source: chapter06/util-linux.xml@ f55c13f

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Last change on this file since f55c13f was f55c13f, checked in by Matthew Burgess <matthew@…>, 10 years ago

Skip test failures in Util-Linux's 'last'.

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@10373 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

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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 -i -e 's@etc/adjtime@var/lib/hwclock/adjtime@g' \
53 $(grep -rl '/etc/adjtime' .)
54
55mkdir -pv /var/lib/hwclock</userinput></screen>
56
57 </sect2>
58
59 <sect2 role="installation">
60 <title>Installation of Util-linux</title>
61
62<screen><userinput remap="configure">./configure --disable-su --disable-sulogin --disable-login</userinput></screen>
63
64 <variablelist>
65 <title>The meaning of the configure option:</title>
66
67 <varlistentry>
68 <term><parameter>--disable-*</parameter></term>
69 <listitem>
70 <para>These switches disable building su, sulogin, and login. They
71 duplicate the same programs provided by <xref
72 linkend='ch-system-shadow'/> and <xref linkend='ch-system-sysvinit'/>.
73 They also require
74 <ulink url="&blfs-root;/view/svn/postlfs/linux-pam.html">Linux-PAM</ulink>
75 which is not available in LFS.</para>
76 </listitem>
77 </varlistentry>
78 </variablelist>
79
80 <para>Compile the package:</para>
81
82<screen><userinput remap="make">make</userinput></screen>
83
84 <para>If desired, run the test suite as a non-root user:</para>
85
86 <warning><para>Running the test suite as the root user can be harmful to
87 your system. To run it, the kernel CONFIG_SCSI_DEBUG option for the kernel
88 must be available in the currently running system. The CONFIG_SCSI_DEBUG
89 option must be built as a module. Building it into the kernel will prevent
90 booting. For complete coverage, other BLFS packages must be installed. If
91 desired, this test can be run after rebooting into the completed LFS system
92 and running:</para>
93
94 <screen role="nodump"><userinput>bash tests/run.sh --srcdir=$PWD --builddir=$PWD</userinput></screen>
95 </warning>
96
97 <note><para>Two tests, last/ipv6 and last/last, fail in the chroot environment
98 due to the DNS resolver not being active yet. If the tests are rerun after
99 booting, they pass.</para></note>
100
101 <screen><userinput remap="test">chown -Rv nobody .
102su nobody -s /bin/bash -c "PATH=$PATH make -k check"</userinput></screen>
103
104 <para>Install the package:</para>
105
106<screen><userinput remap="install">make install</userinput></screen>
107
108 </sect2>
109
110 <sect2 id="contents-utillinux" role="content">
111 <title>Contents of Util-linux</title>
112
113 <segmentedlist>
114 <segtitle>Installed programs</segtitle>
115 <segtitle>Installed libraries</segtitle>
116 <segtitle>Installed directories</segtitle>
117
118 <seglistitem>
119 <seg>addpart, agetty, blkid, blockdev, cal, cfdisk, chcpu,
120 chrt, col, colcrt, colrm, column, ctrlaltdel, cytune, delpart,
121 dmesg, eject, fallocate, fdformat, fdisk, findfs, findmnt, flock, fsck,
122 fsck.cramfs, fsck.minix, fsfreeze, fstrim, getopt, hexdump, hwclock, i386,
123 ionice, ipcmk, ipcrm, ipcs, isosize, ldattach, linux32, linux64,
124 logger, look, losetup, lsblk, lscpu, lslocks, mcookie, mkfs, mkfs.bfs,
125 mkfs.cramfs, mkfs.minix, mkswap, more, mount, mountpoint, namei, partx,
126 pg, pivot_root, prlimit, raw, readprofile, rename, renice, resizepart,
127 rev, rtcwake, script, scriptreplay, setarch, setsid, setterm, sfdisk,
128 swaplabel, swapoff (link to swapon), swapon, switch_root, tailf,
129 taskset, ul, umount, unshare, utmpdump, uuidd, uuidgen, wall,
130 wdctl, whereis, wipefs, and x86_64</seg>
131
132 <seg>libblkid.{a,so}, libmount.{a,so}, libuuid.{a,so}</seg>
133
134 <seg>/usr/include/blkid, /usr/include/libmount, /usr/include/uuid,
135 /usr/share/getopt, /var/lib/hwclock</seg>
136 </seglistitem>
137 </segmentedlist>
138
139 <variablelist>
140 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
141 <?dbfo list-presentation="list"?>
142 <?dbhtml list-presentation="table"?>
143
144 <varlistentry id="addpart">
145 <term><command>addpart</command></term>
146 <listitem>
147 <para>Informs the Linux kernel of new partitions</para>
148 <indexterm zone="ch-system-util-linux addpart">
