source: clfs-sysroot/BOOK/final-system/common/coreutils.xml @ b16b4dc

Last change on this file since b16b4dc was b16b4dc, checked in by Jim Gifford <clfs@…>, 16 years ago

r3863@server (orig r1740): jciccone | 2006-06-07 15:51:19 -0700
Added [ to coreutils list.

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File size: 33.9 KB
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1<?xml version="1.0" encoding="ISO-8859-1"?>
2<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN"
3  "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" [
4  <!ENTITY % general-entities SYSTEM "../../general.ent">
5  %general-entities;
6]>
7
8<sect1 id="ch-system-coreutils" role="wrap">
9  <?dbhtml filename="coreutils.html"?>
10
11  <title>Coreutils-&coreutils-version;</title>
12
13  <indexterm zone="ch-system-coreutils">
14    <primary sortas="a-Coreutils">Coreutils</primary>
15  </indexterm>
16
17  <sect2 role="package">
18    <title/>
19
20    <para>The Coreutils package contains utilities for showing and setting the
21    basic system characteristics.</para>
22
23  </sect2>
24
25  <sect2 role="installation">
26    <title>Installation of Coreutils</title>
27
28    <para os="a">Prevent Coreutils from installing binaries that will be
29    installed by other packages:</para>
30
31<screen os="b"><userinput>patch -Np1 -i ../&coreutils-suppress-patch;</userinput></screen>
32
33    <para os="c">Now prepare Coreutils for compilation:</para>
34
35<screen os="d"><userinput>./configure --prefix=/usr \
36   --build=${LFS_HOST} --host=${LFS_TARGET}</userinput></screen>
37
38    <para os="e">Compile the package:</para>
39
40<screen os="f"><userinput>make</userinput></screen>
41
42    <para os="g">Install the package:</para>
43
44<screen os="h"><userinput>make DESTDIR=${LFS} install</userinput></screen>
45
46    <para os="i">Move programs to the locations specified by the FHS:</para>
47
48<screen os="j"><userinput>mv -v ${LFS}/usr/bin/{[,basename,cat,chgrp,chmod,chown,cp} ${LFS}/bin
49mv -v ${LFS}/usr/bin/{date,dd,df,echo,false,hostname,install,ln} ${LFS}/bin
50mv -v ${LFS}/usr/bin/{ls,mkdir,mknod,mv,nice,pwd,readlink,rm,rmdir,sync} ${LFS}/bin
51mv -v ${LFS}/usr/bin/{stty,test,touch,true,uname} ${LFS}/bin
52mv -v ${LFS}/usr/bin/chroot ${LFS}/usr/sbin
53ln -svf ../../bin/install ${LFS}/usr/bin</userinput></screen>
54
55    <para os="k">Some of the scripts in the LFS-Bootscripts package depend on
56    <command>head</command> and <command>sleep</command>. As <filename
57    class="directory">/usr</filename> may not be available during the early
58    stages of booting, those binaries need to be on the root partition:</para>
59
60<screen os="l"><userinput>mv -v ${LFS}/usr/bin/{head,sleep} ${LFS}/bin</userinput></screen>
61
62  </sect2>
63
64  <sect2 id="contents-coreutils" role="content">
65    <title>Contents of Coreutils</title>
66
67    <segmentedlist>
68      <segtitle>Installed programs</segtitle>
69
70      <seglistitem>
71        <seg>[, basename, cat, chgrp, chmod, chown, chroot, cksum,
72        comm, cp, csplit, cut, date, dd, df, dir, dircolors, dirname, du,
73        echo, env, expand, expr, factor, false, fmt, fold, groups, head,
74        hostid, hostname, id, install, join, link, ln, logname, ls, md5sum,
75        mkdir, mkfifo, mknod, mv, nice, nl, nohup, od, paste, pathchk, pinky,
76        pr, printenv, printf, ptx, pwd, readlink, rm, rmdir, seq, sha1sum,
77        shred, sleep, sort, split, stat, stty, sum, sync, tac, tail, tee,
78        test, touch, tr, true, tsort, tty, uname, unexpand, uniq, unlink,
79        users, vdir, wc, who, whoami, and yes</seg>
80      </seglistitem>
81    </segmentedlist>
82
83    <variablelist>
84      <bridgehead renderas="sect3">Short Descriptions</bridgehead>
85      <?dbfo list-presentation="list"?>
86      <?dbhtml list-presentation="table"?>
87
88      <varlistentry id="basename">
89        <term><command>basename</command></term>
90        <listitem>
91          <para>Strips any path and a given suffix from a file name</para>
92          <indexterm zone="ch-system-coreutils basename">
93            <primary sortas="b-basename">basename</primary>
94          </indexterm>
95        </listitem>
96      </varlistentry>
97
98      <varlistentry id="cat">
99        <term><command>cat</command></term>
100        <listitem>
101          <para>Concatenates files to standard output</para>
102          <indexterm zone="ch-system-coreutils cat">
103            <primary sortas="b-cat">cat</primary>
104          </indexterm>
105        </listitem>
106      </varlistentry>
107
108      <varlistentry id="chgrp">
109        <term><command>chgrp</command></term>
110        <listitem>
111          <para>Changes the group ownership of files and directories</para>
