source: chapter06/util-linux.xml@ 0c90d60

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Last change on this file since 0c90d60 was 0c90d60, checked in by Matthew Burgess <matthew@…>, 12 years ago

Upgrade to Util-Linux-2.21. Fixes #3002.

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@9763 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

  • Property mode set to 100644
File size: 35.5 KB
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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 <sect1info condition="script">
12 <productname>util-linux</productname>
13 <productnumber>&util-linux-version;</productnumber>
14 <address>&util-linux-url;</address>
15 </sect1info>
16
17 <title>Util-linux-&util-linux-version;</title>
18
19 <indexterm zone="ch-system-util-linux">
20 <primary sortas="a-Util-linux">Util-linux</primary>
21 </indexterm>
22
23 <sect2 role="package">
24 <title/>
25
26 <para>The Util-linux package contains miscellaneous utility programs.
27 Among them are utilities for handling file systems, consoles, partitions,
28 and messages.</para>
29
30 <segmentedlist>
31 <segtitle>&buildtime;</segtitle>
32 <segtitle>&diskspace;</segtitle>
33
34 <seglistitem>
35 <seg>&util-linux-ch6-sbu;</seg>
36 <seg>&util-linux-ch6-du;</seg>
37 </seglistitem>
38 </segmentedlist>
39
40 </sect2>
41
42 <sect2 role="installation">
43 <title>FHS compliance notes</title>
44
45 <para>The FHS recommends using the <filename
46 class="directory">/var/lib/hwclock</filename> directory instead of the
47 usual <filename class="directory">/etc</filename> directory as the
48 location for the <filename>adjtime</filename> file. To make the
49 <command>hwclock</command> program FHS-compliant, run the
50 following:</para>
51
52<screen><userinput remap="pre">sed -e 's@etc/adjtime@var/lib/hwclock/adjtime@g' \
53 -i $(grep -rl '/etc/adjtime' .)
54mkdir -pv /var/lib/hwclock</userinput></screen>
55
56 </sect2>
57
58 <sect2 role="installation">
59 <title>Installation of Util-linux</title>
60
61<screen><userinput remap="configure">./configure</userinput></screen>
62
63 <para>Compile the package:</para>
64
65<screen><userinput remap="make">make</userinput></screen>
66
67 <para>This package does not come with a test suite.</para>
68
69 <para>Install the package:</para>
70
71<screen><userinput remap="install">make install</userinput></screen>
72
73 </sect2>
74
75 <sect2 id="contents-utillinux" role="content">
76 <title>Contents of Util-linux</title>
77
78 <segmentedlist>
79 <segtitle>Installed programs</segtitle>
80 <segtitle>Installed libraries</segtitle>
81 <segtitle>Installed directories</segtitle>
82
83 <seglistitem>
84 <seg>addpart, agetty, blkid, blockdev, cal, cfdisk, chcpu, chkdupexe,
85 chrt, col, colcrt, colrm, column, ctrlaltdel, cytune, delpart,
86 dmesg, fallocate, fdformat, fdisk, findfs, findmnt, flock, fsck,
87 fsck.cramfs, fsck.minix, fsfreeze, fstrim, getopt, hexdump, hwclock, i386,
88 ionice, ipcmk, ipcrm, ipcs, isosize, ldattach, linux32, linux64,
89 logger, look, losetup, lsblk, lscpu, mcookie, mkfs, mkfs.bfs, mkfs.cramfs,
90 mkfs.minix, mkswap, more, mount, mountpoint, namei, partx, pg, pivot_root,
91 prlimit, raw, readprofile, rename, renice, rev, rtcwake, script, scriptreplay,
92 setarch, setsid, setterm, sfdisk, swaplabel, swapoff (link to swapon),
93 swapon, switch_root, tailf, taskset, tunelp, ul, umount, unshare,
94 uuidd, uuidgen, wall, whereis, wipefs, and x86_64</seg>
95 <seg>libblkid.{a,so}, libmount.{a,so}, libuuid.{a,so}</seg>
96 <seg>/usr/include/blkid, /usr/include/libmount, /usr/include/uuid,
97 /usr/share/getopt, /var/lib/hwclock</seg>
98 </seglistitem>
99 </segmentedlist>
100
101 <variablelist>
102 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
103 <?dbfo list-presentation="list"?>
104 <?dbhtml list-presentation="table"?>
105
106 <varlistentry id="addpart">
107 <term><command>addpart</command></term>
108 <listitem>
109 <para>Informs the Linux kernel of new partitions</para>
110 <indexterm zone="ch-system-util-linux addpart">
111 <primary sortas="b-addpart">addpart</primary>
112 </indexterm>
113 </listitem>