149 <primary sortas="b-addpart">addpart</primary>
150 </indexterm>
151 </listitem>
152 </varlistentry>
153
154 <varlistentry id="agetty">
155 <term><command>agetty</command></term>
156 <listitem>
157 <para>Opens a tty port, prompts for a login name,
158 and then invokes the <command>login</command> program</para>
159 <indexterm zone="ch-system-util-linux agetty">
160 <primary sortas="b-agetty">agetty</primary>
161 </indexterm>
162 </listitem>
163 </varlistentry>
164
165 <varlistentry id="blkid">
166 <term><command>blkid</command></term>
167 <listitem>
168 <para>A command line utility to locate and print block device
169 attributes</para>
170 <indexterm zone="ch-system-util-linux blkid">
171 <primary sortas="b-blkid">blkid</primary>
172 </indexterm>
173 </listitem>
174 </varlistentry>
175
176 <varlistentry id="blockdev">
177 <term><command>blockdev</command></term>
178 <listitem>
179 <para>Allows users to call block device ioctls from the command
180 line</para>
181 <indexterm zone="ch-system-util-linux blockdev">
182 <primary sortas="b-blockdev">blockdev</primary>
183 </indexterm>
184 </listitem>
185 </varlistentry>
186
187 <varlistentry id="cal">
188 <term><command>cal</command></term>
189 <listitem>
190 <para>Displays a simple calendar</para>
191 <indexterm zone="ch-system-util-linux cal">
192 <primary sortas="b-cal">cal</primary>
193 </indexterm>
194 </listitem>
195 </varlistentry>
196
197 <varlistentry id="cfdisk">
198 <term><command>cfdisk</command></term>
199 <listitem>
200 <para>Manipulates the partition table of the given device</para>
201 <indexterm zone="ch-system-util-linux cfdisk">
202 <primary sortas="b-cfdisk">cfdisk</primary>
203 </indexterm>
204 </listitem>
205 </varlistentry>
206
207 <varlistentry id="chcpu">
208 <term><command>chcpu</command></term>
209 <listitem>
210 <para>Modifies the state of CPUs</para>
211 <indexterm zone="ch-system-util-linux chcpu">
212 <primary sortas="b-chcpu">chcpu</primary>
213 </indexterm>
214 </listitem>
215 </varlistentry>
216
217 <varlistentry id="chrt">
218 <term><command>chrt</command></term>
219 <listitem>
220 <para>Manipulates real-time attributes of a process</para>
221 <indexterm zone="ch-system-util-linux chrt">
222 <primary sortas="b-chrt">chrt</primary>
223 </indexterm>
224 </listitem>
225 </varlistentry>
226
227 <varlistentry id="col">
228 <term><command>col</command></term>
229 <listitem>
230 <para>Filters out reverse line feeds</para>
231 <indexterm zone="ch-system-util-linux col">
232 <primary sortas="b-col">col</primary>
233 </indexterm>
234 </listitem>
235 </varlistentry>
236
237 <varlistentry id="colcrt">
238 <term><command>colcrt</command></term>
239 <listitem>
240 <para>Filters <command>nroff</command> output for terminals
241 that lack some capabilities, such as overstriking and half-lines</para>
242 <indexterm zone="ch-system-util-linux colcrt">
243 <primary sortas="b-colcrt">colcrt</primary>
244 </indexterm>
245 </listitem>
246 </varlistentry>
247
248 <varlistentry id="colrm">
249 <term><command>colrm</command></term>
250 <listitem>
251 <para>Filters out the given columns</para>
252 <indexterm zone="ch-system-util-linux colrm">
253 <primary sortas="b-colrm">colrm</primary>
254 </indexterm>
255 </listitem>
256 </varlistentry>
257
258 <varlistentry id="column">
259 <term><command>column</command></term>
260 <listitem>
261 <para>Formats a given file into multiple columns</para>
262 <indexterm zone="ch-system-util-linux column">
263 <primary sortas="b-column">column</primary>
264 </indexterm>
265 </listitem>
266 </varlistentry>
267
268 <varlistentry id="ctrlaltdel">
269 <term><command>ctrlaltdel</command></term>
270 <listitem>
271 <para>Sets the function of the Ctrl+Alt+Del key combination to a
272 hard or a soft reset</para>
273 <indexterm zone="ch-system-util-linux ctrlaltdel">
274 <primary sortas="b-ctrlaltdel">ctrlaltdel</primary>
275 </indexterm>
276 </listitem>
277 </varlistentry>
278
279 <varlistentry id="cytune">
280 <term><command>cytune</command></term>
281 <listitem>
282 <para>Tunes the parameters of the serial line drivers for
283 Cyclades cards</para>
284 <indexterm zone="ch-system-util-linux cytune">
285 <primary sortas="b-cytune">cytune</primary>
286 </indexterm>
287 </listitem>
288 </varlistentry>
289
290 <varlistentry id="delpart">
291 <term><command>delpart</command></term>
292 <listitem>