112          <indexterm zone="ch-system-coreutils chgrp">
113            <primary sortas="b-chgrp">chgrp</primary>
114          </indexterm>
115        </listitem>
116      </varlistentry>
117
118      <varlistentry id="chmod">
119        <term><command>chmod</command></term>
120        <listitem>
121          <para>Changes the permissions of each file to the given mode; the mode
122          can be either a symbolic representation of the changes to make or an
123          octal number representing the new permissions</para>
124          <indexterm zone="ch-system-coreutils chmod">
125            <primary sortas="b-chmod">chmod</primary>
126          </indexterm>
127        </listitem>
128      </varlistentry>
129
130      <varlistentry id="chown">
131        <term><command>chown</command></term>
132        <listitem>
133          <para>Changes the user and/or group ownership of files and
134          directories</para>
135          <indexterm zone="ch-system-coreutils chown">
136            <primary sortas="b-chown">chown</primary>
137          </indexterm>
138        </listitem>
139      </varlistentry>
140
141      <varlistentry id="chroot">
142        <term><command>chroot</command></term>
143        <listitem>
144          <para>Runs a command with the specified directory as the
145          <filename class="directory">/</filename> directory</para>
146          <indexterm zone="ch-system-coreutils chroot">
147            <primary sortas="b-chroot">chroot</primary>
148          </indexterm>
149        </listitem>
150      </varlistentry>
151
152      <varlistentry id="cksum">
153        <term><command>cksum</command></term>
154        <listitem>
155          <para>Prints the Cyclic Redundancy Check (CRC) checksum and the byte
156          counts of each specified file</para>
157          <indexterm zone="ch-system-coreutils cksum">
158            <primary sortas="b-cksum">cksum</primary>
159          </indexterm>
160        </listitem>
161      </varlistentry>
162
163      <varlistentry id="comm">
164        <term><command>comm</command></term>
165        <listitem>
166          <para>Compares two sorted files, outputting in three columns the lines
167          that are unique and the lines that are common</para>
168          <indexterm zone="ch-system-coreutils comm">
169            <primary sortas="b-comm">comm</primary>
170          </indexterm>
171        </listitem>
172      </varlistentry>
173
174      <varlistentry id="cp">
175        <term><command>cp</command></term>
176        <listitem>
177          <para>Copies files</para>
178          <indexterm zone="ch-system-coreutils cp">
179            <primary sortas="b-cp">cp</primary>
180          </indexterm>
181        </listitem>
182      </varlistentry>
183
184      <varlistentry id="csplit">
185        <term><command>csplit</command></term>
186        <listitem>
187          <para>Splits a given file into several new files, separating them
188          according to given patterns or line numbers and outputting the byte
189          count of each new file</para>
190          <indexterm zone="ch-system-coreutils csplit">
191            <primary sortas="b-csplit">csplit</primary>
192          </indexterm>
193        </listitem>
194      </varlistentry>
195
196      <varlistentry id="cut">
197        <term><command>cut</command></term>
198        <listitem>
199          <para>Prints sections of lines, selecting the parts according to given
200          fields or positions</para>
201          <indexterm zone="ch-system-coreutils cut">
202            <primary sortas="b-cut">cut</primary>
203          </indexterm>
204        </listitem>
205      </varlistentry>
206
207      <varlistentry id="date">
208        <term><command>date</command></term>
209        <listitem>
210          <para>Displays the current time in the given format, or sets the
211          system date</para>
212          <indexterm zone="ch-system-coreutils date">
213            <primary sortas="b-date">date</primary>
214          </indexterm>
215        </listitem>
216      </varlistentry>
217
218      <varlistentry id="dd">
219        <term><command>dd</command> </term>
220        <listitem>
221          <para>Copies a file using the given block size and count, while
222          optionally performing conversions on it</para>
223          <indexterm zone="ch-system-coreutils dd">
224            <primary sortas="b-dd">dd</primary>
225          </indexterm>
226        </listitem>
227      </varlistentry>
228
229      <varlistentry id="df">
230        <term><command>df</command></term>
231        <listitem>
232          <para>Reports the amount of disk space available (and used) on all
