primary sortas="b-addpart">addpart</primary>
137 </indexterm>
138 </listitem>
139 </varlistentry>
140
141 <varlistentry id="agetty">
142 <term><command>agetty</command></term>
143 <listitem>
144 <para>Opens a tty port, prompts for a login name,
145 and then invokes the <command>login</command> program</para>
146 <indexterm zone="ch-system-util-linux-ng agetty">
147 <primary sortas="b-agetty">agetty</primary>
148 </indexterm>
149 </listitem>
150 </varlistentry>
151
152 <varlistentry id="arch">
153 <term><command>arch</command></term>
154 <listitem>
155 <para>Reports the machine's architecture</para>
156 <indexterm zone="ch-system-util-linux-ng arch">
157 <primary sortas="b-arch">arch</primary>
158 </indexterm>
159 </listitem>
160 </varlistentry>
161
162 <varlistentry id="blkid">
163 <term><command>blkid</command></term>
164 <listitem>
165 <para>A command line utility to locate and print block device
166 attributes</para>
167 <indexterm zone="ch-system-util-linux-ng blkid">
168 <primary sortas="b-blkid">blkid</primary>
169 </indexterm>
170 </listitem>
171 </varlistentry>
172
173 <varlistentry id="blockdev">
174 <term><command>blockdev</command></term>
175 <listitem>
176 <para>Allows users to call block device ioctls from the command
177 line</para>
178 <indexterm zone="ch-system-util-linux-ng blockdev">
179 <primary sortas="b-blockdev">blockdev</primary>
180 </indexterm>
181 </listitem>
182 </varlistentry>
183
184 <varlistentry id="cal">
185 <term><command>cal</command></term>
186 <listitem>
187 <para>Displays a simple calendar</para>
188 <indexterm zone="ch-system-util-linux-ng cal">
189 <primary sortas="b-cal">cal</primary>
190 </indexterm>
191 </listitem>
192 </varlistentry>
193
194 <varlistentry id="cfdisk">
195 <term><command>cfdisk</command></term>
196 <listitem>
197 <para>Manipulates the partition table of the given device</para>
198 <indexterm zone="ch-system-util-linux-ng cfdisk">
199 <primary sortas="b-cfdisk">cfdisk</primary>
200 </indexterm>
201 </listitem>
202 </varlistentry>
203
204 <varlistentry id="chkdupexe">
205 <term><command>chkdupexe</command></term>
206 <listitem>
207 <para>Finds duplicate executables</para>
208 <indexterm zone="ch-system-util-linux-ng chkdupexe">
209 <primary sortas="b-chkdupexe">chkdupexe</primary>
210 </indexterm>
211 </listitem>
212 </varlistentry>
213
214 <varlistentry id="chrt">
215 <term><command>chrt</command></term>
216 <listitem>
217 <para>Manipulates real-time attributes of a process</para>
218 <indexterm zone="ch-system-util-linux-ng chrt">
219 <primary sortas="b-chrt">chrt</primary>
220 </indexterm>
221 </listitem>
222 </varlistentry>
223
224 <varlistentry id="col">
225 <term><command>col</command></term>
226 <listitem>
227 <para>Filters out reverse line feeds</para>
228 <indexterm zone="ch-system-util-linux-ng col">
229 <primary sortas="b-col">col</primary>
230 </indexterm>
231 </listitem>
232 </varlistentry>
233
234 <varlistentry id="colcrt">
235 <term><command>colcrt</command></term>
236 <listitem>
237 <para>Filters <command>nroff</command> output for terminals
238 that lack some capabilities, such as overstriking and half-lines</para>
239 <indexterm zone="ch-system-util-linux-ng colcrt">
240 <primary sortas="b-colcrt">colcrt</primary>
241 </indexterm>
242 </listitem>
243 </varlistentry>
244
245 <varlistentry id="colrm">
246 <term><command>colrm</command></term>
247 <listitem>
248 <para>Filters out the given columns</para>
249 <indexterm zone="ch-system-util-linux-ng colrm">
250 <primary sortas="b-colrm">colrm</primary>
251 </indexterm>
