source: clfs-sysroot/BOOK/final-system/common/coreutils.xml@ dd7cd8a

Last change on this file since dd7cd8a was d2c51b1, checked in by Joe Ciccone <jciccone@…>, 18 years ago

Updated to Coreutils 6.9.
Updated to M4 1.4.9.
Updated to Gzip 1.3.12.
Updated to Psmisc 22.5.
Updated to Man Pages 2.46.
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File size: 37.1 KB
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[02095ae]1<?xml version="1.0" encoding="ISO-8859-1"?>
[c439b8a]2<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
3 "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
[02095ae]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
[9748f02]28 <para os="p1">Prevent Coreutils from installing binaries that will be
[02095ae]29 installed by other packages:</para>
30
[9748f02]31<screen os="p2"><userinput>patch -Np1 -i ../&coreutils-suppress-patch;</userinput></screen>
32
[485c2de]33 <para os="p3">A known issue with the <command>uname</command> program from
34 this package is that the <option>-p</option> switch always
35 returns <computeroutput>unknown</computeroutput>. The following patch
36 fixes this behavior for all architectures:</para>
37
38<screen os="p4"><userinput>patch -Np1 -i ../&coreutils-uname-patch;</userinput></screen>
39
[3f41ad5]40 <para os="aa">When the uname patch was applied. A change was made to
41 <filename>uname.c</filename>. This change is causing the man Makefile to
[0c2cb0b]42 try and regenerate the man page for uname. Since the compiled uname can
[3f41ad5]43 not be executed the build will fail. The following command gives the uname
44 man page a newer timestamp then <filename>uname.c</filename>.</para>
45
46<screen os="ab"><userinput>touch man/uname.1</userinput></screen>
47
[3cf26f7]48 <para os="a">Configure can not properly determine how to get free space
49 when cross-compiling, Without putting the following entry into
50 <filename>config.cache</filename> the <command>df</command> program will
51 not be built.</para>
[9748f02]52
[3cf26f7]53<screen os="b"><userinput>echo "fu_cv_sys_stat_statfs2_bsize=yes" &gt; config.cache</userinput></screen>
[02095ae]54
55 <para os="c">Now prepare Coreutils for compilation:</para>
56
[cee2ca2]57<screen os="d"><userinput>./configure --build=${CLFS_HOST} --host=${CLFS_TARGET} \
58 --prefix=/usr --cache-file=config.cache </userinput></screen>
[02095ae]59
60 <para os="e">Compile the package:</para>
61
62<screen os="f"><userinput>make</userinput></screen>
63
64 <para os="g">Install the package:</para>
65
[586feb7]66<screen os="h"><userinput>make DESTDIR=${CLFS} install</userinput></screen>
[02095ae]67
68 <para os="i">Move programs to the locations specified by the FHS:</para>
69
[586feb7]70<screen os="j"><userinput>mv -v ${CLFS}/usr/bin/{cat,chgrp,chmod,chown,cp,date} ${CLFS}/bin
71mv -v ${CLFS}/usr/bin/{dd,df,echo,false,hostname,ln,ls,mkdir,mknod} ${CLFS}/bin
72mv -v ${CLFS}/usr/bin/{mv,pwd,rm,rmdir,stty,true,uname} ${CLFS}/bin
73mv -v ${CLFS}/usr/bin/chroot ${CLFS}/usr/sbin</userinput></screen>
[02095ae]74
[586feb7]75 <para os="k">Other Coreutils programs are used by some of the scripts
[e4f6ff4]76 in the CLFS-Bootscripts package. As <filename
[02095ae]77 class="directory">/usr</filename> may not be available during the early
78 stages of booting, those binaries need to be on the root partition:</para>
79
[586feb7]80<screen os="l"><userinput>mv -v ${CLFS}/usr/bin/{[,basename,head,install,nice} ${CLFS}/bin
81mv -v ${CLFS}/usr/bin/{readlink,sleep,sync,test,touch} ${CLFS}/bin
82ln -svf ../../bin/install ${CLFS}/usr/bin</userinput></screen>
[02095ae]83
84 </sect2>
85
86 <sect2 id="contents-coreutils" role="content">
87 <title>Contents of Coreutils</title>
88
89 <segmentedlist>
90 <segtitle>Installed programs</segtitle>
91
92 <seglistitem>
[d2c51b1]93 <seg>[, base64, basename, cat, chgrp, chmod, chown, chroot, cksum,
[02095ae]94 comm, cp, csplit, cut, date, dd, df, dir, dircolors, dirname, du,
95 echo, env, expand, expr, factor, false, fmt, fold, groups, head,
96 hostid, hostname, id, install, join, link, ln, logname, ls, md5sum,
97 mkdir, mkfifo, mknod, mv, nice, nl, nohup, od, paste, pathchk, pinky,
98 pr, printenv, printf, ptx, pwd, readlink, rm, rmdir, seq, sha1sum,
[d2c51b1]99 sha224sum, sha256sum, sha384sum, sha512sum, shred, shuf, sleep, sort,