114 </varlistentry>
115
116 <varlistentry id="agetty">
117 <term><command>agetty</command></term>
118 <listitem>
119 <para>Opens a tty port, prompts for a login name,
120 and then invokes the <command>login</command> program</para>
121 <indexterm zone="ch-system-util-linux agetty">
122 <primary sortas="b-agetty">agetty</primary>
123 </indexterm>
124 </listitem>
125 </varlistentry>
126
127 <varlistentry id="blkid">
128 <term><command>blkid</command></term>
129 <listitem>
130 <para>A command line utility to locate and print block device
131 attributes</para>
132 <indexterm zone="ch-system-util-linux blkid">
133 <primary sortas="b-blkid">blkid</primary>
134 </indexterm>
135 </listitem>
136 </varlistentry>
137
138 <varlistentry id="blockdev">
139 <term><command>blockdev</command></term>
140 <listitem>
141 <para>Allows users to call block device ioctls from the command
142 line</para>
143 <indexterm zone="ch-system-util-linux blockdev">
144 <primary sortas="b-blockdev">blockdev</primary>
145 </indexterm>
146 </listitem>
147 </varlistentry>
148
149 <varlistentry id="cal">
150 <term><command>cal</command></term>
151 <listitem>
152 <para>Displays a simple calendar</para>
153 <indexterm zone="ch-system-util-linux cal">
154 <primary sortas="b-cal">cal</primary>
155 </indexterm>
156 </listitem>
157 </varlistentry>
158
159 <varlistentry id="cfdisk">
160 <term><command>cfdisk</command></term>
161 <listitem>
162 <para>Manipulates the partition table of the given device</para>
163 <indexterm zone="ch-system-util-linux cfdisk">
164 <primary sortas="b-cfdisk">cfdisk</primary>
165 </indexterm>
166 </listitem>
167 </varlistentry>
168
169 <varlistentry id="chcpu">
170 <term><command>chcpu</command></term>
171 <listitem>
172 <para>Modifies the state of CPUs</para>
173 <indexterm zone="ch-system-util-linux chcpu">
174 <primary sortas="b-chcpu">chcpu</primary>
175 </indexterm>
176 </listitem>
177 </varlistentry>
178
179 <varlistentry id="chkdupexe">
180 <term><command>chkdupexe</command></term>
181 <listitem>
182 <para>Finds duplicate executables</para>
183 <indexterm zone="ch-system-util-linux chkdupexe">
184 <primary sortas="b-chkdupexe">chkdupexe</primary>
185 </indexterm>
186 </listitem>
187 </varlistentry>
188
189 <varlistentry id="chrt">
190 <term><command>chrt</command></term>
191 <listitem>
192 <para>Manipulates real-time attributes of a process</para>
193 <indexterm zone="ch-system-util-linux chrt">
194 <primary sortas="b-chrt">chrt</primary>
195 </indexterm>
196 </listitem>
197 </varlistentry>
198
199 <varlistentry id="col">
200 <term><command>col</command></term>
201 <listitem>
202 <para>Filters out reverse line feeds</para>
203 <indexterm zone="ch-system-util-linux col">
204 <primary sortas="b-col">col</primary>
205 </indexterm>
206 </listitem>
207 </varlistentry>
208
209 <varlistentry id="colcrt">
210 <term><command>colcrt</command></term>
211 <listitem>
212 <para>Filters <command>nroff</command> output for terminals
213 that lack some capabilities, such as overstriking and half-lines</para>
214 <indexterm zone="ch-system-util-linux colcrt">
215 <primary sortas="b-colcrt">colcrt</primary>
216 </indexterm>
217 </listitem>
218 </varlistentry>
219
220 <varlistentry id="colrm">
221 <term><command>colrm</command></term>
222 <listitem>
223 <para>Filters out the given columns</para>
224 <indexterm zone="ch-system-util-linux colrm">
225 <primary sortas="b-colrm">colrm</primary>
226 </indexterm>
227 </listitem>
228 </varlistentry>
229
230 <varlistentry id="column">
231 <term><command>column</command></term>
232 <listitem>
233 <para>Formats a given file into multiple columns</para>
234 <indexterm zone="ch-system-util-linux column">
235 <primary sortas="b-column">column</primary>
236 </indexterm>
237 </listitem>
238 </varlistentry>
239
240 <varlistentry id="ctrlaltdel">
241 <term><command>ctrlaltdel</command></term>
242 <listitem>
243 <para>Sets the function of the Ctrl+Alt+Del key combination to a
244 hard or a soft reset</para>
245 <indexterm zone="ch-system-util-linux ctrlaltdel">
246 <primary sortas="b-ctrlaltdel">ctrlaltdel</primary>