233          mounted file systems, or only on the file systems holding the selected
234          files</para>
235          <indexterm zone="ch-system-coreutils df">
236            <primary sortas="b-df">df</primary>
237          </indexterm>
238        </listitem>
239      </varlistentry>
240
241      <varlistentry id="dir">
242        <term><command>dir</command></term>
243        <listitem>
244          <para>Lists the contents of each given directory (the same as
245          the <command>ls</command> command)</para>
246          <indexterm zone="ch-system-coreutils dir">
247            <primary sortas="b-dir">dir</primary>
248          </indexterm>
249        </listitem>
250      </varlistentry>
251
252      <varlistentry id="dircolors">
253        <term><command>dircolors</command></term>
254        <listitem>
255          <para>Outputs commands to set the <envar>LS_COLOR</envar>
256          environment variable to change the color scheme used by
257          <command>ls</command></para>
258          <indexterm zone="ch-system-coreutils dircolors">
259            <primary sortas="b-dircolors">dircolors</primary>
260          </indexterm>
261        </listitem>
262      </varlistentry>
263
264      <varlistentry id="dirname">
265        <term><command>dirname</command></term>
266        <listitem>
267          <para>Strips the non-directory suffix from a file name</para>
268          <indexterm zone="ch-system-coreutils dirname">
269            <primary sortas="b-dirname">dirname</primary>
270          </indexterm>
271        </listitem>
272      </varlistentry>
273
274      <varlistentry id="du">
275        <term><command>du</command></term>
276        <listitem>
277          <para>Reports the amount of disk space used by the current directory,
278          by each of the given directories (including all subdirectories) or by
279          each of the given files</para>
280          <indexterm zone="ch-system-coreutils du">
281            <primary sortas="b-du">du</primary>
282          </indexterm>
283        </listitem>
284      </varlistentry>
285
286      <varlistentry id="echo">
287        <term><command>echo</command></term>
288        <listitem>
289          <para>Displays the given strings</para>
290          <indexterm zone="ch-system-coreutils echo">
291            <primary sortas="b-echo">echo</primary>
292          </indexterm>
293        </listitem>
294      </varlistentry>
295
296      <varlistentry id="env">
297        <term><command>env</command></term>
298        <listitem>
299          <para>Runs a command in a modified environment</para>
300          <indexterm zone="ch-system-coreutils env">
301            <primary sortas="b-env">env</primary>
302          </indexterm>
303        </listitem>
304      </varlistentry>
305
306      <varlistentry id="expand">
307        <term><command>expand</command></term>
308        <listitem>
309          <para>Converts tabs to spaces</para>
310          <indexterm zone="ch-system-coreutils expand">
311            <primary sortas="b-expand">expand</primary>
312          </indexterm>
313        </listitem>
314      </varlistentry>
315
316      <varlistentry id="expr">
317        <term><command>expr</command></term>
318        <listitem>
319          <para>Evaluates expressions</para>
320          <indexterm zone="ch-system-coreutils expr">
321            <primary sortas="b-expr">expr</primary>
322          </indexterm>
323        </listitem>
324      </varlistentry>
325
326      <varlistentry id="factor">
327        <term><command>factor</command></term>
328        <listitem>
329          <para>Prints the prime factors of all specified integer numbers</para>
330          <indexterm zone="ch-system-coreutils factor">
331            <primary sortas="b-factor">factor</primary>
332          </indexterm>
333        </listitem>
334      </varlistentry>
335
336      <varlistentry id="false">
337        <term><command>false</command></term>
338        <listitem>
339          <para>Does nothing, unsuccessfully; it always exits with a status code
340          indicating failure</para>
341          <indexterm zone="ch-system-coreutils false">
342            <primary sortas="b-false">false</primary>
343          </indexterm>
344        </listitem>
345      </varlistentry>
346
347      <varlistentry id="fmt">
348        <term><command>fmt</command></term>
349        <listitem>
350          <para>Reformats the paragraphs in the given files</para>
351          <indexterm zone="ch-system-coreutils fmt">
352            <primary sortas="b-fmt">fmt</primary>
353          </indexterm>
354        </listitem>
355      </varlistentry>
356
357      <varlistentry id="fold">
358        <term><command>fold</command></term>
359        <listitem>