100 split, stat, stty, sum, sync, tac, tail, tee, test, touch, tr, true,
101 tsort, tty, uname, unexpand, uniq, unlink, users, vdir, wc, who,
102 whoami, and yes</seg>
[02095ae]103 </seglistitem>
104 </segmentedlist>
105
106 <variablelist>
107 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
108 <?dbfo list-presentation="list"?>
109 <?dbhtml list-presentation="table"?>
110
[d2c51b1]111 <varlistentry id="base64">
112 <term><command>base64</command></term>
113 <listitem>
114 <para>Base64 encode/decode data and print to standard output</para>
115 <indexterm zone="ch-system-coreutils base64">
116 <primary sortas="b-base64">base64</primary>
117 </indexterm>
118 </listitem>
119 </varlistentry>
120
[02095ae]121 <varlistentry id="basename">
122 <term><command>basename</command></term>
123 <listitem>
124 <para>Strips any path and a given suffix from a file name</para>
125 <indexterm zone="ch-system-coreutils basename">
126 <primary sortas="b-basename">basename</primary>
127 </indexterm>
128 </listitem>
129 </varlistentry>
130
131 <varlistentry id="cat">
132 <term><command>cat</command></term>
133 <listitem>
134 <para>Concatenates files to standard output</para>
135 <indexterm zone="ch-system-coreutils cat">
136 <primary sortas="b-cat">cat</primary>
137 </indexterm>
138 </listitem>
139 </varlistentry>
140
141 <varlistentry id="chgrp">
142 <term><command>chgrp</command></term>
143 <listitem>
144 <para>Changes the group ownership of files and directories</para>
145 <indexterm zone="ch-system-coreutils chgrp">
146 <primary sortas="b-chgrp">chgrp</primary>
147 </indexterm>
148 </listitem>
149 </varlistentry>
150
151 <varlistentry id="chmod">
152 <term><command>chmod</command></term>
153 <listitem>
154 <para>Changes the permissions of each file to the given mode; the mode
155 can be either a symbolic representation of the changes to make or an
156 octal number representing the new permissions</para>
157 <indexterm zone="ch-system-coreutils chmod">
158 <primary sortas="b-chmod">chmod</primary>
159 </indexterm>
160 </listitem>
161 </varlistentry>
162
163 <varlistentry id="chown">
164 <term><command>chown</command></term>
165 <listitem>
166 <para>Changes the user and/or group ownership of files and
167 directories</para>
168 <indexterm zone="ch-system-coreutils chown">
169 <primary sortas="b-chown">chown</primary>
170 </indexterm>
171 </listitem>
172 </varlistentry>
173
174 <varlistentry id="chroot">
175 <term><command>chroot</command></term>
176 <listitem>
177 <para>Runs a command with the specified directory as the
178 <filename class="directory">/</filename> directory</para>
179 <indexterm zone="ch-system-coreutils chroot">
180 <primary sortas="b-chroot">chroot</primary>
181 </indexterm>
182 </listitem>
183 </varlistentry>
184
185 <varlistentry id="cksum">
186 <term><command>cksum</command></term>
187 <listitem>
188 <para>Prints the Cyclic Redundancy Check (CRC) checksum and the byte
189 counts of each specified file</para>
190 <indexterm zone="ch-system-coreutils cksum">
191 <primary sortas="b-cksum">cksum</primary>
192 </indexterm>
193 </listitem>
194 </varlistentry>
195
196 <varlistentry id="comm">
197 <term><command>comm</command></term>
198 <listitem>
199 <para>Compares two sorted files, outputting in three columns the lines
200 that are unique and the lines that are common</para>
201 <indexterm zone="ch-system-coreutils comm">
202 <primary sortas="b-comm">comm</primary>
203 </indexterm>
204 </listitem>
205 </varlistentry>
206
207 <varlistentry id="cp">
208 <term><command>cp</command></term>
209 <listitem>
210 <para>Copies files</para>
211 <indexterm zone="ch-system-coreutils cp">
212 <primary sortas="b-cp">cp</primary>
213 </indexterm>
214 </listitem>
215 </varlistentry>
216
217 <varlistentry id="csplit">
218 <term><command>csplit</command></term>
219 <listitem>
220 <para>Splits a given file into several new files, separating them
221 according to given patterns or line numbers and outputting the byte
222 count of each new file</para>
223 <indexterm zone="ch-system-coreutils csplit">
224 <primary sortas="b-csplit">csplit</primary>
225 </indexterm>
226 </listitem>
227 </varlistentry>
228
229 <varlistentry id="cut">
230 <term><command>cut</command></term>
231 <listitem>
232 <para>Prints sections of lines, selecting the parts according to given
