Ignore:
Timestamp:
02/19/2005 10:16:42 PM (19 years ago)
Author:
Gerard Beekmans <gerard@…>
Branches:
10.0, 10.0-rc1, 10.1, 10.1-rc1, 11.0, 11.0-rc1, 11.0-rc2, 11.0-rc3, 11.1, 11.1-rc1, 11.2, 11.2-rc1, 11.3, 11.3-rc1, 12.0, 12.0-rc1, 12.1, 12.1-rc1, 6.1, 6.1.1, 6.3, 6.4, 6.5, 6.6, 6.7, 6.8, 7.0, 7.1, 7.2, 7.3, 7.4, 7.5, 7.5-systemd, 7.6, 7.6-systemd, 7.7, 7.7-systemd, 7.8, 7.8-systemd, 7.9, 7.9-systemd, 8.0, 8.1, 8.2, 8.3, 8.4, 9.0, 9.1, arm, bdubbs/gcc13, ml-11.0, multilib, renodr/libudev-from-systemd, s6-init, trunk, xry111/arm64, xry111/arm64-12.0, xry111/clfs-ng, xry111/lfs-next, xry111/loongarch, xry111/loongarch-12.0, xry111/loongarch-12.1, xry111/mips64el, xry111/pip3, xry111/rust-wip-20221008, xry111/update-glibc
Children:
3d31fc4
Parents:
2f9131f
Message:

Trunk is now identical to Testing

git-svn-id: ​http://svn.linuxfromscratch.org/LFS/trunk/BOOK@4648 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

File:
1 edited

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  • chapter06/coreutils.xml

    r2f9131f r81fd230  
    44  %general-entities;
    55]>
    6 <sect1 id="ch-system-coreutils" xreflabel="Coreutils" role="wrap">
     6<sect1 id="ch-system-coreutils" role="wrap">
    77<title>Coreutils-&coreutils-version;</title>
    88<?dbhtml filename="coreutils.html"?>
    … …  
    1111
    1212<sect2 role="package"><title/>
     13<para>The Coreutils package contains utilities for showing and setting the
     14basic system characteristics.</para>
    1315
    1416<segmentedlist>
    … …  
    1820</segmentedlist>
    1921
     22<segmentedlist>
     23<segtitle>Coreutils installation depends on</segtitle>
     24<seglistitem><seg>Bash, Binutils, Coreutils, Diffutils, GCC,
     25Gettext, Glibc, Grep, Make, Perl, and Sed</seg></seglistitem>
     26</segmentedlist>
    2027</sect2>
    2128
    … …  
    2330<title>Installation of Coreutils</title>
    2431
    25 <para>Apply a patch:</para>
     32<para>A known issue with the <command>uname</command> program from
     33this package is that the <parameter>-p</parameter> switch always
     34returns <computeroutput>unknown</computeroutput>. The following patch
     35fixes this behavior for Intel architectures:</para>
    2636
    2737<screen><userinput>patch -Np1 -i ../coreutils-&coreutils-version;-uname-2.patch</userinput></screen>
    2838
    29 <para>Apply another patch:</para>
     39<para>Prevent Coreutils from installing binaries that will be later be
     40installed by other packages:</para>
    3041
    3142<screen><userinput>patch -Np1 -i \
    … …  
    3950
    4051<screen><userinput>make</userinput></screen>
     52
     53<para>The test suite of Coreutils makes several assumptions about the
     54presence of files and users that are not valid this early in the LFS
     55build. Therefore, additional items need to be set up before running
     56the tests. Skip down to <quote>Install the package</quote> if
     57not running the test suite.</para>
    4158
    4259<para>Create two dummy groups and a dummy user name:</para>
    … …  
    4663echo "dummy:x:1000:1000:::/bin/bash" &gt;&gt; /etc/passwd</userinput></screen>
    4764
    48 <para>Run the <emphasis>root</emphasis> tests:</para>
     65<para>Now the test suite is ready to be run. First, run the tests that
     66are meant to be run as user <emphasis>root</emphasis>:</para>
    4967
    5068<screen><userinput>make NON_ROOT_USERNAME=dummy check-root</userinput></screen>
    5169
    52 <para>Run the user tests:</para>
     70<para>Then run the remainder of the tests as the
     71<emphasis>dummy</emphasis> user:</para>
    5372
    5473<screen><userinput>src/su dummy -c "make RUN_EXPENSIVE_TESTS=yes check"</userinput></screen>
    5574
    56 <para>Remove the dummy user and groups:</para>
     75<para>When testing is complete, remove the dummy user and
     76groups:</para>
    5777
    5878<screen><userinput>sed -i '/dummy/d' /etc/passwd /etc/group</userinput></screen>
    … …  
    6282<screen><userinput>make install</userinput></screen>
    6383
    64 <para>And move some programs to their proper locations:</para>
     84<para>Move programs to the proper locations:</para>
    6585
    6686<screen><userinput>mv /usr/bin/{[,basename,cat,chgrp,chmod,chown,cp,dd,df} /bin
    … …  