360          <para>Wraps the lines in the given files</para>
361          <indexterm zone="ch-system-coreutils fold">
362            <primary sortas="b-fold">fold</primary>
363          </indexterm>
364        </listitem>
365      </varlistentry>
366
367      <varlistentry id="groups">
368        <term><command>groups</command></term>
369        <listitem>
370          <para>Reports a user's group memberships</para>
371          <indexterm zone="ch-system-coreutils groups">
372            <primary sortas="b-groups">groups</primary>
373          </indexterm>
374        </listitem>
375      </varlistentry>
376
377      <varlistentry id="head">
378        <term><command>head</command></term>
379        <listitem>
380          <para>Prints the first ten lines (or the given number of lines)
381          of each given file</para>
382          <indexterm zone="ch-system-coreutils head">
383            <primary sortas="b-head">head</primary>
384          </indexterm>
385        </listitem>
386      </varlistentry>
387
388      <varlistentry id="hostid">
389        <term><command>hostid</command></term>
390        <listitem>
391          <para>Reports the numeric identifier (in hexadecimal) of the host</para>
392          <indexterm zone="ch-system-coreutils hostid">
393            <primary sortas="b-hostid">hostid</primary>
394          </indexterm>
395        </listitem>
396      </varlistentry>
397
398      <varlistentry id="hostname">
399        <term><command>hostname</command></term>
400        <listitem>
401          <para>Reports or sets the name of the host</para>
402          <indexterm zone="ch-system-coreutils hostname">
403            <primary sortas="b-hostname">hostname</primary>
404          </indexterm>
405        </listitem>
406      </varlistentry>
407
408      <varlistentry id="id">
409        <term><command>id</command></term>
410        <listitem>
411          <para>Reports the effective user ID, group ID, and group memberships
412          of the current user or specified user</para>
413          <indexterm zone="ch-system-coreutils id">
414            <primary sortas="b-id">id</primary>
415          </indexterm>
416        </listitem>
417      </varlistentry>
418
419      <varlistentry id="install">
420        <term><command>install</command> </term>
421        <listitem>
422          <para>Copies files while setting their permission modes and, if
423          possible, their owner and group</para>
424          <indexterm zone="ch-system-coreutils install">
425            <primary sortas="b-install">install</primary>
426          </indexterm>
427        </listitem>
428      </varlistentry>
429
430      <varlistentry id="join">
431        <term><command>join</command></term>
432        <listitem>
433          <para>Joins the lines that have identical join fields from two
434          separate files</para>
435          <indexterm zone="ch-system-coreutils join">
436            <primary sortas="b-join">join</primary>
437          </indexterm>
438        </listitem>
439      </varlistentry>
440
441      <varlistentry id="link">
442        <term><command>link</command></term>
443        <listitem>
444          <para>Creates a hard link with the given name to a file</para>
445          <indexterm zone="ch-system-coreutils link">
446            <primary sortas="b-link">link</primary>
447          </indexterm>
448        </listitem>
449      </varlistentry>
450
451      <varlistentry id="ln">
452        <term><command>ln</command></term>
453        <listitem>
454          <para>Makes hard links or soft (symbolic) links between files</para>
455          <indexterm zone="ch-system-coreutils ln">
456            <primary sortas="b-ln">ln</primary>
457          </indexterm>
458        </listitem>
459      </varlistentry>
460
461      <varlistentry id="logname">
462        <term><command>logname</command></term>
463        <listitem>
464          <para>Reports the current user's login name</para>
465          <indexterm zone="ch-system-coreutils logname">
466            <primary sortas="b-logname">logname</primary>
467          </indexterm>
468        </listitem>
469      </varlistentry>
470
471      <varlistentry id="ls">
472        <term><command>ls</command></term>
473        <listitem>
474          <para>Lists the contents of each given directory</para>
475          <indexterm zone="ch-system-coreutils ls">
476            <primary sortas="b-ls">ls</primary>
477          </indexterm>
478        </listitem>
479      </varlistentry>
480
481      <varlistentry id="md5sum">
482        <term><command>md5sum</command></term>
483        <listitem>
484          <para>Reports or checks Message Digest 5 (MD5) checksums</para>
485          <indexterm zone="ch-system-coreutils md5sum">