252 </listitem>
253 </varlistentry>
254
255 <varlistentry id="column">
256 <term><command>column</command></term>
257 <listitem>
258 <para>Formats a given file into multiple columns</para>
259 <indexterm zone="ch-system-util-linux-ng column">
260 <primary sortas="b-column">column</primary>
261 </indexterm>
262 </listitem>
263 </varlistentry>
264
265 <varlistentry id="ctrlaltdel">
266 <term><command>ctrlaltdel</command></term>
267 <listitem>
268 <para>Sets the function of the Ctrl+Alt+Del key combination to a
269 hard or a soft reset</para>
270 <indexterm zone="ch-system-util-linux-ng ctrlaltdel">
271 <primary sortas="b-ctrlaltdel">ctrlaltdel</primary>
272 </indexterm>
273 </listitem>
274 </varlistentry>
275
276 <varlistentry id="cytune">
277 <term><command>cytune</command></term>
278 <listitem>
279 <para>Tunes the parameters of the serial line drivers for
280 Cyclades cards</para>
281 <indexterm zone="ch-system-util-linux-ng cytune">
282 <primary sortas="b-cytune">cytune</primary>
283 </indexterm>
284 </listitem>
285 </varlistentry>
286
287 <varlistentry id="ddate">
288 <term><command>ddate</command></term>
289 <listitem>
290 <para>Gives the Discordian date or converts the given Gregorian date
291 to a Discordian one</para>
292 <indexterm zone="ch-system-util-linux-ng ddate">
293 <primary sortas="b-ddate">ddate</primary>
294 </indexterm>
295 </listitem>
296 </varlistentry>
297
298 <varlistentry id="delpart">
299 <term><command>delpart</command></term>
300 <listitem>
301 <para>Asks the kernel to remove a partition</para>
302 <indexterm zone="ch-system-util-linux-ng delpart">
303 <primary sortas="b-delpart">delpart</primary>
304 </indexterm>
305 </listitem>
306 </varlistentry>
307
308 <varlistentry id="dmesg">
309 <term><command>dmesg</command></term>
310 <listitem>
311 <para>Dumps the kernel boot messages</para>
312 <indexterm zone="ch-system-util-linux-ng dmesg">
313 <primary sortas="b-dmesg">dmesg</primary>
314 </indexterm>
315 </listitem>
316 </varlistentry>
317
318 <varlistentry id="fdformat">
319 <term><command>fdformat</command></term>
320 <listitem>
321 <para>Low-level formats a floppy disk</para>
322 <indexterm zone="ch-system-util-linux-ng fdformat">
323 <primary sortas="b-fdformat">fdformat</primary>
324 </indexterm>
325 </listitem>
326 </varlistentry>
327
328 <varlistentry id="fdisk">
329 <term><command>fdisk</command></term>
330 <listitem>
331 <para>Manipulates the partition table of the given device</para>
332 <indexterm zone="ch-system-util-linux-ng fdisk">
333 <primary sortas="b-fdisk">fdisk</primary>
334 </indexterm>
335 </listitem>
336 </varlistentry>
337
338 <varlistentry id="findfs">
339 <term><command>findfs</command></term>
340 <listitem>
341 <para>Finds a file system by label or Universally Unique Identifier
342 (UUID)</para>
343 <indexterm zone="ch-system-util-linux-ng findfs">
344 <primary sortas="b-findfs">findfs</primary>
345 </indexterm>
346 </listitem>
347 </varlistentry>
348
349 <varlistentry id="flock">
350 <term><command>flock</command></term>
351 <listitem>
352 <para>Acquires a file lock and then executes a command with the lock
353 held</para>
354 <indexterm zone="ch-system-util-linux-ng flock">
355 <primary sortas="b-flock">flock</primary>
356 </indexterm>
357 </listitem>
358 </varlistentry>
359
360 <varlistentry id="fsck">
361 <term><command>fsck</command></term>
362 <listitem>
363 <para>Is used to check, and optionally repair, file systems</para>
364 <indexterm zone="ch-system-util-linux-ng fsck">
365 <primary sortas="b-fsck">fsck</primary>
366 </indexterm>