293 <para>Asks the Linux kernel to remove a partition</para>
294 <indexterm zone="ch-system-util-linux delpart">
295 <primary sortas="b-delpart">delpart</primary>
296 </indexterm>
297 </listitem>
298 </varlistentry>
299
300 <varlistentry id="dmesg">
301 <term><command>dmesg</command></term>
302 <listitem>
303 <para>Dumps the kernel boot messages</para>
304 <indexterm zone="ch-system-util-linux dmesg">
305 <primary sortas="b-dmesg">dmesg</primary>
306 </indexterm>
307 </listitem>
308 </varlistentry>
309
310 <varlistentry id="eject">
311 <term><command>eject</command></term>
312 <listitem>
313 <para>Ejects removable media</para>
314 <indexterm zone="ch-system-util-linux eject">
315 <primary sortas="b-eject">eject</primary>
316 </indexterm>
317 </listitem>
318 </varlistentry>
319
320 <varlistentry id="fallocate">
321 <term><command>fallocate</command></term>
322 <listitem>
323 <para>Preallocates space to a file</para>
324 <indexterm zone="ch-system-util-linux fallocate">
325 <primary sortas="b-fallocate">fallocate</primary>
326 </indexterm>
327 </listitem>
328 </varlistentry>
329
330 <varlistentry id="fdformat">
331 <term><command>fdformat</command></term>
332 <listitem>
333 <para>Low-level formats a floppy disk</para>
334 <indexterm zone="ch-system-util-linux fdformat">
335 <primary sortas="b-fdformat">fdformat</primary>
336 </indexterm>
337 </listitem>
338 </varlistentry>
339
340 <varlistentry id="fdisk">
341 <term><command>fdisk</command></term>
342 <listitem>
343 <para>Manipulates the paritition table of the given device</para>
344 <indexterm zone="ch-system-util-linux fdisk">
345 <primary sortas="b-fdisk">fdisk</primary>
346 </indexterm>
347 </listitem>
348 </varlistentry>
349
350 <varlistentry id="findfs">
351 <term><command>findfs</command></term>
352 <listitem>
353 <para>Finds a file system by label or Universally Unique Identifier
354 (UUID)</para>
355 <indexterm zone="ch-system-util-linux findfs">
356 <primary sortas="b-findfs">findfs</primary>
357 </indexterm>
358 </listitem>
359 </varlistentry>
360
361 <varlistentry id="findmnt">
362 <term><command>findmnt</command></term>
363 <listitem>
364 <para>Is a command line interface to the libmount library
365 for work with mountinfo, fstab and mtab files</para>
366 <indexterm zone="ch-system-util-linux findmnt">
367 <primary sortas="b-findmnt">findmnt</primary>
368 </indexterm>
369 </listitem>
370 </varlistentry>
371
372 <varlistentry id="flock">
373 <term><command>flock</command></term>
374 <listitem>
375 <para>Acquires a file lock and then executes a command with the lock
376 held</para>
377 <indexterm zone="ch-system-util-linux flock">
378 <primary sortas="b-flock">flock</primary>
379 </indexterm>
380 </listitem>
381 </varlistentry>
382
383 <varlistentry id="fsck">
384 <term><command>fsck</command></term>
385 <listitem>
386 <para>Is used to check, and optionally repair, file systems</para>
387 <indexterm zone="ch-system-util-linux fsck">
388 <primary sortas="b-fsck">fsck</primary>
389 </indexterm>
390 </listitem>
391 </varlistentry>
392
393 <varlistentry id="fsck.cramfs">
394 <term><command>fsck.cramfs</command></term>
395 <listitem>
396 <para>Performs a consistency check on the Cramfs file system on the
397 given device</para>
398 <indexterm zone="ch-system-util-linux fsck.cramfs">
399 <primary sortas="b-fsck.cramfs">fsck.cramfs</primary>
400 </indexterm>
401 </listitem>
402 </varlistentry>
403
404 <varlistentry id="fsck.minix">
405 <term><command>fsck.minix</command></term>
406 <listitem>
407 <para>Performs a consistency check on the Minix file system on the
408 given device</para>
409 <indexterm zone="ch-system-util-linux fsck.minix">
410 <primary sortas="b-fsck.minix">fsck.minix</primary>
411 </indexterm>
412 </listitem>
413 </varlistentry>
414
415 <varlistentry id="fsfreeze">
416 <term><command>fsfreeze</command></term>
417 <listitem>
418 <para>Is a very simple wrapper around FIFREEZE/FITHAW ioctl
419 kernel driver operations</para>
420 <indexterm zone="ch-system-util-linux fsfreeze">
421 <primary sortas="b-fsfreeze">fsfreeze</primary>
422 </indexterm>
423 </listitem>
424 </varlistentry>
425
426 <varlistentry id="fstrim">
427 <term><command>fstrim</command></term>
428 <listitem>
429 <para>Discards unused blocks on a mounted filesystem</para>
430 <indexterm zone="ch-system-util-linux fstrim">
431 <primary sortas="b-fstrim">fstrim</primary>