233 fields or positions</para>
234 <indexterm zone="ch-system-coreutils cut">
235 <primary sortas="b-cut">cut</primary>
236 </indexterm>
237 </listitem>
238 </varlistentry>
239
240 <varlistentry id="date">
241 <term><command>date</command></term>
242 <listitem>
243 <para>Displays the current time in the given format, or sets the
244 system date</para>
245 <indexterm zone="ch-system-coreutils date">
246 <primary sortas="b-date">date</primary>
247 </indexterm>
248 </listitem>
249 </varlistentry>
250
251 <varlistentry id="dd">
252 <term><command>dd</command> </term>
253 <listitem>
254 <para>Copies a file using the given block size and count, while
255 optionally performing conversions on it</para>
256 <indexterm zone="ch-system-coreutils dd">
257 <primary sortas="b-dd">dd</primary>
258 </indexterm>
259 </listitem>
260 </varlistentry>
261
262 <varlistentry id="df">
263 <term><command>df</command></term>
264 <listitem>
265 <para>Reports the amount of disk space available (and used) on all
266 mounted file systems, or only on the file systems holding the selected
267 files</para>
268 <indexterm zone="ch-system-coreutils df">
269 <primary sortas="b-df">df</primary>
270 </indexterm>
271 </listitem>
272 </varlistentry>
273
274 <varlistentry id="dir">
275 <term><command>dir</command></term>
276 <listitem>
277 <para>Lists the contents of each given directory (the same as
278 the <command>ls</command> command)</para>
279 <indexterm zone="ch-system-coreutils dir">
280 <primary sortas="b-dir">dir</primary>
281 </indexterm>
282 </listitem>
283 </varlistentry>
284
285 <varlistentry id="dircolors">
286 <term><command>dircolors</command></term>
287 <listitem>
288 <para>Outputs commands to set the <envar>LS_COLOR</envar>
289 environment variable to change the color scheme used by
290 <command>ls</command></para>
291 <indexterm zone="ch-system-coreutils dircolors">
292 <primary sortas="b-dircolors">dircolors</primary>
293 </indexterm>
294 </listitem>
295 </varlistentry>
296
297 <varlistentry id="dirname">
298 <term><command>dirname</command></term>
299 <listitem>
300 <para>Strips the non-directory suffix from a file name</para>
301 <indexterm zone="ch-system-coreutils dirname">
302 <primary sortas="b-dirname">dirname</primary>
303 </indexterm>
304 </listitem>
305 </varlistentry>
306
307 <varlistentry id="du">
308 <term><command>du</command></term>
309 <listitem>
310 <para>Reports the amount of disk space used by the current directory,
311 by each of the given directories (including all subdirectories) or by
312 each of the given files</para>
313 <indexterm zone="ch-system-coreutils du">
314 <primary sortas="b-du">du</primary>
315 </indexterm>
316 </listitem>
317 </varlistentry>
318
319 <varlistentry id="echo">
320 <term><command>echo</command></term>
321 <listitem>
322 <para>Displays the given strings</para>
323 <indexterm zone="ch-system-coreutils echo">
324 <primary sortas="b-echo">echo</primary>
325 </indexterm>
326 </listitem>
327 </varlistentry>
328
329 <varlistentry id="env">
330 <term><command>env</command></term>
331 <listitem>
332 <para>Runs a command in a modified environment</para>
333 <indexterm zone="ch-system-coreutils env">
334 <primary sortas="b-env">env</primary>
335 </indexterm>
336 </listitem>
337 </varlistentry>
338
339 <varlistentry id="expand">
340 <term><command>expand</command></term>
341 <listitem>
342 <para>Converts tabs to spaces</para>
343 <indexterm zone="ch-system-coreutils expand">
344 <primary sortas="b-expand">expand</primary>
345 </indexterm>
346 </listitem>
347 </varlistentry>
348
349 <varlistentry id="expr">
350 <term><command>expr</command></term>
351 <listitem>
352 <para>Evaluates expressions</para>
353 <indexterm zone="ch-system-coreutils expr">
354 <primary sortas="b-expr">expr</primary>
355 </indexterm>
356 </listitem>
357 </varlistentry>
358
359 <varlistentry id="factor">
360 <term><command>factor</command></term>
361 <listitem>
362 <para>Prints the prime factors of all specified integer numbers</para>
363 <indexterm zone="ch-system-coreutils factor">
364 <primary sortas="b-factor">factor</primary>
365 </indexterm>
366 </listitem>
367 </varlistentry>
368
369 <varlistentry id="false">
370 <term><command>false</command></term>
371 <listitem>
372 <para>Does nothing, unsuccessfully; it always exits with a status code