247 </indexterm>
248 </listitem>
249 </varlistentry>
250
251 <varlistentry id="cytune">
252 <term><command>cytune</command></term>
253 <listitem>
254 <para>Tunes the parameters of the serial line drivers for
255 Cyclades cards</para>
256 <indexterm zone="ch-system-util-linux cytune">
257 <primary sortas="b-cytune">cytune</primary>
258 </indexterm>
259 </listitem>
260 </varlistentry>
261
262 <varlistentry id="delpart">
263 <term><command>delpart</command></term>
264 <listitem>
265 <para>Asks the Linux kernel to remove a partition</para>
266 <indexterm zone="ch-system-util-linux delpart">
267 <primary sortas="b-delpart">delpart</primary>
268 </indexterm>
269 </listitem>
270 </varlistentry>
271
272 <varlistentry id="dmesg">
273 <term><command>dmesg</command></term>
274 <listitem>
275 <para>Dumps the kernel boot messages</para>
276 <indexterm zone="ch-system-util-linux dmesg">
277 <primary sortas="b-dmesg">dmesg</primary>
278 </indexterm>
279 </listitem>
280 </varlistentry>
281
282 <varlistentry id="fallocate">
283 <term><command>fallocate</command></term>
284 <listitem>
285 <para>Preallocates space to a file</para>
286 <indexterm zone="ch-system-util-linux fallocate">
287 <primary sortas="b-fallocate">fallocate</primary>
288 </indexterm>
289 </listitem>
290 </varlistentry>
291
292 <varlistentry id="fdformat">
293 <term><command>fdformat</command></term>
294 <listitem>
295 <para>Low-level formats a floppy disk</para>
296 <indexterm zone="ch-system-util-linux fdformat">
297 <primary sortas="b-fdformat">fdformat</primary>
298 </indexterm>
299 </listitem>
300 </varlistentry>
301
302 <varlistentry id="fdisk">
303 <term><command>fdisk</command></term>
304 <listitem>
305 <para>Manipulates the paritition table of the given device</para>
306 <indexterm zone="ch-system-util-linux fdisk">
307 <primary sortas="b-fdisk">fdisk</primary>
308 </indexterm>
309 </listitem>
310 </varlistentry>
311
312 <varlistentry id="findfs">
313 <term><command>findfs</command></term>
314 <listitem>
315 <para>Finds a file system by label or Universally Unique Identifier
316 (UUID)</para>
317 <indexterm zone="ch-system-util-linux findfs">
318 <primary sortas="b-findfs">findfs</primary>
319 </indexterm>
320 </listitem>
321 </varlistentry>
322
323 <varlistentry id="findmnt">
324 <term><command>findmnt</command></term>
325 <listitem>
326 <para>Is a command line interface to the libmount library
327 for work with mountinfo, fstab and mtab files</para>
328 <indexterm zone="ch-system-util-linux findmnt">
329 <primary sortas="b-findmnt">findmnt</primary>
330 </indexterm>
331 </listitem>
332 </varlistentry>
333
334 <varlistentry id="flock">
335 <term><command>flock</command></term>
336 <listitem>
337 <para>Acquires a file lock and then executes a command with the lock
338 held</para>
339 <indexterm zone="ch-system-util-linux flock">
340 <primary sortas="b-flock">flock</primary>
341 </indexterm>
342 </listitem>
343 </varlistentry>
344
345 <varlistentry id="fsck">
346 <term><command>fsck</command></term>
347 <listitem>
348 <para>Is used to check, and optionally repair, file systems</para>
349 <indexterm zone="ch-system-util-linux fsck">
350 <primary sortas="b-fsck">fsck</primary>
351 </indexterm>
352 </listitem>
353 </varlistentry>
354
355 <varlistentry id="fsck.cramfs">
356 <term><command>fsck.cramfs</command></term>
357 <listitem>
358 <para>Performs a consistency check on the Cramfs file system on the
359 given device</para>
360 <indexterm zone="ch-system-util-linux fsck.cramfs">
361 <primary sortas="b-fsck.cramfs">fsck.cramfs</primary>
362 </indexterm>
363 </listitem>
364 </varlistentry>
365
366 <varlistentry id="fsck.minix">
367 <term><command>fsck.minix</command></term>
368 <listitem>
369 <para>Performs a consistency check on the Minix file system on the
370 given device</para>
371 <indexterm zone="ch-system-util-linux fsck.minix">
372 <primary sortas="b-fsck.minix">fsck.minix</primary>
373 </indexterm>
374 </listitem>
375 </varlistentry>
376
377 <varlistentry id="fsfreeze">
378 <term><command>fsfreeze</command></term>
379 <listitem>
380 <para>Is a very simple wrapper around FIFREEZE/FITHAW ioctl