432 </indexterm>
433 </listitem>
434 </varlistentry>
435
436 <varlistentry id="getopt">
437 <term><command>getopt</command></term>
438 <listitem>
439 <para>Parses options in the given command line</para>
440 <indexterm zone="ch-system-util-linux getopt">
441 <primary sortas="b-getopt">getopt</primary>
442 </indexterm>
443 </listitem>
444 </varlistentry>
445
446 <varlistentry id="hexdump">
447 <term><command>hexdump</command></term>
448 <listitem>
449 <para>Dumps the given file in hexadecimal or in another given
450 format</para>
451 <indexterm zone="ch-system-util-linux hexdump">
452 <primary sortas="b-hexdump">hexdump</primary>
453 </indexterm>
454 </listitem>
455 </varlistentry>
456
457 <varlistentry id="hwclock">
458 <term><command>hwclock</command></term>
459 <listitem>
460 <para>Reads or sets the system's hardware clock, also called
461 the Real-Time Clock (RTC) or Basic Input-Output System (BIOS)
462 clock</para>
463 <indexterm zone="ch-system-util-linux hwclock">
464 <primary sortas="b-hwclock">hwclock</primary>
465 </indexterm>
466 </listitem>
467 </varlistentry>
468
469 <varlistentry id="i386">
470 <term><command>i386</command></term>
471 <listitem>
472 <para>A symbolic link to setarch</para>
473 <indexterm zone="ch-system-util-linux i386">
474 <primary sortas="b-i386">i386</primary>
475 </indexterm>
476 </listitem>
477 </varlistentry>
478
479 <varlistentry id="ionice">
480 <term><command>ionice</command></term>
481 <listitem>
482 <para>Gets or sets the io scheduling class and priority for a program</para>
483 <indexterm zone="ch-system-util-linux ionice">
484 <primary sortas="b-ionice">ionice</primary>
485 </indexterm>
486 </listitem>
487 </varlistentry>
488
489 <varlistentry id="ipcmk">
490 <term><command>ipcmk</command></term>
491 <listitem>
492 <para>Creates various IPC resources</para>
493 <indexterm zone="ch-system-util-linux ipcmk">
494 <primary sortas="b-ipcmk">ipcmk</primary>
495 </indexterm>
496 </listitem>
497 </varlistentry>
498
499 <varlistentry id="ipcrm">
500 <term><command>ipcrm</command></term>
501 <listitem>
502 <para>Removes the given Inter-Process Communication (IPC) resource</para>
503 <indexterm zone="ch-system-util-linux ipcrm">
504 <primary sortas="b-ipcrm">ipcrm</primary>
505 </indexterm>
506 </listitem>
507 </varlistentry>
508
509 <varlistentry id="ipcs">
510 <term><command>ipcs</command></term>
511 <listitem>
512 <para>Provides IPC status information</para>
513 <indexterm zone="ch-system-util-linux ipcs">
514 <primary sortas="b-ipcs">ipcs</primary>
515 </indexterm>
516 </listitem>
517 </varlistentry>
518
519 <varlistentry id="isosize">
520 <term><command>isosize</command></term>
521 <listitem>
522 <para>Reports the size of an iso9660 file system</para>
523 <indexterm zone="ch-system-util-linux isosize">
524 <primary sortas="b-isosize">isosize</primary>
525 </indexterm>
526 </listitem>
527 </varlistentry>
528
529 <varlistentry id="kill">
530 <term><command>kill</command></term>
531 <listitem>
532 <para>Sends signals to processes</para>
533 <indexterm zone="ch-system-util-linux kill">
534 <primary sortas="b-kill">kill</primary>
535 </indexterm>
536 </listitem>
537 </varlistentry>
538
539 <varlistentry id="ldattach">
540 <term><command>ldattach</command></term>
541 <listitem>
542 <para>Attaches a line discipline to a serial line</para>
543 <indexterm zone="ch-system-util-linux ldattach">
544 <primary sortas="b-ldattach">ldattach</primary>
545 </indexterm>
546 </listitem>
547 </varlistentry>
548
549 <varlistentry id="linux32">
550 <term><command>linux32</command></term>
551 <listitem>
552 <para>A symbolic link to setarch</para>
553 <indexterm zone="ch-system-util-linux linux32">
554 <primary sortas="b-linux32">linux32</primary>
555 </indexterm>
556 </listitem>
557 </varlistentry>
558
559 <varlistentry id="linux64">
560 <term><command>linux64</command></term>
561 <listitem>
562 <para>A symbolic link to setarch</para>
563 <indexterm zone="ch-system-util-linux linux64">
564 <primary sortas="b-linux64">linux64</primary>
565 </indexterm>
566 </listitem>
567 </varlistentry>
568
569 <varlistentry id="logger">
570 <term><command>logger</command></term>
571 <listitem>
572 <para>Enters the given message into the system log</para>
573 <indexterm zone="ch-system-util-linux logger">
574 <primary sortas="b-logger">logger</primary>