367 </listitem>
368 </varlistentry>
369
370 <varlistentry id="fsck.cramfs">
371 <term><command>fsck.cramfs</command></term>
372 <listitem>
373 <para>Performs a consistency check on the Cramfs file system on the
374 given device</para>
375 <indexterm zone="ch-system-util-linux-ng fsck.cramfs">
376 <primary sortas="b-fsck.cramfs">fsck.cramfs</primary>
377 </indexterm>
378 </listitem>
379 </varlistentry>
380
381 <varlistentry id="fsck.minix">
382 <term><command>fsck.minix</command></term>
383 <listitem>
384 <para>Performs a consistency check on the Minix file system on the
385 given device</para>
386 <indexterm zone="ch-system-util-linux-ng fsck.minix">
387 <primary sortas="b-fsck.minix">fsck.minix</primary>
388 </indexterm>
389 </listitem>
390 </varlistentry>
391
392 <varlistentry id="getopt">
393 <term><command>getopt</command></term>
394 <listitem>
395 <para>Parses options in the given command line</para>
396 <indexterm zone="ch-system-util-linux-ng getopt">
397 <primary sortas="b-getopt">getopt</primary>
398 </indexterm>
399 </listitem>
400 </varlistentry>
401
402 <varlistentry id="hexdump">
403 <term><command>hexdump</command></term>
404 <listitem>
405 <para>Dumps the given file in hexadecimal or in another given
406 format</para>
407 <indexterm zone="ch-system-util-linux-ng hexdump">
408 <primary sortas="b-hexdump">hexdump</primary>
409 </indexterm>
410 </listitem>
411 </varlistentry>
412
413 <varlistentry id="hwclock">
414 <term><command>hwclock</command></term>
415 <listitem>
416 <para>Reads or sets the system's hardware clock, also called
417 the Real-Time Clock (RTC) or Basic Input-Output System (BIOS)
418 clock</para>
419 <indexterm zone="ch-system-util-linux-ng hwclock">
420 <primary sortas="b-hwclock">hwclock</primary>
421 </indexterm>
422 </listitem>
423 </varlistentry>
424
425 <varlistentry id="ionice">
426 <term><command>ionice</command></term>
427 <listitem>
428 <para>Gives and sets program I/O scheduling class and priority</para>
429 <indexterm zone="ch-system-util-linux-ng ionice">
430 <primary sortas="b-ionice">ionice</primary>
431 </indexterm>
432 </listitem>
433 </varlistentry>
434
435 <varlistentry id="ipcmk">
436 <term><command>ipcmk</command></term>
437 <listitem>
438 <para>Creates various IPC resources</para>
439 <indexterm zone="ch-system-util-linux-ng ipcmk">
440 <primary sortas="b-ipcmk">ipcmk</primary>
441 </indexterm>
442 </listitem>
443 </varlistentry>
444
445 <varlistentry id="ipcrm">
446 <term><command>ipcrm</command></term>
447 <listitem>
448 <para>Removes the given Inter-Process Communication (IPC) resource</para>
449 <indexterm zone="ch-system-util-linux-ng ipcrm">
450 <primary sortas="b-ipcrm">ipcrm</primary>
451 </indexterm>
452 </listitem>
453 </varlistentry>
454
455 <varlistentry id="ipcs">
456 <term><command>ipcs</command></term>
457 <listitem>
458 <para>Provides IPC status information</para>
459 <indexterm zone="ch-system-util-linux-ng ipcs">
460 <primary sortas="b-ipcs">ipcs</primary>
461 </indexterm>
462 </listitem>
463 </varlistentry>
464
465 <varlistentry id="isosize">
466 <term><command>isosize</command></term>
467 <listitem>
468 <para>Reports the size of an iso9660 file system</para>
469 <indexterm zone="ch-system-util-linux-ng isosize">
470 <primary sortas="b-isosize">isosize</primary>
471 </indexterm>
472 </listitem>
473 </varlistentry>
474
475 <varlistentry id="ldattach">
476 <term><command>ldattach</command></term>
477 <listitem>
478 <para>Attaches a line discipline to a serial line</para>
479 <indexterm zone="ch-system-util-linux-ng ldattach">