486            <primary sortas="b-md5sum">md5sum</primary>
487          </indexterm>
488        </listitem>
489      </varlistentry>
490
491      <varlistentry id="mkdir">
492        <term><command>mkdir</command></term>
493        <listitem>
494          <para>Creates directories with the given names</para>
495          <indexterm zone="ch-system-coreutils mkdir">
496            <primary sortas="b-mkdir">mkdir</primary>
497          </indexterm>
498        </listitem>
499      </varlistentry>
500
501      <varlistentry id="mkfifo">
502        <term><command>mkfifo</command></term>
503        <listitem>
504          <para>Creates First-In, First-Outs (FIFOs), a <quote>named
505          pipe</quote> in UNIX parlance, with the given names</para>
506          <indexterm zone="ch-system-coreutils mkfifo">
507            <primary sortas="b-mkfifo">mkfifo</primary>
508          </indexterm>
509        </listitem>
510      </varlistentry>
511
512      <varlistentry id="mknod">
513        <term><command>mknod</command></term>
514        <listitem>
515          <para>Creates device nodes with the given names; a device node is a
516          character special file, a block special file, or a FIFO</para>
517          <indexterm zone="ch-system-coreutils mknod">
518            <primary sortas="b-mknod">mknod</primary>
519          </indexterm>
520        </listitem>
521      </varlistentry>
522
523      <varlistentry id="mv">
524        <term><command>mv</command></term>
525        <listitem>
526          <para>Moves or renames files or directories</para>
527          <indexterm zone="ch-system-coreutils mv">
528            <primary sortas="b-mv">mv</primary>
529          </indexterm>
530        </listitem>
531      </varlistentry>
532
533      <varlistentry id="nice">
534        <term><command>nice</command></term>
535        <listitem>
536          <para>Runs a program with modified scheduling priority</para>
537          <indexterm zone="ch-system-coreutils nice">
538            <primary sortas="b-nice">nice</primary>
539          </indexterm>
540        </listitem>
541      </varlistentry>
542
543      <varlistentry id="nl">
544        <term><command>nl</command></term>
545        <listitem>
546          <para>Numbers the lines from the given files</para>
547          <indexterm zone="ch-system-coreutils nl">
548            <primary sortas="b-nl">nl</primary>
549          </indexterm>
550        </listitem>
551      </varlistentry>
552
553      <varlistentry id="nohup">
554        <term><command>nohup</command></term>
555        <listitem>
556          <para>Runs a command immune to hangups, with its output redirected to
557          a log file</para>
558          <indexterm zone="ch-system-coreutils nohup">
559            <primary sortas="b-nohup">nohup</primary>
560          </indexterm>
561        </listitem>
562      </varlistentry>
563
564      <varlistentry id="od">
565        <term><command>od</command></term>
566        <listitem>
567          <para>Dumps files in octal and other formats</para>
568          <indexterm zone="ch-system-coreutils od">
569            <primary sortas="b-od">od</primary>
570          </indexterm>
571        </listitem>
572      </varlistentry>
573
574      <varlistentry id="paste">
575        <term><command>paste</command></term>
576        <listitem>
577          <para>Merges the given files, joining sequentially corresponding lines
578          side by side, separated by tab characters</para>
579          <indexterm zone="ch-system-coreutils paste">
580            <primary sortas="b-paste">paste</primary>
581          </indexterm>
582        </listitem>
583      </varlistentry>
584
585      <varlistentry id="pathchk">
586        <term><command>pathchk</command></term>
587        <listitem>
588          <para>Checks if file names are valid or portable</para>
589          <indexterm zone="ch-system-coreutils pathchk">
590            <primary sortas="b-pathchk">pathchk</primary>
591          </indexterm>
592        </listitem>
593      </varlistentry>
594
595      <varlistentry id="pinky">
596        <term><command>pinky</command></term>
597        <listitem>
598          <para>Is a lightweight finger client; it reports some information
599          about the given users</para>
600          <indexterm zone="ch-system-coreutils pinky">
601            <primary sortas="b-pinky">pinky</primary>
602          </indexterm>
603        </listitem>
604      </varlistentry>
605
606      <varlistentry id="pr">
607        <term><command>pr</command></term>
608        <listitem>
609          <para>Paginates and columnates files for printing</para>
610          <indexterm zone="ch-system-coreutils pr">
611            <primary sortas="b-pr">pr</primary>