575 </indexterm>
576 </listitem>
577 </varlistentry>
578
579 <varlistentry id="look">
580 <term><command>look</command></term>
581 <listitem>
582 <para>Displays lines that begin with the given string</para>
583 <indexterm zone="ch-system-util-linux look">
584 <primary sortas="b-look">look</primary>
585 </indexterm>
586 </listitem>
587 </varlistentry>
588
589 <varlistentry id="losetup">
590 <term><command>losetup</command></term>
591 <listitem>
592 <para>Sets up and controls loop devices</para>
593 <indexterm zone="ch-system-util-linux losetup">
594 <primary sortas="b-losetup">losetup</primary>
595 </indexterm>
596 </listitem>
597 </varlistentry>
598
599 <varlistentry id="lsblk">
600 <term><command>lsblk</command></term>
601 <listitem>
602 <para>Lists information about all or selected block devices in
603 a tree-like format.</para>
604 <indexterm zone="ch-system-util-linux lsblk">
605 <primary sortas="b-lsblk">lsblk</primary>
606 </indexterm>
607 </listitem>
608 </varlistentry>
609
610 <varlistentry id="lscpu">
611 <term><command>lscpu</command></term>
612 <listitem>
613 <para>Prints CPU architecture information</para>
614 <indexterm zone="ch-system-util-linux lscpu">
615 <primary sortas="b-lscpu">lscpu</primary>
616 </indexterm>
617 </listitem>
618 </varlistentry>
619
620 <varlistentry id="lslocks">
621 <term><command>lslocks</command></term>
622 <listitem>
623 <para>Lists local system locks</para>
624 <indexterm zone="ch-system-util-linux lslocks">
625 <primary sortas="b-lslocks">lslocks</primary>
626 </indexterm>
627 </listitem>
628 </varlistentry>
629
630 <varlistentry id="mcookie">
631 <term><command>mcookie</command></term>
632 <listitem>
633 <para>Generates magic cookies (128-bit random hexadecimal numbers) for
634 <command>xauth</command></para>
635 <indexterm zone="ch-system-util-linux mcookie">
636 <primary sortas="b-mcookie">mcookie</primary>
637 </indexterm>
638 </listitem>
639 </varlistentry>
640
641 <varlistentry id="mkfs">
642 <term><command>mkfs</command></term>
643 <listitem>
644 <para>Builds a file system on a device (usually a hard disk
645 partition)</para>
646 <indexterm zone="ch-system-util-linux mkfs">
647 <primary sortas="b-mkfs">mkfs</primary>
648 </indexterm>
649 </listitem>
650 </varlistentry>
651
652 <varlistentry id="mkfs.bfs">
653 <term><command>mkfs.bfs</command></term>
654 <listitem>
655 <para>Creates a Santa Cruz Operations (SCO) bfs file system</para>
656 <indexterm zone="ch-system-util-linux mkfs.bfs">
657 <primary sortas="b-mkfs.bfs">mkfs.bfs</primary>
658 </indexterm>
659 </listitem>
660 </varlistentry>
661
662 <varlistentry id="mkfs.cramfs">
663 <term><command>mkfs.cramfs</command></term>
664 <listitem>
665 <para>Creates a cramfs file system</para>
666 <indexterm zone="ch-system-util-linux mkfs.cramfs">
667 <primary sortas="b-mkfs.cramfs">mkfs.cramfs</primary>
668 </indexterm>
669 </listitem>
670 </varlistentry>
671
672 <varlistentry id="mkfs.minix">
673 <term><command>mkfs.minix</command></term>
674 <listitem>
675 <para>Creates a Minix file system</para>
676 <indexterm zone="ch-system-util-linux mkfs.minix">
677 <primary sortas="b-mkfs.minix">mkfs.minix</primary>
678 </indexterm>
679 </listitem>
680 </varlistentry>
681
682 <varlistentry id="mkswap">
683 <term><command>mkswap</command></term>
684 <listitem>
685 <para>Initializes the given device or file to be used as a swap
686 area</para>
687 <indexterm zone="ch-system-util-linux mkswap">
688 <primary sortas="b-mkswap">mkswap</primary>
689 </indexterm>
690 </listitem>
691 </varlistentry>
692
693 <varlistentry id="more">
694 <term><command>more</command></term>
695 <listitem>
696 <para>A filter for paging through text one screen at a time</para>
697 <indexterm zone="ch-system-util-linux more">
698 <primary sortas="b-more">more</primary>
699 </indexterm>
700 </listitem>
701 </varlistentry>
702
703 <varlistentry id="mount">
704 <term><command>mount</command></term>
705 <listitem>
706 <para>Attaches the file system on the given device to a specified
707 directory in the file-system tree</para>
708 <indexterm zone="ch-system-util-linux mount">
709 <primary sortas="b-mount">mount</primary>
710 </indexterm>
711 </listitem>
712 </varlistentry>
713
714 <varlistentry id="mountpoint">
715 <term><command>mountpoint</command></term>
716 <listitem>
717 <para>Checks if the directory is a mountpoint</para>