480 <primary sortas="b-ldattach">ldattach</primary>
481 </indexterm>
482 </listitem>
483 </varlistentry>
484
485 <varlistentry id="line">
486 <term><command>line</command></term>
487 <listitem>
488 <para>Copies a single line</para>
489 <indexterm zone="ch-system-util-linux-ng line">
490 <primary sortas="b-line">line</primary>
491 </indexterm>
492 </listitem>
493 </varlistentry>
494
495 <varlistentry id="logger">
496 <term><command>logger</command></term>
497 <listitem>
498 <para>Enters the given message into the system log</para>
499 <indexterm zone="ch-system-util-linux-ng logger">
500 <primary sortas="b-logger">logger</primary>
501 </indexterm>
502 </listitem>
503 </varlistentry>
504
505 <varlistentry id="look">
506 <term><command>look</command></term>
507 <listitem>
508 <para>Displays lines that begin with the given string</para>
509 <indexterm zone="ch-system-util-linux-ng look">
510 <primary sortas="b-look">look</primary>
511 </indexterm>
512 </listitem>
513 </varlistentry>
514
515 <varlistentry id="losetup">
516 <term><command>losetup</command></term>
517 <listitem>
518 <para>Sets up and controls loop devices</para>
519 <indexterm zone="ch-system-util-linux-ng losetup">
520 <primary sortas="b-losetup">losetup</primary>
521 </indexterm>
522 </listitem>
523 </varlistentry>
524
525 <varlistentry id="lscpu">
526 <term><command>lscpu</command></term>
527 <listitem>
528 <para>Prints CPU architechture information</para>
529 <indexterm zone="ch-system-util-linux-ng lscpu">
530 <primary sortas="b-lscpu">lscpu</primary>
531 </indexterm>
532 </listitem>
533 </varlistentry>
534
535 <varlistentry id="mcookie">
536 <term><command>mcookie</command></term>
537 <listitem>
538 <para>Generates magic cookies (128-bit random hexadecimal numbers) for
539 <command>xauth</command></para>
540 <indexterm zone="ch-system-util-linux-ng mcookie">
541 <primary sortas="b-mcookie">mcookie</primary>
542 </indexterm>
543 </listitem>
544 </varlistentry>
545
546 <varlistentry id="mkfs">
547 <term><command>mkfs</command></term>
548 <listitem>
549 <para>Builds a file system on a device (usually a hard disk
550 partition)</para>
551 <indexterm zone="ch-system-util-linux-ng mkfs">
552 <primary sortas="b-mkfs">mkfs</primary>
553 </indexterm>
554 </listitem>
555 </varlistentry>
556
557 <varlistentry id="mkfs.bfs">
558 <term><command>mkfs.bfs</command></term>
559 <listitem>
560 <para>Creates a Santa Cruz Operations (SCO) bfs file system</para>
561 <indexterm zone="ch-system-util-linux-ng mkfs.bfs">
562 <primary sortas="b-mkfs.bfs">mkfs.bfs</primary>
563 </indexterm>
564 </listitem>
565 </varlistentry>
566
567 <varlistentry id="mkfs.cramfs">
568 <term><command>mkfs.cramfs</command></term>
569 <listitem>
570 <para>Creates a cramfs file system</para>
571 <indexterm zone="ch-system-util-linux-ng mkfs.cramfs">
572 <primary sortas="b-mkfs.cramfs">mkfs.cramfs</primary>
573 </indexterm>
574 </listitem>
575 </varlistentry>
576
577 <varlistentry id="mkfs.minix">
578 <term><command>mkfs.minix</command></term>
579 <listitem>
580 <para>Creates a Minix file system</para>
581 <indexterm zone="ch-system-util-linux-ng mkfs.minix">
582 <primary sortas="b-mkfs.minix">mkfs.minix</primary>
583 </indexterm>
584 </listitem>
585 </varlistentry>
586
587 <varlistentry id="mkswap">
588 <term><command>mkswap</command></term>
589 <listitem>
590 <para>Initializes the given device or file to be used as a swap
591 area</para>
592 <indexterm zone="ch-system-util-linux-ng mkswap">
593 <primary sortas="b-mkswap">mkswap</primary>
594 </indexterm>
595 </listitem>