612          </indexterm>
613        </listitem>
614      </varlistentry>
615
616      <varlistentry id="printenv">
617        <term><command>printenv</command></term>
618        <listitem>
619          <para>Prints the environment</para>
620          <indexterm zone="ch-system-coreutils printenv">
621            <primary sortas="b-printenv">printenv</primary>
622          </indexterm>
623        </listitem>
624      </varlistentry>
625
626      <varlistentry id="printf">
627        <term><command>printf</command></term>
628        <listitem>
629          <para>Prints the given arguments according to the given format, much
630          like the C printf function</para>
631          <indexterm zone="ch-system-coreutils printf">
632            <primary sortas="b-printf">printf</primary>
633          </indexterm>
634        </listitem>
635      </varlistentry>
636
637      <varlistentry id="ptx">
638        <term><command>ptx</command></term>
639        <listitem>
640          <para>Produces a permuted index from the contents of the given files,
641          with each keyword in its context</para>
642          <indexterm zone="ch-system-coreutils ptx">
643            <primary sortas="b-ptx">ptx</primary>
644          </indexterm>
645        </listitem>
646      </varlistentry>
647
648      <varlistentry id="pwd">
649        <term><command>pwd</command></term>
650        <listitem>
651          <para>Reports the name of the current working directory</para>
652          <indexterm zone="ch-system-coreutils pwd">
653            <primary sortas="b-pwd">pwd</primary>
654          </indexterm>
655        </listitem>
656      </varlistentry>
657
658      <varlistentry id="readlink">
659        <term><command>readlink</command></term>
660        <listitem>
661          <para>Reports the value of the given symbolic link</para>
662          <indexterm zone="ch-system-coreutils readlink">
663            <primary sortas="b-readlink">readlink</primary>
664          </indexterm>
665        </listitem>
666      </varlistentry>
667
668      <varlistentry id="rm">
669        <term><command>rm</command></term>
670        <listitem>
671          <para>Removes files or directories</para>
672          <indexterm zone="ch-system-coreutils rm">
673            <primary sortas="b-rm">rm</primary>
674          </indexterm>
675        </listitem>
676      </varlistentry>
677
678      <varlistentry id="rmdir">
679        <term><command>rmdir</command></term>
680        <listitem>
681          <para>Removes directories if they are empty</para>
682          <indexterm zone="ch-system-coreutils rmdir">
683            <primary sortas="b-rmdir">rmdir</primary>
684          </indexterm>
685        </listitem>
686      </varlistentry>
687
688      <varlistentry id="seq">
689        <term><command>seq</command></term>
690        <listitem>
691          <para>Prints a sequence of numbers within a given range and with a
692          given increment</para>
693          <indexterm zone="ch-system-coreutils seq">
694            <primary sortas="b-seq">seq</primary>
695          </indexterm>
696        </listitem>
697      </varlistentry>
698
699      <varlistentry id="sha1sum">
700        <term><command>sha1sum</command></term>
701        <listitem>
702          <para>Prints or checks 160-bit Secure Hash Algorithm 1 (SHA1)
703          checksums</para>
704          <indexterm zone="ch-system-coreutils sha1sum">
705            <primary sortas="b-sha1sum">sha1sum</primary>
706          </indexterm>
707        </listitem>
708      </varlistentry>
709
710      <varlistentry id="shred">
711        <term><command>shred</command></term>
712        <listitem>
713          <para>Overwrites the given files repeatedly with complex patterns,
714          making it difficult to recover the data</para>
715          <indexterm zone="ch-system-coreutils shred">
716            <primary sortas="b-shred">shred</primary>
717          </indexterm>
718        </listitem>
719      </varlistentry>
720
721      <varlistentry id="sleep">
722        <term><command>sleep</command></term>
723        <listitem>
724          <para>Pauses for the given amount of time</para>
725          <indexterm zone="ch-system-coreutils sleep">
726            <primary sortas="b-sleep">sleep</primary>
727          </indexterm>
728        </listitem>
729      </varlistentry>
730
731      <varlistentry id="sort">
732        <term><command>sort</command></term>
733        <listitem>
734          <para>Sorts the lines from the given files</para>
735          <indexterm zone="ch-system-coreutils sort">
736            <primary sortas="b-sort">sort</primary>
737          </indexterm>
738        </listitem>
739      </varlistentry>
740
741      <varlistentry id="split">