373 indicating failure</para>
374 <indexterm zone="ch-system-coreutils false">
375 <primary sortas="b-false">false</primary>
376 </indexterm>
377 </listitem>
378 </varlistentry>
379
380 <varlistentry id="fmt">
381 <term><command>fmt</command></term>
382 <listitem>
383 <para>Reformats the paragraphs in the given files</para>
384 <indexterm zone="ch-system-coreutils fmt">
385 <primary sortas="b-fmt">fmt</primary>
386 </indexterm>
387 </listitem>
388 </varlistentry>
389
390 <varlistentry id="fold">
391 <term><command>fold</command></term>
392 <listitem>
393 <para>Wraps the lines in the given files</para>
394 <indexterm zone="ch-system-coreutils fold">
395 <primary sortas="b-fold">fold</primary>
396 </indexterm>
397 </listitem>
398 </varlistentry>
399
400 <varlistentry id="groups">
401 <term><command>groups</command></term>
402 <listitem>
403 <para>Reports a user's group memberships</para>
404 <indexterm zone="ch-system-coreutils groups">
405 <primary sortas="b-groups">groups</primary>
406 </indexterm>
407 </listitem>
408 </varlistentry>
409
410 <varlistentry id="head">
411 <term><command>head</command></term>
412 <listitem>
413 <para>Prints the first ten lines (or the given number of lines)
414 of each given file</para>
415 <indexterm zone="ch-system-coreutils head">
416 <primary sortas="b-head">head</primary>
417 </indexterm>
418 </listitem>
419 </varlistentry>
420
421 <varlistentry id="hostid">
422 <term><command>hostid</command></term>
423 <listitem>
424 <para>Reports the numeric identifier (in hexadecimal) of the host</para>
425 <indexterm zone="ch-system-coreutils hostid">
426 <primary sortas="b-hostid">hostid</primary>
427 </indexterm>
428 </listitem>
429 </varlistentry>
430
431 <varlistentry id="hostname">
432 <term><command>hostname</command></term>
433 <listitem>
434 <para>Reports or sets the name of the host</para>
435 <indexterm zone="ch-system-coreutils hostname">
436 <primary sortas="b-hostname">hostname</primary>
437 </indexterm>
438 </listitem>
439 </varlistentry>
440
441 <varlistentry id="id">
442 <term><command>id</command></term>
443 <listitem>
444 <para>Reports the effective user ID, group ID, and group memberships
445 of the current user or specified user</para>
446 <indexterm zone="ch-system-coreutils id">
447 <primary sortas="b-id">id</primary>
448 </indexterm>
449 </listitem>
450 </varlistentry>
451
452 <varlistentry id="install">
453 <term><command>install</command> </term>
454 <listitem>
455 <para>Copies files while setting their permission modes and, if
456 possible, their owner and group</para>
457 <indexterm zone="ch-system-coreutils install">
458 <primary sortas="b-install">install</primary>
459 </indexterm>
460 </listitem>
461 </varlistentry>
462
463 <varlistentry id="join">
464 <term><command>join</command></term>
465 <listitem>
466 <para>Joins the lines that have identical join fields from two
467 separate files</para>
468 <indexterm zone="ch-system-coreutils join">
469 <primary sortas="b-join">join</primary>
470 </indexterm>
471 </listitem>
472 </varlistentry>
473
474 <varlistentry id="link">
475 <term><command>link</command></term>
476 <listitem>
477 <para>Creates a hard link with the given name to a file</para>
478 <indexterm zone="ch-system-coreutils link">
479 <primary sortas="b-link">link</primary>
480 </indexterm>
481 </listitem>
482 </varlistentry>
483
484 <varlistentry id="ln">
485 <term><command>ln</command></term>
486 <listitem>
487 <para>Makes hard links or soft (symbolic) links between files</para>
488 <indexterm zone="ch-system-coreutils ln">
489 <primary sortas="b-ln">ln</primary>
490 </indexterm>
491 </listitem>
492 </varlistentry>
493
494 <varlistentry id="logname">
495 <term><command>logname</command></term>
496 <listitem>
497 <para>Reports the current user's login name</para>
498 <indexterm zone="ch-system-coreutils logname">
499 <primary sortas="b-logname">logname</primary>
500 </indexterm>
501 </listitem>
502 </varlistentry>
503
504 <varlistentry id="ls">
505 <term><command>ls</command></term>
506 <listitem>
507 <para>Lists the contents of each given directory</para>
508 <indexterm zone="ch-system-coreutils ls">
509 <primary sortas="b-ls">ls</primary>
510 </indexterm>
511 </listitem>
512 </varlistentry>
513
514 <varlistentry id="md5sum">
515 <term><command>md5sum</command></term>
516 <listitem>