    7090mv /usr/bin/chroot /usr/sbin</userinput></screen>
    7191
    72 <para>Create a symlink:</para>
     92<para>Finally, create a symlink to be FHS-compliant:</para>
    7393
    7494<screen><userinput>ln -s ../../bin/install /usr/bin</userinput></screen>
    … …  
    7999<sect2 id="contents-coreutils" role="content"><title>Contents of Coreutils</title>
    80100
    81 <para>See testing</para>
     101<segmentedlist>
     102<segtitle>Installed programs</segtitle>
     103<seglistitem><seg>basename, cat, chgrp, chmod, chown, chroot, cksum,
     104comm, cp, csplit, cut, date, dd, df, dir, dircolors, dirname, du,
     105echo, env, expand, expr, factor, false, fmt, fold, groups, head,
     106hostid, hostname, id, install, join, link, ln, logname, ls, md5sum,
     107mkdir, mkfifo, mknod, mv, nice, nl, nohup, od, paste, pathchk, pinky,
     108pr, printenv, printf, ptx, pwd, readlink, rm, rmdir, seq, sha1sum,
     109shred, sleep, sort, split, stat, stty, sum, sync, tac, tail, tee,
     110test, touch, tr, true, tsort, tty, uname, unexpand, uniq, unlink,
     111users, vdir, wc, who, whoami, and yes</seg></seglistitem>
     112</segmentedlist>
     113
     114<variablelist><bridgehead renderas="sect3">Short Descriptions</bridgehead>
     115<?dbfo list-presentation="list"?>
     116
     117<varlistentry id="basename">
     118<term><command>basename</command></term>
     119<listitem>
     120<para>Strips any path and a given suffix from a file name</para>
     121<indexterm zone="ch-system-coreutils basename"><primary sortas="b-basename">basename</primary></indexterm>
     122</listitem>
     123</varlistentry>
     124
     125<varlistentry id="cat">
     126<term><command>cat</command></term>
     127<listitem>
     128<para>Concatenates files to standard output</para>
     129<indexterm zone="ch-system-coreutils cat"><primary sortas="b-cat">cat</primary></indexterm>
     130</listitem>
     131</varlistentry>
     132
     133<varlistentry id="chgrp">
     134<term><command>chgrp</command></term>
     135<listitem>
     136<para>Changes the group ownership of each given file to the given
     137group; the group can either be either given a name or a numeric
     138ID</para>
     139<indexterm zone="ch-system-coreutils chgrp"><primary sortas="b-chgrp">chgrp</primary></indexterm>
     140</listitem>
     141</varlistentry>
     142
     143<varlistentry id="chmod">
     144<term><command>chmod</command></term>
     145<listitem>
     146<para>Changes the permissions of each file to the given mode; the mode
     147can be either a symbolic representation of the changes to make or an
     148octal number representing the new permissions</para>
     149<indexterm zone="ch-system-coreutils chmod"><primary sortas="b-chmod">chmod</primary></indexterm>
     150</listitem>
     151</varlistentry>
     152
     153<varlistentry id="chown">
     154<term><command>chown</command></term>
     155<listitem>
     156<para>Changes the user and/or group ownership of
     157each given file to the given user/group pair</para>
     158<indexterm zone="ch-system-coreutils chown"><primary sortas="b-chown">chown</primary></indexterm>
     159</listitem>
     160</varlistentry>
     161
     162<varlistentry id="chroot">
     163<term><command>chroot</command></term>
     164<listitem>
     165<para>Runs a command with the specified directory as the
     166<filename class="directory">/</filename> directory</para>
     167<indexterm zone="ch-system-coreutils chroot"><primary sortas="b-chroot">chroot</primary></indexterm>
     168</listitem>
     169</varlistentry>
     170
     171<varlistentry id="cksum">
     172<term><command>cksum</command></term>
     173<listitem>
     174<para>Prints the Cyclic Redundancy Check (CRC) checksum and the byte
     175counts of each specified file</para>
     176<indexterm zone="ch-system-coreutils cksum"><primary sortas="b-cksum">cksum</primary></indexterm>
     177</listitem>
     178</varlistentry>
     179
     180<varlistentry id="comm">
     181<term><command>comm</command></term>
     182<listitem>
     183<para>Compares two sorted files, outputting in three columns the lines
     184that are unique and the lines that are common</para>
     185<indexterm zone="ch-system-coreutils comm"><primary sortas="b-comm">comm</primary></indexterm>