742        <term><command>split</command></term>
743        <listitem>
744          <para>Splits the given file into pieces, by size or by number of
745          lines</para>
746          <indexterm zone="ch-system-coreutils split">
747            <primary sortas="b-split">split</primary>
748          </indexterm>
749        </listitem>
750      </varlistentry>
751
752      <varlistentry id="stat">
753        <term><command>stat</command></term>
754        <listitem>
755          <para>Displays file or filesystem status</para>
756          <indexterm zone="ch-system-coreutils stat">
757            <primary sortas="b-stat">stat</primary>
758          </indexterm>
759        </listitem>
760      </varlistentry>
761
762      <varlistentry id="stty">
763        <term><command>stty</command></term>
764        <listitem>
765          <para>Sets or reports terminal line settings</para>
766          <indexterm zone="ch-system-coreutils stty">
767            <primary sortas="b-stty">stty</primary>
768          </indexterm>
769        </listitem>
770      </varlistentry>
771
772      <varlistentry id="sum">
773        <term><command>sum</command></term>
774        <listitem>
775          <para>Prints checksum and block counts for each given file</para>
776          <indexterm zone="ch-system-coreutils sum">
777            <primary sortas="b-sum">sum</primary>
778          </indexterm>
779        </listitem>
780      </varlistentry>
781
782      <varlistentry id="sync">
783        <term><command>sync</command></term>
784        <listitem>
785          <para>Flushes file system buffers; it forces changed blocks to disk
786          and updates the super block</para>
787          <indexterm zone="ch-system-coreutils sync">
788            <primary sortas="b-sync">sync</primary>
789          </indexterm>
790        </listitem>
791      </varlistentry>
792
793      <varlistentry id="tac">
794        <term><command>tac</command></term>
795        <listitem>
796          <para>Concatenates the given files in reverse</para>
797          <indexterm zone="ch-system-coreutils tac">
798            <primary sortas="b-tac">tac</primary>
799          </indexterm>
800        </listitem>
801      </varlistentry>
802
803      <varlistentry id="tail">
804        <term><command>tail</command></term>
805        <listitem>
806          <para>Prints the last ten lines (or the given number of lines) of each
807          given file</para>
808          <indexterm zone="ch-system-coreutils tail">
809            <primary sortas="b-tail">tail</primary>
810          </indexterm>
811        </listitem>
812      </varlistentry>
813
814      <varlistentry id="tee">
815        <term><command>tee</command></term>
816        <listitem>
817          <para>Reads from standard input while writing both to standard output
818          and to the given files</para>
819          <indexterm zone="ch-system-coreutils tee">
820            <primary sortas="b-tee">tee</primary>
821          </indexterm>
822        </listitem>
823      </varlistentry>
824
825      <varlistentry id="test">
826        <term><command>test</command> or <command>[</command></term>
827        <listitem>
828          <para>Compares values and checks file types</para>
829          <indexterm zone="ch-system-coreutils test">
830            <primary sortas="b-test">test</primary>
831          </indexterm>
832        </listitem>
833      </varlistentry>
834
835      <varlistentry id="touch">
836        <term><command>touch</command></term>
837        <listitem>
838          <para>Changes file timestamps, setting the access and modification
839          times of the given files to the current time; files that do not exist
840          are created with zero length</para>
841          <indexterm zone="ch-system-coreutils touch">
842            <primary sortas="b-touch">touch</primary>
843          </indexterm>
844        </listitem>
845      </varlistentry>
846
847      <varlistentry id="tr">
848        <term><command>tr</command></term>
849        <listitem>
850          <para>Translates, squeezes, and deletes the given characters from
851          standard input</para>
852          <indexterm zone="ch-system-coreutils tr">
853            <primary sortas="b-tr">tr</primary>
854          </indexterm>
855        </listitem>
856      </varlistentry>
857
858      <varlistentry id="true">
859        <term><command>true</command></term>
860        <listitem>
861          <para>Does nothing, successfully; it always exits with a status code
862          indicating success</para>
863          <indexterm zone="ch-system-coreutils true">
864            <primary sortas="b-true">true</primary>
865          </indexterm>
866        </listitem>