517 <para>Reports or checks Message Digest 5 (MD5) checksums</para>
518 <indexterm zone="ch-system-coreutils md5sum">
519 <primary sortas="b-md5sum">md5sum</primary>
520 </indexterm>
521 </listitem>
522 </varlistentry>
523
524 <varlistentry id="mkdir">
525 <term><command>mkdir</command></term>
526 <listitem>
527 <para>Creates directories with the given names</para>
528 <indexterm zone="ch-system-coreutils mkdir">
529 <primary sortas="b-mkdir">mkdir</primary>
530 </indexterm>
531 </listitem>
532 </varlistentry>
533
534 <varlistentry id="mkfifo">
535 <term><command>mkfifo</command></term>
536 <listitem>
537 <para>Creates First-In, First-Outs (FIFOs), a <quote>named
538 pipe</quote> in UNIX parlance, with the given names</para>
539 <indexterm zone="ch-system-coreutils mkfifo">
540 <primary sortas="b-mkfifo">mkfifo</primary>
541 </indexterm>
542 </listitem>
543 </varlistentry>
544
545 <varlistentry id="mknod">
546 <term><command>mknod</command></term>
547 <listitem>
548 <para>Creates device nodes with the given names; a device node is a
549 character special file, a block special file, or a FIFO</para>
550 <indexterm zone="ch-system-coreutils mknod">
551 <primary sortas="b-mknod">mknod</primary>
552 </indexterm>
553 </listitem>
554 </varlistentry>
555
556 <varlistentry id="mv">
557 <term><command>mv</command></term>
558 <listitem>
559 <para>Moves or renames files or directories</para>
560 <indexterm zone="ch-system-coreutils mv">
561 <primary sortas="b-mv">mv</primary>
562 </indexterm>
563 </listitem>
564 </varlistentry>
565
566 <varlistentry id="nice">
567 <term><command>nice</command></term>
568 <listitem>
569 <para>Runs a program with modified scheduling priority</para>
570 <indexterm zone="ch-system-coreutils nice">
571 <primary sortas="b-nice">nice</primary>
572 </indexterm>
573 </listitem>
574 </varlistentry>
575
576 <varlistentry id="nl">
577 <term><command>nl</command></term>
578 <listitem>
579 <para>Numbers the lines from the given files</para>
580 <indexterm zone="ch-system-coreutils nl">
581 <primary sortas="b-nl">nl</primary>
582 </indexterm>
583 </listitem>
584 </varlistentry>
585
586 <varlistentry id="nohup">
587 <term><command>nohup</command></term>
588 <listitem>
589 <para>Runs a command immune to hangups, with its output redirected to
590 a log file</para>
591 <indexterm zone="ch-system-coreutils nohup">
592 <primary sortas="b-nohup">nohup</primary>
593 </indexterm>
594 </listitem>
595 </varlistentry>
596
597 <varlistentry id="od">
598 <term><command>od</command></term>
599 <listitem>
600 <para>Dumps files in octal and other formats</para>
601 <indexterm zone="ch-system-coreutils od">
602 <primary sortas="b-od">od</primary>
603 </indexterm>
604 </listitem>
605 </varlistentry>
606
607 <varlistentry id="paste">
608 <term><command>paste</command></term>
609 <listitem>
610 <para>Merges the given files, joining sequentially corresponding lines
611 side by side, separated by tab characters</para>
612 <indexterm zone="ch-system-coreutils paste">
613 <primary sortas="b-paste">paste</primary>
614 </indexterm>
615 </listitem>
616 </varlistentry>
617
618 <varlistentry id="pathchk">
619 <term><command>pathchk</command></term>
620 <listitem>
621 <para>Checks if file names are valid or portable</para>
622 <indexterm zone="ch-system-coreutils pathchk">
623 <primary sortas="b-pathchk">pathchk</primary>
624 </indexterm>
625 </listitem>
626 </varlistentry>
627
628 <varlistentry id="pinky">
629 <term><command>pinky</command></term>
630 <listitem>
631 <para>Is a lightweight finger client; it reports some information
632 about the given users</para>
633 <indexterm zone="ch-system-coreutils pinky">
634 <primary sortas="b-pinky">pinky</primary>
635 </indexterm>
636 </listitem>
637 </varlistentry>
638
639 <varlistentry id="pr">
640 <term><command>pr</command></term>
641 <listitem>
642 <para>Paginates and columnates files for printing</para>
643 <indexterm zone="ch-system-coreutils pr">
644 <primary sortas="b-pr">pr</primary>
645 </indexterm>
646 </listitem>
647 </varlistentry>
648
649 <varlistentry id="printenv">
650 <term><command>printenv</command></term>
651 <listitem>
652 <para>Prints the environment</para>
653 <indexterm zone="ch-system-coreutils printenv">
654 <primary sortas="b-printenv">printenv</primary>
655 </indexterm>
656 </listitem>