718 <indexterm zone="ch-system-util-linux mountpoint">
719 <primary sortas="b-mountpoint">mountpoint</primary>
720 </indexterm>
721 </listitem>
722 </varlistentry>
723
724 <varlistentry id="namei">
725 <term><command>namei</command></term>
726 <listitem>
727 <para>Shows the symbolic links in the given pathnames</para>
728 <indexterm zone="ch-system-util-linux namei">
729 <primary sortas="b-namei">namei</primary>
730 </indexterm>
731 </listitem>
732 </varlistentry>
733
734 <varlistentry id="partx">
735 <term><command>partx</command></term>
736 <listitem>
737 <para>Tells the kernel about the presence and numbering of on-disk
738 partitions</para>
739 <indexterm zone="ch-system-util-linux partx">
740 <primary sortas="b-partx">partx</primary>
741 </indexterm>
742 </listitem>
743 </varlistentry>
744
745 <varlistentry id="pg">
746 <term><command>pg</command></term>
747 <listitem>
748 <para>Displays a text file one screen full at a time</para>
749 <indexterm zone="ch-system-util-linux pg">
750 <primary sortas="b-pg">pg</primary>
751 </indexterm>
752 </listitem>
753 </varlistentry>
754
755 <varlistentry id="pivot_root">
756 <term><command>pivot_root</command></term>
757 <listitem>
758 <para>Makes the given file system the new root file system of the
759 current process</para>
760 <indexterm zone="ch-system-util-linux pivot_root">
761 <primary sortas="b-pivot_root">pivot_root</primary>
762 </indexterm>
763 </listitem>
764 </varlistentry>
765
766 <varlistentry id="prlimit">
767 <term><command>prlimit</command></term>
768 <listitem>
769 <para>Get and set a process' resource limits</para>
770 <indexterm zone="ch-system-util-linux prlimit">
771 <primary sortas="b-prlimit">prlimit</primary>
772 </indexterm>
773 </listitem>
774 </varlistentry>
775
776 <varlistentry id="raw">
777 <term><command>raw</command></term>
778 <listitem>
779 <para>Bind a Linux raw character device to a block device</para>
780 <indexterm zone="ch-system-util-linux raw">
781 <primary sortas="b-raw">raw</primary>
782 </indexterm>
783 </listitem>
784 </varlistentry>
785
786 <varlistentry id="readprofile">
787 <term><command>readprofile</command></term>
788 <listitem>
789 <para>Reads kernel profiling information</para>
790 <indexterm zone="ch-system-util-linux readprofile">
791 <primary sortas="b-readprofile">readprofile</primary>
792 </indexterm>
793 </listitem>
794 </varlistentry>
795
796 <varlistentry id="rename">
797 <term><command>rename</command></term>
798 <listitem>
799 <para>Renames the given files, replacing a given string with
800 another</para>
801 <indexterm zone="ch-system-util-linux rename">
802 <primary sortas="b-rename">rename</primary>
803 </indexterm>
804 </listitem>
805 </varlistentry>
806
807 <varlistentry id="renice">
808 <term><command>renice</command></term>
809 <listitem>
810 <para>Alters the priority of running processes</para>
811 <indexterm zone="ch-system-util-linux renice">
812 <primary sortas="b-renice">renice</primary>
813 </indexterm>
814 </listitem>
815 </varlistentry>
816
817 <varlistentry id="resizepart">
818 <term><command>resizepart</command></term>
819 <listitem>
820 <para>Asks the Linux kernel to resize a partition</para>
821 <indexterm zone="ch-system-util-linux resizepart">
822 <primary sortas="b-resizepart">resizepart</primary>
823 </indexterm>
824 </listitem>
825 </varlistentry>
826
827 <varlistentry id="rev">
828 <term><command>rev</command></term>
829 <listitem>
830 <para>Reverses the lines of a given file</para>
831 <indexterm zone="ch-system-util-linux rev">
832 <primary sortas="b-rev">rev</primary>
833 </indexterm>
834 </listitem>
835 </varlistentry>
836
837 <varlistentry id="rtcwake">
838 <term><command>rtcwake</command></term>
839 <listitem>
840 <para>Used to enter a system sleep state until specified wakeup
841 time</para>
842 <indexterm zone="ch-system-util-linux rtcwake">
843 <primary sortas="b-rtcwake">rtcwake</primary>
844 </indexterm>
845 </listitem>
846 </varlistentry>
847
848 <varlistentry id="script">
849 <term><command>script</command></term>
850 <listitem>
851 <para>Makes a typescript of a terminal session</para>
852 <indexterm zone="ch-system-util-linux script">
853 <primary sortas="b-script">script</primary>
854 </indexterm>
855 </listitem>
856 </varlistentry>
857
858 <varlistentry id="scriptreplay">
859 <term><command>scriptreplay</command></term>