     186</listitem>
     187</varlistentry>
     188
     189<varlistentry id="cp">
     190<term><command>cp</command></term>
     191<listitem>
     192<para>Copies files</para>
     193<indexterm zone="ch-system-coreutils cp"><primary sortas="b-cp">cp</primary></indexterm>
     194</listitem>
     195</varlistentry>
     196
     197<varlistentry id="csplit">
     198<term><command>csplit</command></term>
     199<listitem>
     200<para>Splits a given file into several new files, separating them
     201according to given patterns or line numbers and outputting the byte
     202count of each new file</para>
     203<indexterm zone="ch-system-coreutils csplit"><primary sortas="b-csplit">csplit</primary></indexterm>
     204</listitem>
     205</varlistentry>
     206
     207<varlistentry id="cut">
     208<term><command>cut</command></term>
     209<listitem>
     210<para>Prints sections of lines, selecting the parts according to given
     211fields or positions</para>
     212<indexterm zone="ch-system-coreutils cut"><primary sortas="b-cut">cut</primary></indexterm>
     213</listitem>
     214</varlistentry>
     215
     216<varlistentry id="date">
     217<term><command>date</command></term>
     218<listitem>
     219<para>Displays the current time in the given format, or sets the
     220system date</para>
     221<indexterm zone="ch-system-coreutils date"><primary sortas="b-date">date</primary></indexterm>
     222</listitem>
     223</varlistentry>
     224
     225<varlistentry id="dd">
     226<term><command>dd</command> </term>
     227<listitem>
     228<para>Copies a file using the given block size and count, while
     229optionally performing conversions on it</para>
     230<indexterm zone="ch-system-coreutils dd"><primary sortas="b-dd">dd</primary></indexterm>
     231</listitem>
     232</varlistentry>
     233
     234<varlistentry id="df">
     235<term><command>df</command></term>
     236<listitem>
     237<para>Reports the amount of disk space available (and used) on all
     238mounted file systems, or only on the file systems holding the selected
     239files</para>
     240<indexterm zone="ch-system-coreutils df"><primary sortas="b-df">df</primary></indexterm>
     241</listitem>
     242</varlistentry>
     243
     244<varlistentry id="dir">
     245<term><command>dir</command></term>
     246<listitem>
     247<para>Lists the contents of each given directory (the same as
     248the <command>ls</command> command)</para>
     249<indexterm zone="ch-system-coreutils dir"><primary sortas="b-dir">dir</primary></indexterm>
     250</listitem>
     251</varlistentry>
     252
     253<varlistentry id="dircolors">
     254<term><command>dircolors</command></term>
     255<listitem>
     256<para>Outputs commands to set the <envar>LS_COLOR</envar>
     257environment variable to change the color scheme used by
     258<command>ls</command></para>
     259<indexterm zone="ch-system-coreutils dircolors"><primary sortas="b-dircolors">dircolors</primary></indexterm>
     260</listitem>
     261</varlistentry>
     262
     263<varlistentry id="dirname">
     264<term><command>dirname</command></term>
     265<listitem>
     266<para>Strips the non-directory suffix from a file name</para>
     267<indexterm zone="ch-system-coreutils dirname"><primary sortas="b-dirname">dirname</primary></indexterm>
     268</listitem>
     269</varlistentry>
     270
     271<varlistentry id="du">
     272<term><command>du</command></term>
     273<listitem>
     274<para>Reports the amount of disk space used by the current directory,
     275by each of the given directories (including all subdirectories) or by
     276each of the given files</para>
     277<indexterm zone="ch-system-coreutils du"><primary sortas="b-du">du</primary></indexterm>
     278</listitem>
     279</varlistentry>
     280
     281<varlistentry id="echo">
     282<term><command>echo</command></term>
     283<listitem>
     284<para>Displays the given strings</para>
     285<indexterm zone="ch-system-coreutils echo"><primary sortas="b-echo">echo</primary></indexterm>
     286</listitem>
     287</varlistentry>
     288
     289<varlistentry id="env">
     290<term><command>env</command></term>
     291<listitem>