596 </varlistentry>
597
598 <varlistentry id="more">
599 <term><command>more</command></term>
600 <listitem>
601 <para>A filter for paging through text one screen at a time</para>
602 <indexterm zone="ch-system-util-linux-ng more">
603 <primary sortas="b-more">more</primary>
604 </indexterm>
605 </listitem>
606 </varlistentry>
607
608 <varlistentry id="mount">
609 <term><command>mount</command></term>
610 <listitem>
611 <para>Attaches the file system on the given device to a specified
612 directory in the file-system tree</para>
613 <indexterm zone="ch-system-util-linux-ng mount">
614 <primary sortas="b-mount">mount</primary>
615 </indexterm>
616 </listitem>
617 </varlistentry>
618
619 <varlistentry id="namei">
620 <term><command>namei</command></term>
621 <listitem>
622 <para>Shows the symbolic links in the given pathnames</para>
623 <indexterm zone="ch-system-util-linux-ng namei">
624 <primary sortas="b-namei">namei</primary>
625 </indexterm>
626 </listitem>
627 </varlistentry>
628
629 <varlistentry id="partx">
630 <term><command>partx</command></term>
631 <listitem>
632 <para>Tells the kernel about the presence and numbering of on-disk
633 partitions</para>
634 <indexterm zone="ch-system-util-linux-ng partx">
635 <primary sortas="b-partx">partx</primary>
636 </indexterm>
637 </listitem>
638 </varlistentry>
639
640 <varlistentry id="pg">
641 <term><command>pg</command></term>
642 <listitem>
643 <para>Displays a text file one screen full at a time</para>
644 <indexterm zone="ch-system-util-linux-ng pg">
645 <primary sortas="b-pg">pg</primary>
646 </indexterm>
647 </listitem>
648 </varlistentry>
649
650 <varlistentry id="pivot_root">
651 <term><command>pivot_root</command></term>
652 <listitem>
653 <para>Makes the given file system the new root file system of the
654 current process</para>
655 <indexterm zone="ch-system-util-linux-ng pivot_root">
656 <primary sortas="b-pivot_root">pivot_root</primary>
657 </indexterm>
658 </listitem>
659 </varlistentry>
660
661 <varlistentry id="readprofile">
662 <term><command>readprofile</command></term>
663 <listitem>
664 <para>Reads kernel profiling information</para>
665 <indexterm zone="ch-system-util-linux-ng readprofile">
666 <primary sortas="b-readprofile">readprofile</primary>
667 </indexterm>
668 </listitem>
669 </varlistentry>
670
671 <varlistentry id="rename">
672 <term><command>rename</command></term>
673 <listitem>
674 <para>Renames the given files, replacing a given string with
675 another</para>
676 <indexterm zone="ch-system-util-linux-ng rename">
677 <primary sortas="b-rename">rename</primary>
678 </indexterm>
679 </listitem>
680 </varlistentry>
681
682 <varlistentry id="renice">
683 <term><command>renice</command></term>
684 <listitem>
685 <para>Alters the priority of running processes</para>
686 <indexterm zone="ch-system-util-linux-ng renice">
687 <primary sortas="b-renice">renice</primary>
688 </indexterm>
689 </listitem>
690 </varlistentry>
691
692 <varlistentry id="rev">
693 <term><command>rev</command></term>
694 <listitem>
695 <para>Reverses the lines of a given file</para>
696 <indexterm zone="ch-system-util-linux-ng rev">
697 <primary sortas="b-rev">rev</primary>
698 </indexterm>
699 </listitem>
700 </varlistentry>
701
702 <varlistentry id="rtcwake">
703 <term><command>rtcwake</command></term>
704 <listitem>
705 <para>Enters a system sleep state until a specified wakeup time</para>
706 <indexterm zone="ch-system-util-linux-ng rtcwake">
707 <primary sortas="b-rtcwake">rtcwake</primary>
708 </indexterm>
709 </listitem>