657 </varlistentry>
658
659 <varlistentry id="printf">
660 <term><command>printf</command></term>
661 <listitem>
662 <para>Prints the given arguments according to the given format, much
663 like the C printf function</para>
664 <indexterm zone="ch-system-coreutils printf">
665 <primary sortas="b-printf">printf</primary>
666 </indexterm>
667 </listitem>
668 </varlistentry>
669
670 <varlistentry id="ptx">
671 <term><command>ptx</command></term>
672 <listitem>
673 <para>Produces a permuted index from the contents of the given files,
674 with each keyword in its context</para>
675 <indexterm zone="ch-system-coreutils ptx">
676 <primary sortas="b-ptx">ptx</primary>
677 </indexterm>
678 </listitem>
679 </varlistentry>
680
681 <varlistentry id="pwd">
682 <term><command>pwd</command></term>
683 <listitem>
684 <para>Reports the name of the current working directory</para>
685 <indexterm zone="ch-system-coreutils pwd">
686 <primary sortas="b-pwd">pwd</primary>
687 </indexterm>
688 </listitem>
689 </varlistentry>
690
691 <varlistentry id="readlink">
692 <term><command>readlink</command></term>
693 <listitem>
694 <para>Reports the value of the given symbolic link</para>
695 <indexterm zone="ch-system-coreutils readlink">
696 <primary sortas="b-readlink">readlink</primary>
697 </indexterm>
698 </listitem>
699 </varlistentry>
700
701 <varlistentry id="rm">
702 <term><command>rm</command></term>
703 <listitem>
704 <para>Removes files or directories</para>
705 <indexterm zone="ch-system-coreutils rm">
706 <primary sortas="b-rm">rm</primary>
707 </indexterm>
708 </listitem>
709 </varlistentry>
710
711 <varlistentry id="rmdir">
712 <term><command>rmdir</command></term>
713 <listitem>
714 <para>Removes directories if they are empty</para>
715 <indexterm zone="ch-system-coreutils rmdir">
716 <primary sortas="b-rmdir">rmdir</primary>
717 </indexterm>
718 </listitem>
719 </varlistentry>
720
721 <varlistentry id="seq">
722 <term><command>seq</command></term>
723 <listitem>
724 <para>Prints a sequence of numbers within a given range and with a
725 given increment</para>
726 <indexterm zone="ch-system-coreutils seq">
727 <primary sortas="b-seq">seq</primary>
728 </indexterm>
729 </listitem>
730 </varlistentry>
731
732 <varlistentry id="sha1sum">
733 <term><command>sha1sum</command></term>
734 <listitem>
735 <para>Prints or checks 160-bit Secure Hash Algorithm 1 (SHA1)
736 checksums</para>
737 <indexterm zone="ch-system-coreutils sha1sum">
738 <primary sortas="b-sha1sum">sha1sum</primary>
739 </indexterm>
740 </listitem>
741 </varlistentry>
742
[d2c51b1]743 <varlistentry id="sha224sum">
744 <term><command>sha224sum</command></term>
745 <listitem>
746 <para>Prints or checks SHA224 checksums</para>
747 <indexterm zone="ch-system-coreutils sha224sum">
748 <primary sortas="b-sha224sum">sha224sum</primary>
749 </indexterm>
750 </listitem>
751 </varlistentry>
752
753 <varlistentry id="sha256sum">
754 <term><command>sha256sum</command></term>
755 <listitem>
756 <para>Prints or checks SHA256 checksums</para>
757 <indexterm zone="ch-system-coreutils sha256sum">
758 <primary sortas="b-sha256sum">sha256sum</primary>
759 </indexterm>
760 </listitem>
761 </varlistentry>
762
763 <varlistentry id="sha384sum">
764 <term><command>sha384sum</command></term>
765 <listitem>
766 <para>Prints or checks SHA384 checksums</para>
767 <indexterm zone="ch-system-coreutils sha384sum">
768 <primary sortas="b-sha384sum">sha384sum</primary>
769 </indexterm>
770 </listitem>
771 </varlistentry>
772
773 <varlistentry id="sha512sum">
774 <term><command>sha512sum</command></term>
775 <listitem>
776 <para>Prints or checks SHA512 checksums</para>
777 <indexterm zone="ch-system-coreutils sha512sum">
778 <primary sortas="b-sha512sum">sha512sum</primary>
779 </indexterm>
780 </listitem>
781 </varlistentry>
782
[02095ae]783 <varlistentry id="shred">
784 <term><command>shred</command></term>
785 <listitem>
786 <para>Overwrites the given files repeatedly with complex patterns,
787 making it difficult to recover the data</para>
788 <indexterm zone="ch-system-coreutils shred">
789 <primary sortas="b-shred">shred</primary>
790 </indexterm>
791 </listitem>
792 </varlistentry>
793
[d2c51b1]794 <varlistentry id="shuf">
795 <term><command>shuf</command></term>
796 <listitem>