     292<para>Runs a command in a modified environment</para>
     293<indexterm zone="ch-system-coreutils env"><primary sortas="b-env">env</primary></indexterm>
     294</listitem>
     295</varlistentry>
     296
     297<varlistentry id="expand">
     298<term><command>expand</command></term>
     299<listitem>
     300<para>Converts tabs to spaces</para>
     301<indexterm zone="ch-system-coreutils expand"><primary sortas="b-expand">expand</primary></indexterm>
     302</listitem>
     303</varlistentry>
     304
     305<varlistentry id="expr">
     306<term><command>expr</command></term>
     307<listitem>
     308<para>Evaluates expressions</para>
     309<indexterm zone="ch-system-coreutils expr"><primary sortas="b-expr">expr</primary></indexterm>
     310</listitem>
     311</varlistentry>
     312
     313<varlistentry id="factor">
     314<term><command>factor</command></term>
     315<listitem>
     316<para>Prints the prime factors of all specified integer numbers</para>
     317<indexterm zone="ch-system-coreutils factor"><primary sortas="b-factor">factor</primary></indexterm>
     318</listitem>
     319</varlistentry>
     320
     321<varlistentry id="false">
     322<term><command>false</command></term>
     323<listitem>
     324<para>Does nothing, unsuccessfully; it always exits with a status code
     325indicating failure</para>
     326<indexterm zone="ch-system-coreutils false"><primary sortas="b-false">false</primary></indexterm>
     327</listitem>
     328</varlistentry>
     329
     330<varlistentry id="fmt">
     331<term><command>fmt</command></term>
     332<listitem>
     333<para>Reformats the paragraphs in the given files</para>
     334<indexterm zone="ch-system-coreutils fmt"><primary sortas="b-fmt">fmt</primary></indexterm>
     335</listitem>
     336</varlistentry>
     337
     338<varlistentry id="fold">
     339<term><command>fold</command></term>
     340<listitem>
     341<para>Wraps the lines in the given files</para>
     342<indexterm zone="ch-system-coreutils fold"><primary sortas="b-fold">fold</primary></indexterm>
     343</listitem>
     344</varlistentry>
     345
     346<varlistentry id="groups-coreutils">
     347<term><command>groups</command></term>
     348<listitem>
     349<para>Reports a user's group memberships</para>
     350<indexterm zone="ch-system-coreutils groups-coreutils"><primary sortas="b-groups-coreutils">groups</primary></indexterm>
     351</listitem>
     352</varlistentry>
     353
     354<varlistentry id="head">
     355<term><command>head</command></term>
     356<listitem>
     357<para>Prints the first ten lines (or the given number of lines) of each given file</para>
     358<indexterm zone="ch-system-coreutils head"><primary sortas="b-head">head</primary></indexterm>
     359</listitem>
     360</varlistentry>
     361
     362<varlistentry id="hostid">
     363<term><command>hostid</command></term>
     364<listitem>
     365<para>Reports the numeric identifier (in hexadecimal) of the host</para>
     366<indexterm zone="ch-system-coreutils hostid"><primary sortas="b-hostid">hostid</primary></indexterm>
     367</listitem>
     368</varlistentry>
     369
     370<varlistentry id="hostname">
     371<term><command>hostname</command></term>
     372<listitem>
     373<para>Reports or sets the name of the host</para>
     374<indexterm zone="ch-system-coreutils hostname"><primary sortas="b-hostname">hostname</primary></indexterm>
     375</listitem>
     376</varlistentry>
     377
     378<varlistentry id="id">
     379<term><command>id</command></term>
     380<listitem>
     381<para>Reports the effective user ID, group ID, and
     382group memberships of the current user or specified user</para>
     383<indexterm zone="ch-system-coreutils id"><primary sortas="b-id">id</primary></indexterm>
     384</listitem>
     385</varlistentry>
     386
     387<varlistentry id="install">
     388<term><command>install</command> </term>
     389<listitem>
     390<para>Copies files while setting their
     391permission modes and, if possible, their owner and group</para>
     392<indexterm zone="ch-system-coreutils install"><primary sortas="b-install">install</primary></indexterm>
     393</listitem>
     394</varlistentry>
     395
     396<varlistentry id="join">