710 </varlistentry>
711
712 <varlistentry id="script">
713 <term><command>script</command></term>
714 <listitem>
715 <para>Makes a typescript of a terminal session</para>
716 <indexterm zone="ch-system-util-linux-ng script">
717 <primary sortas="b-script">script</primary>
718 </indexterm>
719 </listitem>
720 </varlistentry>
721
722 <varlistentry id="scriptreplay">
723 <term><command>scriptreplay</command></term>
724 <listitem>
725 <para>Plays back typescripts created by <command>script</command></para>
726 <indexterm zone="ch-system-util-linux-ng scriptreplay">
727 <primary sortas="b-scriptreplay">scriptreplay</primary>
728 </indexterm>
729 </listitem>
730 </varlistentry>
731
732 <varlistentry id="setarch">
733 <term><command>setarch</command></term>
734 <listitem>
735 <para>Changes reported architecture in new program environment and
736 sets personality flags</para>
737 <indexterm zone="ch-system-util-linux-ng setarch">
738 <primary sortas="b-setarch">setarch</primary>
739 </indexterm>
740 </listitem>
741 </varlistentry>
742
743 <varlistentry id="setsid">
744 <term><command>setsid</command></term>
745 <listitem>
746 <para>Runs the given program in a new session</para>
747 <indexterm zone="ch-system-util-linux-ng setsid">
748 <primary sortas="b-setsid">setsid</primary>
749 </indexterm>
750 </listitem>
751 </varlistentry>
752
753 <varlistentry id="setterm">
754 <term><command>setterm</command></term>
755 <listitem>
756 <para>Sets terminal attributes</para>
757 <indexterm zone="ch-system-util-linux-ng setterm">
758 <primary sortas="b-setterm">setterm</primary>
759 </indexterm>
760 </listitem>
761 </varlistentry>
762
763 <varlistentry id="sfdisk">
764 <term><command>sfdisk</command></term>
765 <listitem>
766 <para>A disk partition table manipulator</para>
767 <indexterm zone="ch-system-util-linux-ng sfdisk">
768 <primary sortas="b-sfdisk">sfdisk</primary>
769 </indexterm>
770 </listitem>
771 </varlistentry>
772
773 <varlistentry id="swapoff">
774 <term><command>swapoff</command></term>
775 <listitem>
776 <para>Disables devices and files for paging and swapping</para>
777 <indexterm zone="ch-system-util-linux-ng swapoff">
778 <primary sortas="b-swapoff">swapoff</primary>
779 </indexterm>
780 </listitem>
781 </varlistentry>
782
783 <varlistentry id="swapon">
784 <term><command>swapon</command></term>
785 <listitem>
786 <para>Enables devices and files for paging and swapping and
787 lists the devices and files currently in use</para>
788 <indexterm zone="ch-system-util-linux-ng swapon">
789 <primary sortas="b-swapon">swapon</primary>
790 </indexterm>
791 </listitem>
792 </varlistentry>
793
794 <varlistentry id="switch_root">
795 <term><command>switch_root</command></term>
796 <listitem>
797 <para>Switches to another filesystem as the root of the mount tree</para>
798 <indexterm zone="ch-system-util-linux-ng switch_root">
799 <primary sortas="b-switch_root">switch_root</primary>
800 </indexterm>
801 </listitem>
802 </varlistentry>
803
804 <varlistentry id="tailf">
805 <term><command>tailf</command></term>
806 <listitem>
807 <para>Tracks the growth of a log file. Displays the last 10 lines
808 of a log file, then continues displaying any new entries in the
809 log file as they are created</para>
810 <indexterm zone="ch-system-util-linux-ng tailf">
811 <primary sortas="b-tailf">tailf</primary>
812 </indexterm>
813 </listitem>
814 </varlistentry>
815
816 <varlistentry id="taskset">
817 <term><command>taskset</command></term>
818 <listitem>
819 <para>Retrieves or sets a process's CPU affinity</para>