797 <para>Write a random permutation of the input lines to standard output or a file</para>
798 <indexterm zone="ch-system-coreutils shuf">
799 <primary sortas="b-shuf">shuf</primary>
800 </indexterm>
801 </listitem>
802 </varlistentry>
803
[02095ae]804 <varlistentry id="sleep">
805 <term><command>sleep</command></term>
806 <listitem>
807 <para>Pauses for the given amount of time</para>
808 <indexterm zone="ch-system-coreutils sleep">
809 <primary sortas="b-sleep">sleep</primary>
810 </indexterm>
811 </listitem>
812 </varlistentry>
813
814 <varlistentry id="sort">
815 <term><command>sort</command></term>
816 <listitem>
817 <para>Sorts the lines from the given files</para>
818 <indexterm zone="ch-system-coreutils sort">
819 <primary sortas="b-sort">sort</primary>
820 </indexterm>
821 </listitem>
822 </varlistentry>
823
824 <varlistentry id="split">
825 <term><command>split</command></term>
826 <listitem>
827 <para>Splits the given file into pieces, by size or by number of
828 lines</para>
829 <indexterm zone="ch-system-coreutils split">
830 <primary sortas="b-split">split</primary>
831 </indexterm>
832 </listitem>
833 </varlistentry>
834
835 <varlistentry id="stat">
836 <term><command>stat</command></term>
837 <listitem>
838 <para>Displays file or filesystem status</para>
839 <indexterm zone="ch-system-coreutils stat">
840 <primary sortas="b-stat">stat</primary>
841 </indexterm>
842 </listitem>
843 </varlistentry>
844
845 <varlistentry id="stty">
846 <term><command>stty</command></term>
847 <listitem>
848 <para>Sets or reports terminal line settings</para>
849 <indexterm zone="ch-system-coreutils stty">
850 <primary sortas="b-stty">stty</primary>
851 </indexterm>
852 </listitem>
853 </varlistentry>
854
855 <varlistentry id="sum">
856 <term><command>sum</command></term>
857 <listitem>
858 <para>Prints checksum and block counts for each given file</para>
859 <indexterm zone="ch-system-coreutils sum">
860 <primary sortas="b-sum">sum</primary>
861 </indexterm>
862 </listitem>
863 </varlistentry>
864
865 <varlistentry id="sync">
866 <term><command>sync</command></term>
867 <listitem>
868 <para>Flushes file system buffers; it forces changed blocks to disk
869 and updates the super block</para>
870 <indexterm zone="ch-system-coreutils sync">
871 <primary sortas="b-sync">sync</primary>
872 </indexterm>
873 </listitem>
874 </varlistentry>
875
876 <varlistentry id="tac">
877 <term><command>tac</command></term>
878 <listitem>
879 <para>Concatenates the given files in reverse</para>
880 <indexterm zone="ch-system-coreutils tac">
881 <primary sortas="b-tac">tac</primary>
882 </indexterm>
883 </listitem>
884 </varlistentry>
885
886 <varlistentry id="tail">
887 <term><command>tail</command></term>
888 <listitem>
889 <para>Prints the last ten lines (or the given number of lines) of each
890 given file</para>
891 <indexterm zone="ch-system-coreutils tail">
892 <primary sortas="b-tail">tail</primary>
893 </indexterm>
894 </listitem>
895 </varlistentry>
896
897 <varlistentry id="tee">
898 <term><command>tee</command></term>
899 <listitem>
900 <para>Reads from standard input while writing both to standard output
901 and to the given files</para>
902 <indexterm zone="ch-system-coreutils tee">
903 <primary sortas="b-tee">tee</primary>
904 </indexterm>
905 </listitem>
906 </varlistentry>
907
908 <varlistentry id="test">
[b16b4dc]909 <term><command>test</command> or <command>[</command></term>
[02095ae]910 <listitem>
911 <para>Compares values and checks file types</para>
912 <indexterm zone="ch-system-coreutils test">
913 <primary sortas="b-test">test</primary>
914 </indexterm>
915 </listitem>
916 </varlistentry>
917
918 <varlistentry id="touch">
919 <term><command>touch</command></term>
920 <listitem>
921 <para>Changes file timestamps, setting the access and modification
922 times of the given files to the current time; files that do not exist
923 are created with zero length</para>
924 <indexterm zone="ch-system-coreutils touch">
925 <primary sortas="b-touch">touch</primary>
926 </indexterm>
927 </listitem>
928 </varlistentry>
929
930 <varlistentry id="tr">
931 <term><command>tr</command></term>
932 <listitem>
933 <para>Translates, squeezes, and deletes the given characters from
934 standard input</para>
935 <indexterm zone="ch-system-coreutils tr">
936 <primary sortas="b-tr">tr</primary>
937 </indexterm>