860 <listitem>
861 <para>Plays back typescripts using timing information</para>
862 <indexterm zone="ch-system-util-linux scriptreplay">
863 <primary sortas="b-scriptreplay">scriptreplay</primary>
864 </indexterm>
865 </listitem>
866 </varlistentry>
867
868 <varlistentry id="setarch">
869 <term><command>setarch</command></term>
870 <listitem>
871 <para>Changes reported architecture in a new program environment and
872 sets personality flags</para>
873 <indexterm zone="ch-system-util-linux setarch">
874 <primary sortas="b-setarch">setarch</primary>
875 </indexterm>
876 </listitem>
877 </varlistentry>
878
879 <varlistentry id="setsid">
880 <term><command>setsid</command></term>
881 <listitem>
882 <para>Runs the given program in a new session</para>
883 <indexterm zone="ch-system-util-linux setsid">
884 <primary sortas="b-setsid">setsid</primary>
885 </indexterm>
886 </listitem>
887 </varlistentry>
888
889 <varlistentry id="setterm">
890 <term><command>setterm</command></term>
891 <listitem>
892 <para>Sets terminal attributes</para>
893 <indexterm zone="ch-system-util-linux setterm">
894 <primary sortas="b-setterm">setterm</primary>
895 </indexterm>
896 </listitem>
897 </varlistentry>
898
899 <varlistentry id="sfdisk">
900 <term><command>sfdisk</command></term>
901 <listitem>
902 <para>A disk partition table manipulator</para>
903 <indexterm zone="ch-system-util-linux sfdisk">
904 <primary sortas="b-sfdisk">sfdisk</primary>
905 </indexterm>
906 </listitem>
907 </varlistentry>
908
909 <varlistentry id="swaplabel">
910 <term><command>swaplabel</command></term>
911 <listitem>
912 <para>Allows to change swaparea UUID and label</para>
913 <indexterm zone="ch-system-util-linux swaplabel">
914 <primary sortas="b-swaplabel">swaplabel</primary>
915 </indexterm>
916 </listitem>
917 </varlistentry>
918
919 <varlistentry id="swapoff">
920 <term><command>swapoff</command></term>
921 <listitem>
922 <para>Disables devices and files for paging and swapping</para>
923 <indexterm zone="ch-system-util-linux swapoff">
924 <primary sortas="b-swapoff">swapoff</primary>
925 </indexterm>
926 </listitem>
927 </varlistentry>
928
929 <varlistentry id="swapon">
930 <term><command>swapon</command></term>
931 <listitem>
932 <para>Enables devices and files for paging and swapping and
933 lists the devices and files currently in use</para>
934 <indexterm zone="ch-system-util-linux swapon">
935 <primary sortas="b-swapon">swapon</primary>
936 </indexterm>
937 </listitem>
938 </varlistentry>
939
940 <varlistentry id="switch_root">
941 <term><command>switch_root</command></term>
942 <listitem>
943 <para>Switches to another filesystem as the root of the mount tree</para>
944 <indexterm zone="ch-system-util-linux switch_root">
945 <primary sortas="b-switch_root">switch_root</primary>
946 </indexterm>
947 </listitem>
948 </varlistentry>
949
950 <varlistentry id="tailf">
951 <term><command>tailf</command></term>
952 <listitem>
953 <para>Tracks the growth of a log file. Displays the last 10 lines
954 of a log file, then continues displaying any new entries in the
955 log file as they are created</para>
956 <indexterm zone="ch-system-util-linux tailf">
957 <primary sortas="b-tailf">tailf</primary>
958 </indexterm>
959 </listitem>
960 </varlistentry>
961
962 <varlistentry id="taskset">
963 <term><command>taskset</command></term>
964 <listitem>
965 <para>Retrieves or sets a process' CPU affinity</para>
966 <indexterm zone="ch-system-util-linux taskset">
967 <primary sortas="b-taskset">taskset</primary>
968 </indexterm>
969 </listitem>
970 </varlistentry>
971
972 <varlistentry id="ul">
973 <term><command>ul</command></term>
974 <listitem>
975 <para>A filter for translating underscores into escape sequences
976 indicating underlining for the terminal in use</para>
977 <indexterm zone="ch-system-util-linux ul">
978 <primary sortas="b-ul">ul</primary>
979 </indexterm>
980 </listitem>
981 </varlistentry>
982
983 <varlistentry id="umount">
984 <term><command>umount</command></term>
985 <listitem>
986 <para>Disconnects a file system from the system's file tree</para>
987 <indexterm zone="ch-system-util-linux umount">
988 <primary sortas="b-umount">umount</primary>
989 </indexterm>
990 </listitem>
991 </varlistentry>
992
993 <varlistentry id="unshare">
994 <term><command>unshare</command></term>
995 <listitem>