381 kernel driver operations</para>
382 <indexterm zone="ch-system-util-linux fsfreeze">
383 <primary sortas="b-fsfreeze">fsfreeze</primary>
384 </indexterm>
385 </listitem>
386 </varlistentry>
387
388 <varlistentry id="fstrim">
389 <term><command>fstrim</command></term>
390 <listitem>
391 <para>Discards unused blocks on a mounted filesystem</para>
392 <indexterm zone="ch-system-util-linux fstrim">
393 <primary sortas="b-fstrim">fstrim</primary>
394 </indexterm>
395 </listitem>
396 </varlistentry>
397
398 <varlistentry id="getopt">
399 <term><command>getopt</command></term>
400 <listitem>
401 <para>Parses options in the given command line</para>
402 <indexterm zone="ch-system-util-linux getopt">
403 <primary sortas="b-getopt">getopt</primary>
404 </indexterm>
405 </listitem>
406 </varlistentry>
407
408 <varlistentry id="hexdump">
409 <term><command>hexdump</command></term>
410 <listitem>
411 <para>Dumps the given file in hexadecimal or in another given
412 format</para>
413 <indexterm zone="ch-system-util-linux hexdump">
414 <primary sortas="b-hexdump">hexdump</primary>
415 </indexterm>
416 </listitem>
417 </varlistentry>
418
419 <varlistentry id="hwclock">
420 <term><command>hwclock</command></term>
421 <listitem>
422 <para>Reads or sets the system's hardware clock, also called
423 the Real-Time Clock (RTC) or Basic Input-Output System (BIOS)
424 clock</para>
425 <indexterm zone="ch-system-util-linux hwclock">
426 <primary sortas="b-hwclock">hwclock</primary>
427 </indexterm>
428 </listitem>
429 </varlistentry>
430
431 <varlistentry id="i386">
432 <term><command>i386</command></term>
433 <listitem>
434 <para>A symbolic link to setarch</para>
435 <indexterm zone="ch-system-util-linux i386">
436 <primary sortas="b-i386">i386</primary>
437 </indexterm>
438 </listitem>
439 </varlistentry>
440
441 <varlistentry id="ionice">
442 <term><command>ionice</command></term>
443 <listitem>
444 <para>Gets or sets the io scheduling class and priority for a program</para>
445 <indexterm zone="ch-system-util-linux ionice">
446 <primary sortas="b-ionice">ionice</primary>
447 </indexterm>
448 </listitem>
449 </varlistentry>
450
451 <varlistentry id="ipcmk">
452 <term><command>ipcmk</command></term>
453 <listitem>
454 <para>Creates various IPC resources</para>
455 <indexterm zone="ch-system-util-linux ipcmk">
456 <primary sortas="b-ipcmk">ipcmk</primary>
457 </indexterm>
458 </listitem>
459 </varlistentry>
460
461 <varlistentry id="ipcrm">
462 <term><command>ipcrm</command></term>
463 <listitem>
464 <para>Removes the given Inter-Process Communication (IPC) resource</para>
465 <indexterm zone="ch-system-util-linux ipcrm">
466 <primary sortas="b-ipcrm">ipcrm</primary>
467 </indexterm>
468 </listitem>
469 </varlistentry>
470
471 <varlistentry id="ipcs">
472 <term><command>ipcs</command></term>
473 <listitem>
474 <para>Provides IPC status information</para>
475 <indexterm zone="ch-system-util-linux ipcs">
476 <primary sortas="b-ipcs">ipcs</primary>
477 </indexterm>
478 </listitem>
479 </varlistentry>
480
481 <varlistentry id="isosize">
482 <term><command>isosize</command></term>
483 <listitem>
484 <para>Reports the size of an iso9660 file system</para>
485 <indexterm zone="ch-system-util-linux isosize">
486 <primary sortas="b-isosize">isosize</primary>
487 </indexterm>
488 </listitem>
489 </varlistentry>
490
491 <varlistentry id="ldattach">
492 <term><command>ldattach</command></term>
493 <listitem>
494 <para>Attaches a line discipline to a serial line</para>
495 <indexterm zone="ch-system-util-linux ldattach">
496 <primary sortas="b-ldattach">ldattach</primary>
497 </indexterm>
498 </listitem>
499 </varlistentry>
500
501 <varlistentry id="linux32">
502 <term><command>linux32</command></term>
503 <listitem>
504 <para>A symbolic link to setarch</para>
505 <indexterm zone="ch-system-util-linux linux32">
506 <primary sortas="b-linux32">linux32</primary>
507 </indexterm>
508 </listitem>
509 </varlistentry>
510
511 <varlistentry id="linux64">
512 <term><command>linux64</command></term>
513 <listitem>
514 <para>A symbolic link to setarch</para>