938 </listitem>
939 </varlistentry>
940
941 <varlistentry id="true">
942 <term><command>true</command></term>
943 <listitem>
944 <para>Does nothing, successfully; it always exits with a status code
945 indicating success</para>
946 <indexterm zone="ch-system-coreutils true">
947 <primary sortas="b-true">true</primary>
948 </indexterm>
949 </listitem>
950 </varlistentry>
951
952 <varlistentry id="tsort">
953 <term><command>tsort</command></term>
954 <listitem>
955 <para>Performs a topological sort; it writes a completely ordered list
956 according to the partial ordering in a given file</para>
957 <indexterm zone="ch-system-coreutils tsort">
958 <primary sortas="b-tsort">tsort</primary>
959 </indexterm>
960 </listitem>
961 </varlistentry>
962
963 <varlistentry id="tty">
964 <term><command>tty</command></term>
965 <listitem>
966 <para>Reports the file name of the terminal connected to standard
967 input</para>
968 <indexterm zone="ch-system-coreutils tty">
969 <primary sortas="b-tty">tty</primary>
970 </indexterm>
971 </listitem>
972 </varlistentry>
973
974 <varlistentry id="uname">
975 <term><command>uname</command></term>
976 <listitem>
977 <para>Reports system information</para>
978 <indexterm zone="ch-system-coreutils uname">
979 <primary sortas="b-uname">uname</primary>
980 </indexterm>
981 </listitem>
982 </varlistentry>
983
984 <varlistentry id="unexpand">
985 <term><command>unexpand</command></term>
986 <listitem>
987 <para>Converts spaces to tabs</para>
988 <indexterm zone="ch-system-coreutils unexpand">
989 <primary sortas="b-unexpand">unexpand</primary>
990 </indexterm>
991 </listitem>
992 </varlistentry>
993
994 <varlistentry id="uniq">
995 <term><command>uniq</command></term>
996 <listitem>
997 <para>Discards all but one of successive identical lines</para>
998 <indexterm zone="ch-system-coreutils uniq">
999 <primary sortas="b-uniq">uniq</primary>
1000 </indexterm>
1001 </listitem>
1002 </varlistentry>
1003
1004 <varlistentry id="unlink">
1005 <term><command>unlink</command></term>
1006 <listitem>
1007 <para>Removes the given file</para>
1008 <indexterm zone="ch-system-coreutils unlink">
1009 <primary sortas="b-unlink">unlink</primary>
1010 </indexterm>
1011 </listitem>
1012 </varlistentry>
1013
1014 <varlistentry id="users">
1015 <term><command>users</command></term>
1016 <listitem>
1017 <para>Reports the names of the users currently logged on</para>
1018 <indexterm zone="ch-system-coreutils users">
1019 <primary sortas="b-users">users</primary>
1020 </indexterm>
1021 </listitem>
1022 </varlistentry>
1023
1024 <varlistentry id="vdir">
1025 <term><command>vdir</command></term>
1026 <listitem>
1027 <para>Is the same as <command>ls -l</command></para>
1028 <indexterm zone="ch-system-coreutils vdir">
1029 <primary sortas="b-vdir">vdir</primary>
1030 </indexterm>
1031 </listitem>
1032 </varlistentry>
1033
1034 <varlistentry id="wc">
1035 <term><command>wc</command></term>
1036 <listitem>
1037 <para>Reports the number of lines, words, and bytes for each given
1038 file, as well as a total line when more than one file is given</para>
1039 <indexterm zone="ch-system-coreutils wc">
1040 <primary sortas="b-wc">wc</primary>
1041 </indexterm>
1042 </listitem>
1043 </varlistentry>
1044
1045 <varlistentry id="who">
1046 <term><command>who</command></term>
1047 <listitem>
1048 <para>Reports who is logged on</para>
1049 <indexterm zone="ch-system-coreutils who">
1050 <primary sortas="b-who">who</primary>
1051 </indexterm>
1052 </listitem>
1053 </varlistentry>
1054
1055 <varlistentry id="whoami">
1056 <term><command>whoami</command></term>
1057 <listitem>
1058 <para>Reports the user name associated with the current effective
1059 user ID</para>
1060 <indexterm zone="ch-system-coreutils whoami">
1061 <primary sortas="b-whoami">whoami</primary>
1062 </indexterm>
1063 </listitem>
1064 </varlistentry>
1065
1066 <varlistentry id="yes">
1067 <term><command>yes</command></term>
1068 <listitem>
1069 <para>Repeatedly outputs <quote>y</quote> or a given string until
1070 killed</para>
1071 <indexterm zone="ch-system-coreutils yes">
1072 <primary sortas="b-yes">yes</primary>
1073 </indexterm>
1074 </listitem>
1075 </varlistentry>
1076
1077 </variablelist>
1078
1079 </sect2>
1080
1081</sect1>
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