996 <para>Runs a program with some namespaces unshared from parent</para>
997 <indexterm zone="ch-system-util-linux unshare">
998 <primary sortas="b-unshare">unshare</primary>
999 </indexterm>
1000 </listitem>
1001 </varlistentry>
1002
1003 <varlistentry id="utmpdump">
1004 <term><command>utmpdump</command></term>
1005 <listitem>
1006 <para>Displays the content of the given login file in a more
1007 user-friendly format</para>
1008 <indexterm zone="ch-system-util-linux utmpdump">
1009 <primary sortas="b-utmpdump">utmpdump</primary>
1010 </indexterm>
1011 </listitem>
1012 </varlistentry>
1013
1014 <varlistentry id="uuidd">
1015 <term><command>uuidd</command></term>
1016 <listitem>
1017 <para>A daemon used by the UUID library to generate time-based
1018 UUIDs in a secure and guranteed-unique fashion.</para>
1019 <indexterm zone="ch-system-util-linux uuidd">
1020 <primary sortas="b-uuidd">uuidd</primary>
1021 </indexterm>
1022 </listitem>
1023 </varlistentry>
1024
1025 <varlistentry id="uuidgen">
1026 <term><command>uuidgen</command></term>
1027 <listitem>
1028 <para>Creates new UUIDs. Each new UUID can reasonably be considered
1029 unique among all UUIDs created, on the local system and on other
1030 systems, in the past and in the future</para>
1031 <indexterm zone="ch-system-util-linux uuidgen">
1032 <primary sortas="b-uuidgen">uuidgen</primary>
1033 </indexterm>
1034 </listitem>
1035 </varlistentry>
1036
1037 <varlistentry id="wall">
1038 <term><command>wall</command></term>
1039 <listitem>
1040 <para>Displays the contents of a file or, by default, its standard
1041 input, on the terminals of all currently logged in users</para>
1042 <indexterm zone="ch-system-util-linux wall">
1043 <primary sortas="b-wall">wall</primary>
1044 </indexterm>
1045 </listitem>
1046 </varlistentry>
1047
1048 <varlistentry id="wdctl">
1049 <term><command>wdctl</command></term>
1050 <listitem>
1051 <para>Shows hardware watchdog status</para>
1052 <indexterm zone="ch-system-util-linux wdctl">
1053 <primary sortas="b-wdctl">wdctl</primary>
1054 </indexterm>
1055 </listitem>
1056 </varlistentry>
1057
1058 <varlistentry id="whereis">
1059 <term><command>whereis</command></term>
1060 <listitem>
1061 <para>Reports the location of the binary, source, and man page
1062 for the given command</para>
1063 <indexterm zone="ch-system-util-linux whereis">
1064 <primary sortas="b-whereis">whereis</primary>
1065 </indexterm>
1066 </listitem>
1067 </varlistentry>
1068
1069 <varlistentry id="wipefs">
1070 <term><command>wipefs</command></term>
1071 <listitem>
1072 <para>Wipes a filesystem signature from a device</para>
1073 <indexterm zone="ch-system-util-linux wipefs">
1074 <primary sortas="b-wipefs">wipefs</primary>
1075 </indexterm>
1076 </listitem>
1077 </varlistentry>
1078
1079 <varlistentry id="x86_64">
1080 <term><command>x86_64</command></term>
1081 <listitem>
1082 <para>A symbolic link to setarch</para>
1083 <indexterm zone="ch-system-util-linux x86_64">
1084 <primary sortas="b-x86_64">x86_64</primary>
1085 </indexterm>
1086 </listitem>
1087 </varlistentry>
1088
1089 <varlistentry id="libblkid">
1090 <term><filename class="libraryfile">libblkid</filename></term>
1091 <listitem>
1092 <para>Contains routines for device identification and token
1093 extraction</para>
1094 <indexterm zone="ch-system-util-linux libblkid">
1095 <primary sortas="c-libblkid">libblkid</primary>
1096 </indexterm>
1097 </listitem>
1098 </varlistentry>
1099
1100 <varlistentry id="libmount">
1101 <term><filename class="libraryfile">libmount</filename></term>
1102 <listitem>
1103 <para>Contains routines for block device mounting and
1104 unmounting</para>
1105 <indexterm zone="ch-system-util-linux libmount">
1106 <primary sortas="c-libmount">libmount</primary>
1107 </indexterm>
1108 </listitem>
1109 </varlistentry>
1110
1111 <varlistentry id="libuuid">
1112 <term><filename class="libraryfile">libuuid</filename></term>
1113 <listitem>
1114 <para>Contains routines for generating unique identifiers for objects
1115 that may be accessible beyond the local system</para>
1116 <indexterm zone="ch-system-util-linux libuuid">
1117 <primary sortas="c-libuuid">libuuid</primary>
1118 </indexterm>
1119 </listitem>
1120 </varlistentry>
1121
1122 </variablelist>
1123
1124 </sect2>
1125
1126</sect1>
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