515 <indexterm zone="ch-system-util-linux linux64">
516 <primary sortas="b-linux64">linux64</primary>
517 </indexterm>
518 </listitem>
519 </varlistentry>
520
521 <varlistentry id="logger">
522 <term><command>logger</command></term>
523 <listitem>
524 <para>Enters the given message into the system log</para>
525 <indexterm zone="ch-system-util-linux logger">
526 <primary sortas="b-logger">logger</primary>
527 </indexterm>
528 </listitem>
529 </varlistentry>
530
531 <varlistentry id="look">
532 <term><command>look</command></term>
533 <listitem>
534 <para>Displays lines that begin with the given string</para>
535 <indexterm zone="ch-system-util-linux look">
536 <primary sortas="b-look">look</primary>
537 </indexterm>
538 </listitem>
539 </varlistentry>
540
541 <varlistentry id="losetup">
542 <term><command>losetup</command></term>
543 <listitem>
544 <para>Sets up and controls loop devices</para>
545 <indexterm zone="ch-system-util-linux losetup">
546 <primary sortas="b-losetup">losetup</primary>
547 </indexterm>
548 </listitem>
549 </varlistentry>
550
551 <varlistentry id="lsblk">
552 <term><command>lsblk</command></term>
553 <listitem>
554 <para>Lists information about all or selected block devices in
555 a tree-like format.</para>
556 <indexterm zone="ch-system-util-linux lsblk">
557 <primary sortas="b-lsblk">lsblk</primary>
558 </indexterm>
559 </listitem>
560 </varlistentry>
561
562 <varlistentry id="lscpu">
563 <term><command>lscpu</command></term>
564 <listitem>
565 <para>Prints CPU architechture information</para>
566 <indexterm zone="ch-system-util-linux lscpu">
567 <primary sortas="b-lscpu">lscpu</primary>
568 </indexterm>
569 </listitem>
570 </varlistentry>
571
572 <varlistentry id="mcookie">
573 <term><command>mcookie</command></term>
574 <listitem>
575 <para>Generates magic cookies (128-bit random hexadecimal numbers) for
576 <command>xauth</command></para>
577 <indexterm zone="ch-system-util-linux mcookie">
578 <primary sortas="b-mcookie">mcookie</primary>
579 </indexterm>
580 </listitem>
581 </varlistentry>
582
583 <varlistentry id="mkfs">
584 <term><command>mkfs</command></term>
585 <listitem>
586 <para>Builds a file system on a device (usually a hard disk
587 partition)</para>
588 <indexterm zone="ch-system-util-linux mkfs">
589 <primary sortas="b-mkfs">mkfs</primary>
590 </indexterm>
591 </listitem>
592 </varlistentry>
593
594 <varlistentry id="mkfs.bfs">
595 <term><command>mkfs.bfs</command></term>
596 <listitem>
597 <para>Creates a Santa Cruz Operations (SCO) bfs file system</para>
598 <indexterm zone="ch-system-util-linux mkfs.bfs">
599 <primary sortas="b-mkfs.bfs">mkfs.bfs</primary>
600 </indexterm>
601 </listitem>
602 </varlistentry>
603
604 <varlistentry id="mkfs.cramfs">
605 <term><command>mkfs.cramfs</command></term>
606 <listitem>
607 <para>Creates a cramfs file system</para>
608 <indexterm zone="ch-system-util-linux mkfs.cramfs">
609 <primary sortas="b-mkfs.cramfs">mkfs.cramfs</primary>
610 </indexterm>
611 </listitem>
612 </varlistentry>
613
614 <varlistentry id="mkfs.minix">
615 <term><command>mkfs.minix</command></term>
616 <listitem>
617 <para>Creates a Minix file system</para>
618 <indexterm zone="ch-system-util-linux mkfs.minix">
619 <primary sortas="b-mkfs.minix">mkfs.minix</primary>
620 </indexterm>
621 </listitem>
622 </varlistentry>
623
624 <varlistentry id="mkswap">
625 <term><command>mkswap</command></term>
626 <listitem>
627 <para>Initializes the given device or file to be used as a swap
628 area</para>
629 <indexterm zone="ch-system-util-linux mkswap">
630 <primary sortas="b-mkswap">mkswap</primary>
631 </indexterm>
632 </listitem>
633 </varlistentry>
634
635 <varlistentry id="more">
636 <term><command>more</command></term>
637 <listitem>
638 <para>A filter for paging through text one screen at a time</para>
639 <indexterm zone="ch-system-util-linux more">
640 <primary sortas="b-more">more</primary>
641 </indexterm>
642 </listitem>
643 </varlistentry>
644
645 <varlistentry id="mount">
646 <term><command>mount</command></term>
647 <listitem>
648 <para>Attaches the file system on the given device to a specified