820 <indexterm zone="ch-system-util-linux-ng taskset">
821 <primary sortas="b-taskset">taskset</primary>
822 </indexterm>
823 </listitem>
824 </varlistentry>
825
826 <varlistentry id="tunelp">
827 <term><command>tunelp</command></term>
828 <listitem>
829 <para>Tunes the parameters of the line printer</para>
830 <indexterm zone="ch-system-util-linux-ng tunelp">
831 <primary sortas="b-tunelp">tunelp</primary>
832 </indexterm>
833 </listitem>
834 </varlistentry>
835
836 <varlistentry id="ul">
837 <term><command>ul</command></term>
838 <listitem>
839 <para>A filter for translating underscores into escape sequences
840 indicating underlining for the terminal in use</para>
841 <indexterm zone="ch-system-util-linux-ng ul">
842 <primary sortas="b-ul">ul</primary>
843 </indexterm>
844 </listitem>
845 </varlistentry>
846
847 <varlistentry id="umount">
848 <term><command>umount</command></term>
849 <listitem>
850 <para>Disconnects a file system from the system's file tree</para>
851 <indexterm zone="ch-system-util-linux-ng umount">
852 <primary sortas="b-umount">umount</primary>
853 </indexterm>
854 </listitem>
855 </varlistentry>
856
857 <varlistentry id="uuidd">
858 <term><command>uuidd</command></term>
859 <listitem>
860 <para>A daemon used by the UUID library to generate time-based
861 UUIDs in a secure and guranteed-unique fashion.</para>
862 <indexterm zone="ch-system-util-linux-ng uuidd">
863 <primary sortas="b-uuidd">uuidd</primary>
864 </indexterm>
865 </listitem>
866 </varlistentry>
867
868 <varlistentry id="uuidgen">
869 <term><command>uuidgen</command></term>
870 <listitem>
871 <para>Creates new UUIDs. Each new UUID can reasonably be considered
872 unique among all UUIDs created, on the local system and on other
873 systems, in the past and in the future</para>
874 <indexterm zone="ch-system-util-linux-ng uuidgen">
875 <primary sortas="b-uuidgen">uuidgen</primary>
876 </indexterm>
877 </listitem>
878 </varlistentry>
879
880 <varlistentry id="whereis">
881 <term><command>whereis</command></term>
882 <listitem>
883 <para>Reports the location of the binary, source, and man page
884 for the given command</para>
885 <indexterm zone="ch-system-util-linux-ng whereis">
886 <primary sortas="b-whereis">whereis</primary>
887 </indexterm>
888 </listitem>
889 </varlistentry>
890
891 <varlistentry id="write">
892 <term><command>write</command></term>
893 <listitem>
894 <para>Sends a message to the given user <emphasis>if</emphasis> that
895 user has not disabled receipt of such messages</para>
896 <indexterm zone="ch-system-util-linux-ng write">
897 <primary sortas="b-write">write</primary>
898 </indexterm>
899 </listitem>
900 </varlistentry>
901
902 <varlistentry id="libblkid">
903 <term><filename class="libraryfile">libblkid</filename></term>
904 <listitem>
905 <para>Contains routines for device identification and token
906 extraction</para>
907 <indexterm zone="ch-system-util-linux-ng libblkid">
908 <primary sortas="c-libblkid">libblkid</primary>
909 </indexterm>
910 </listitem>
911 </varlistentry>
912
913 <varlistentry id="libuuid">
914 <term><filename class="libraryfile">libuuid</filename></term>
915 <listitem>
916 <para>Contains routines for generating unique identifiers for objects
917 that may be accessible beyond the local system</para>
918 <indexterm zone="ch-system-util-linux-ng libuuid">
919 <primary sortas="c-libuuid">libuuid</primary>
920 </indexterm>
921 </listitem>
922 </varlistentry>
923
924 </variablelist>
925
926 </sect2>
927
928</sect1>
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