867      </varlistentry>
868
869      <varlistentry id="tsort">
870        <term><command>tsort</command></term>
871        <listitem>
872          <para>Performs a topological sort; it writes a completely ordered list
873          according to the partial ordering in a given file</para>
874          <indexterm zone="ch-system-coreutils tsort">
875            <primary sortas="b-tsort">tsort</primary>
876          </indexterm>
877        </listitem>
878      </varlistentry>
879
880      <varlistentry id="tty">
881        <term><command>tty</command></term>
882        <listitem>
883          <para>Reports the file name of the terminal connected to standard
884          input</para>
885          <indexterm zone="ch-system-coreutils tty">
886            <primary sortas="b-tty">tty</primary>
887          </indexterm>
888        </listitem>
889      </varlistentry>
890
891      <varlistentry id="uname">
892        <term><command>uname</command></term>
893        <listitem>
894          <para>Reports system information</para>
895          <indexterm zone="ch-system-coreutils uname">
896            <primary sortas="b-uname">uname</primary>
897          </indexterm>
898        </listitem>
899      </varlistentry>
900
901      <varlistentry id="unexpand">
902        <term><command>unexpand</command></term>
903        <listitem>
904          <para>Converts spaces to tabs</para>
905          <indexterm zone="ch-system-coreutils unexpand">
906            <primary sortas="b-unexpand">unexpand</primary>
907          </indexterm>
908        </listitem>
909      </varlistentry>
910
911      <varlistentry id="uniq">
912        <term><command>uniq</command></term>
913        <listitem>
914          <para>Discards all but one of successive identical lines</para>
915          <indexterm zone="ch-system-coreutils uniq">
916            <primary sortas="b-uniq">uniq</primary>
917          </indexterm>
918        </listitem>
919      </varlistentry>
920
921      <varlistentry id="unlink">
922        <term><command>unlink</command></term>
923        <listitem>
924          <para>Removes the given file</para>
925          <indexterm zone="ch-system-coreutils unlink">
926            <primary sortas="b-unlink">unlink</primary>
927          </indexterm>
928        </listitem>
929      </varlistentry>
930
931      <varlistentry id="users">
932        <term><command>users</command></term>
933        <listitem>
934          <para>Reports the names of the users currently logged on</para>
935          <indexterm zone="ch-system-coreutils users">
936            <primary sortas="b-users">users</primary>
937          </indexterm>
938        </listitem>
939      </varlistentry>
940
941      <varlistentry id="vdir">
942        <term><command>vdir</command></term>
943        <listitem>
944          <para>Is the same as <command>ls -l</command></para>
945          <indexterm zone="ch-system-coreutils vdir">
946            <primary sortas="b-vdir">vdir</primary>
947          </indexterm>
948        </listitem>
949      </varlistentry>
950
951      <varlistentry id="wc">
952        <term><command>wc</command></term>
953        <listitem>
954          <para>Reports the number of lines, words, and bytes for each given
955          file, as well as a total line when more than one file is given</para>
956          <indexterm zone="ch-system-coreutils wc">
957            <primary sortas="b-wc">wc</primary>
958          </indexterm>
959        </listitem>
960      </varlistentry>
961
962      <varlistentry id="who">
963        <term><command>who</command></term>
964        <listitem>
965          <para>Reports who is logged on</para>
966          <indexterm zone="ch-system-coreutils who">
967            <primary sortas="b-who">who</primary>
968          </indexterm>
969        </listitem>
970      </varlistentry>
971
972      <varlistentry id="whoami">
973        <term><command>whoami</command></term>
974        <listitem>
975          <para>Reports the user name associated with the current effective
976          user ID</para>
977          <indexterm zone="ch-system-coreutils whoami">
978            <primary sortas="b-whoami">whoami</primary>
979          </indexterm>
980        </listitem>
981      </varlistentry>
982
983      <varlistentry id="yes">
984        <term><command>yes</command></term>
985        <listitem>
986          <para>Repeatedly outputs <quote>y</quote> or a given string until
987          killed</para>
988          <indexterm zone="ch-system-coreutils yes">
989            <primary sortas="b-yes">yes</primary>
990          </indexterm>
991        </listitem>
992      </varlistentry>
993
994    </variablelist>
995
996  </sect2>
997
998</sect1>
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