649 directory in the file-system tree</para>
650 <indexterm zone="ch-system-util-linux mount">
651 <primary sortas="b-mount">mount</primary>
652 </indexterm>
653 </listitem>
654 </varlistentry>
655
656 <varlistentry id="mountpoint">
657 <term><command>mountpoint</command></term>
658 <listitem>
659 <para>Checks if the directory is a mountpoint</para>
660 <indexterm zone="ch-system-util-linux mountpoint">
661 <primary sortas="b-mountpoint">mountpoint</primary>
662 </indexterm>
663 </listitem>
664 </varlistentry>
665
666 <varlistentry id="namei">
667 <term><command>namei</command></term>
668 <listitem>
669 <para>Shows the symbolic links in the given pathnames</para>
670 <indexterm zone="ch-system-util-linux namei">
671 <primary sortas="b-namei">namei</primary>
672 </indexterm>
673 </listitem>
674 </varlistentry>
675
676 <varlistentry id="partx">
677 <term><command>partx</command></term>
678 <listitem>
679 <para>Tells the kernel about the presence and numbering of on-disk
680 partitions</para>
681 <indexterm zone="ch-system-util-linux partx">
682 <primary sortas="b-partx">partx</primary>
683 </indexterm>
684 </listitem>
685 </varlistentry>
686
687 <varlistentry id="pg">
688 <term><command>pg</command></term>
689 <listitem>
690 <para>Displays a text file one screen full at a time</para>
691 <indexterm zone="ch-system-util-linux pg">
692 <primary sortas="b-pg">pg</primary>
693 </indexterm>
694 </listitem>
695 </varlistentry>
696
697 <varlistentry id="pivot_root">
698 <term><command>pivot_root</command></term>
699 <listitem>
700 <para>Makes the given file system the new root file system of the
701 current process</para>
702 <indexterm zone="ch-system-util-linux pivot_root">
703 <primary sortas="b-pivot_root">pivot_root</primary>
704 </indexterm>
705 </listitem>
706 </varlistentry>
707
708 <varlistentry id="prlimit">
709 <term><command>prlimit</command></term>
710 <listitem>
711 <para>Get and set a process' resource limits</para>
712 <indexterm zone="ch-system-util-linux prlimit">
713 <primary sortas="b-prlimit">prlimit</primary>
714 </indexterm>
715 </listitem>
716 </varlistentry>
717
718 <varlistentry id="raw">
719 <term><command>raw</command></term>
720 <listitem>
721 <para>Bind a Linux raw character device to a block device</para>
722 <indexterm zone="ch-system-util-linux raw">
723 <primary sortas="b-raw">raw</primary>
724 </indexterm>
725 </listitem>
726 </varlistentry>
727
728 <varlistentry id="readprofile">
729 <term><command>readprofile</command></term>
730 <listitem>
731 <para>Reads kernel profiling information</para>
732 <indexterm zone="ch-system-util-linux readprofile">
733 <primary sortas="b-readprofile">readprofile</primary>
734 </indexterm>
735 </listitem>
736 </varlistentry>
737
738 <varlistentry id="rename">
739 <term><command>rename</command></term>
740 <listitem>
741 <para>Renames the given files, replacing a given string with
742 another</para>
743 <indexterm zone="ch-system-util-linux rename">
744 <primary sortas="b-rename">rename</primary>
745 </indexterm>
746 </listitem>
747 </varlistentry>
748
749 <varlistentry id="renice">
750 <term><command>renice</command></term>
751 <listitem>
752 <para>Alters the priority of running processes</para>
753 <indexterm zone="ch-system-util-linux renice">
754 <primary sortas="b-renice">renice</primary>
755 </indexterm>
756 </listitem>
757 </varlistentry>
758
759 <varlistentry id="rev">
760 <term><command>rev</command></term>
761 <listitem>
762 <para>Reverses the lines of a given file</para>
763 <indexterm zone="ch-system-util-linux rev">
764 <primary sortas="b-rev">rev</primary>
765 </indexterm>
766 </listitem>
767 </varlistentry>
768
769 <varlistentry id="rtcwake">
770 <term><command>rtcwake</command></term>
771 <listitem>
772 <para>Used to enter a system sleep state until specified wakeup
773 time</para>
774 <indexterm zone="ch-system-util-linux rtcwake">
775 <primary sortas="b-rtcwake">rtcwake</primary>
776 </indexterm>
777 </listitem>
778 </varlistentry>
779
780 <varlistentry id="script">
781 <term><command>script</command></term>
782 <listitem>
783 <para>Makes a typescript of a terminal session</para>
784 <indexterm zone="ch-system-util-linux script">
785 <primary sortas="b-script">script</primary>
786 </indexterm>
787 </listitem>
788 </varlistentry>
789
790 <varlistentry id="scriptreplay">
791 <term><command>scriptreplay</command></term>
792 <listitem>
793 <para>Plays back typescripts using timing information</para>
794 <indexterm zone="ch-system-util-linux scriptreplay">
795 <primary sortas="b-scriptreplay">scriptreplay</primary>
796 </indexterm>
797 </listitem>
798 </varlistentry>
799
800 <varlistentry id="setarch">
801 <term><command>setarch</command></term>
802 <listitem>
803 <para>Changes reported architecture in a new program environment and
804 sets personality flags</para>
805 <indexterm zone="ch-system-util-linux setarch">
806 <primary sortas="b-setarch">setarch</primary>
807 </indexterm>
808 </listitem>
809 </varlistentry>
810
811 <varlistentry id="setsid">
812 <term><command>setsid</command></term>
813 <listitem>
814 <para>Runs the given program in a new session</para>
815 <indexterm zone="ch-system-util-linux setsid">
816 <primary sortas="b-setsid">setsid</primary>
817 </indexterm>
818 </listitem>
819 </varlistentry>
820
821 <varlistentry id="setterm">
822 <term><command>setterm</command></term>
823 <listitem>
824 <para>Sets terminal attributes</para>
825 <indexterm zone="ch-system-util-linux setterm">
826 <primary sortas="b-setterm">setterm</primary>
827 </indexterm>
828 </listitem>
829 </varlistentry>
830
831 <varlistentry id="sfdisk">
832 <term><command>sfdisk</command></term>
833 <listitem>
834 <para>A disk partition table manipulator</para>
835 <indexterm zone="ch-system-util-linux sfdisk">
836 <primary sortas="b-sfdisk">sfdisk</primary>
837 </indexterm>
838 </listitem>
839 </varlistentry>
840
841 <varlistentry id="swaplabel">
842 <term><command>swaplabel</command></term>
843 <listitem>
844 <para>Allows to change swaparea UUID and label</para>
845 <indexterm zone="ch-system-util-linux swaplabel">
846 <primary sortas="b-swaplabel">swaplabel</primary>
847 </indexterm>
848 </listitem>
849 </varlistentry>
850
851 <varlistentry id="swapoff">
852 <term><command>swapoff</command></term>
853 <listitem>
854 <para>Disables devices and files for paging and swapping</para>
855 <indexterm zone="ch-system-util-linux swapoff">
856 <primary sortas="b-swapoff">swapoff</primary>
857 </indexterm>
858 </listitem>
859 </varlistentry>
860
861 <varlistentry id="swapon">
862 <term><command>swapon</command></term>
863 <listitem>
864 <para>Enables devices and files for paging and swapping and
865 lists the devices and files currently in use</para>
866 <indexterm zone="ch-system-util-linux swapon">
867 <primary sortas="b-swapon">swapon</primary>
868 </indexterm>
869 </listitem>
870 </varlistentry>
871
872 <varlistentry id="switch_root">
873 <term><command>switch_root</command></term>
874 <listitem>
875 <para>Switches to another filesystem as the root of the mount tree</para>
876 <indexterm zone="ch-system-util-linux switch_root">
877 <primary sortas="b-switch_root">switch_root</primary>
878 </indexterm>
879 </listitem>
880 </varlistentry>
881
882 <varlistentry id="tailf">
883 <term><command>tailf</command></term>
884 <listitem>
885 <para>Tracks the growth of a log file. Displays the last 10 lines
886 of a log file, then continues displaying any new entries in the
887 log file as they are created</para>
888 <indexterm zone="ch-system-util-linux tailf">
889 <primary sortas="b-tailf">tailf</primary>
890 </indexterm>
891 </listitem>
892 </varlistentry>
893
894 <varlistentry id="taskset">
895 <term><command>taskset</command></term>
896 <listitem>
897 <para>Retrieves or sets a process' CPU affinity</para>
898 <indexterm zone="ch-system-util-linux taskset">
899 <primary sortas="b-taskset">taskset</primary>
900 </indexterm>
901 </listitem>
902 </varlistentry>
903
904 <varlistentry id="tunelp">
905 <term><command>tunelp</command></term>
906 <listitem>
907 <para>Tunes the parameters of the line printer</para>
908 <indexterm zone="ch-system-util-linux tunelp">
909 <primary sortas="b-tunelp">tunelp</primary>
910 </indexterm>
911 </listitem>
912 </varlistentry>
913
914 <varlistentry id="ul">
915 <term><command>ul</command></term>
916 <listitem>
917 <para>A filter for translating underscores into escape sequences
918 indicating underlining for the terminal in use</para>
919 <indexterm zone="ch-system-util-linux ul">
920 <primary sortas="b-ul">ul</primary>
921 </indexterm>
922 </listitem>
923 </varlistentry>
924
925 <varlistentry id="umount">
926 <term><command>umount</command></term>
927 <listitem>
928 <para>Disconnects a file system from the system's file tree</para>
929 <indexterm zone="ch-system-util-linux umount">
930 <primary sortas="b-umount">umount</primary>
931 </indexterm>
932 </listitem>
933 </varlistentry>
934
935 <varlistentry id="unshare">
936 <term><command>unshare</command></term>
937 <listitem>
938 <para>Runs a program with some namespaces unshared from parent</para>
939 <indexterm zone="ch-system-util-linux unshare">
940 <primary sortas="b-unshare">unshare</primary>
941 </indexterm>
942 </listitem>
943 </varlistentry>
944
945 <varlistentry id="uuidd">
946 <term><command>uuidd</command></term>
947 <listitem>
948 <para>A daemon used by the UUID library to generate time-based
949 UUIDs in a secure and guranteed-unique fashion.</para>
950 <indexterm zone="ch-system-util-linux uuidd">
951 <primary sortas="b-uuidd">uuidd</primary>
952 </indexterm>
953 </listitem>
954 </varlistentry>
955
956 <varlistentry id="uuidgen">
957 <term><command>uuidgen</command></term>
958 <listitem>
959 <para>Creates new UUIDs. Each new UUID can reasonably be considered
960 unique among all UUIDs created, on the local system and on other
961 systems, in the past and in the future</para>
962 <indexterm zone="ch-system-util-linux uuidgen">
963 <primary sortas="b-uuidgen">uuidgen</primary>
964 </indexterm>
965 </listitem>
966 </varlistentry>
967
968 <varlistentry id="wall">
969 <term><command>wall</command></term>
970 <listitem>
971 <para>Displays the contents of a file or, by default, its standard
972 input, on the terminals of all currently logged in users</para>
973 <indexterm zone="ch-system-util-linux wall">
974 <primary sortas="b-wall">wall</primary>
975 </indexterm>
976 </listitem>
977 </varlistentry>
978
979 <varlistentry id="whereis">
980 <term><command>whereis</command></term>
981 <listitem>
982 <para>Reports the location of the binary, source, and man page
983 for the given command</para>
984 <indexterm zone="ch-system-util-linux whereis">
985 <primary sortas="b-whereis">whereis</primary>
986 </indexterm>
987 </listitem>
988 </varlistentry>
989
990 <varlistentry id="wipefs">
991 <term><command>wipefs</command></term>
992 <listitem>
993 <para>Wipes a filesystem signature from a device</para>
994 <indexterm zone="ch-system-util-linux wipefs">
995 <primary sortas="b-wipefs">wipefs</primary>
996 </indexterm>
997 </listitem>
998 </varlistentry>
999
1000 <varlistentry id="x86_64">
1001 <term><command>x86_64</command></term>
1002 <listitem>
1003 <para>A symbolic link to setarch</para>
1004 <indexterm zone="ch-system-util-linux x86_64">
1005 <primary sortas="b-x86_64">x86_64</primary>
1006 </indexterm>
1007 </listitem>
1008 </varlistentry>
1009
1010 <varlistentry id="libblkid">
1011 <term><filename class="libraryfile">libblkid</filename></term>
1012 <listitem>
1013 <para>Contains routines for device identification and token
1014 extraction</para>
1015 <indexterm zone="ch-system-util-linux libblkid">
1016 <primary sortas="c-libblkid">libblkid</primary>
1017 </indexterm>
1018 </listitem>
1019 </varlistentry>
1020
1021 <varlistentry id="libuuid">
1022 <term><filename class="libraryfile">libuuid</filename></term>
1023 <listitem>
1024 <para>Contains routines for generating unique identifiers for objects
1025 that may be accessible beyond the local system</para>
1026 <indexterm zone="ch-system-util-linux libuuid">
1027 <primary sortas="c-libuuid">libuuid</primary>
1028 </indexterm>
1029 </listitem>
1030 </varlistentry>
1031
1032 </variablelist>
1033
1034 </sect2>
1035
1036</sect1>
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