     397<term><command>join</command></term>
     398<listitem>
     399<para>Joins the lines that have identical join fields from two
     400separate files</para>
     401<indexterm zone="ch-system-coreutils join"><primary sortas="b-join">join</primary></indexterm>
     402</listitem>
     403</varlistentry>
     404
     405<varlistentry id="link">
     406<term><command>link</command></term>
     407<listitem>
     408<para>Creates a hard link with the given name to a file</para>
     409<indexterm zone="ch-system-coreutils link"><primary sortas="b-link">link</primary></indexterm>
     410</listitem>
     411</varlistentry>
     412
     413<varlistentry id="ln">
     414<term><command>ln</command></term>
     415<listitem>
     416<para>Makes hard links or soft (symbolic) links between files</para>
     417<indexterm zone="ch-system-coreutils ln"><primary sortas="b-ln">ln</primary></indexterm>
     418</listitem>
     419</varlistentry>
     420
     421<varlistentry id="logname">
     422<term><command>logname</command></term>
     423<listitem>
     424<para>Reports the current user's login name</para>
     425<indexterm zone="ch-system-coreutils logname"><primary sortas="b-logname">logname</primary></indexterm>
     426</listitem>
     427</varlistentry>
     428
     429<varlistentry id="ls">
     430<term><command>ls</command></term>
     431<listitem>
     432<para>Lists the contents of each given directory</para>
     433<indexterm zone="ch-system-coreutils ls"><primary sortas="b-ls">ls</primary></indexterm>
     434</listitem>
     435</varlistentry>
     436
     437<varlistentry id="md5sum">
     438<term><command>md5sum</command></term>
     439<listitem>
     440<para>Reports or checks Message Digest 5 (MD5) checksums</para>
     441<indexterm zone="ch-system-coreutils md5sum"><primary sortas="b-md5sum">md5sum</primary></indexterm>
     442</listitem>
     443</varlistentry>
     444
     445<varlistentry id="mkdir">
     446<term><command>mkdir</command></term>
     447<listitem>
     448<para>Creates directories with the given names</para>
     449<indexterm zone="ch-system-coreutils mkdir"><primary sortas="b-mkdir">mkdir</primary></indexterm>
     450</listitem>
     451</varlistentry>
     452
     453<varlistentry id="mkfifo">
     454<term><command>mkfifo</command></term>
     455<listitem>
     456<para>Creates First-In, First-Outs (FIFOs), a <quote>named
     457pipe</quote> in UNIX parlance, with the given names</para>
     458<indexterm zone="ch-system-coreutils mkfifo"><primary sortas="b-mkfifo">mkfifo</primary></indexterm>
     459</listitem>
     460</varlistentry>
     461
     462<varlistentry id="mknod">
     463<term><command>mknod</command></term>
     464<listitem>
     465<para>Creates device nodes with the given names; a device node is a
     466character special file, a block special file, or a FIFO</para>
     467<indexterm zone="ch-system-coreutils mknod"><primary sortas="b-mknod">mknod</primary></indexterm>
     468</listitem>
     469</varlistentry>
     470
     471<varlistentry id="mv">
     472<term><command>mv</command></term>
     473<listitem>
     474<para>Moves or renames files or directories</para>
     475<indexterm zone="ch-system-coreutils mv"><primary sortas="b-mv">mv</primary></indexterm>
     476</listitem>
     477</varlistentry>
     478
     479<varlistentry id="nice">
     480<term><command>nice</command></term>
     481<listitem>
     482<para>Runs a program with modified scheduling priority</para>
     483<indexterm zone="ch-system-coreutils nice"><primary sortas="b-nice">nice</primary></indexterm>
     484</listitem>
     485</varlistentry>
     486
     487<varlistentry id="nl">
     488<term><command>nl</command></term>
     489<listitem>
     490<para>Numbers the lines from the given files</para>
     491<indexterm zone="ch-system-coreutils nl"><primary sortas="b-nl">nl</primary></indexterm>
     492</listitem>
     493</varlistentry>
     494
     495<varlistentry id="nohup">
     496<term><command>nohup</command></term>
     497<listitem>
     498<para>Runs a command immune to hangups, with its output redirected to
     499a log file</para>
     500<indexterm zone="ch-system-coreutils nohup"><primary sortas="b-nohup">nohup</primary></indexterm>
     501</listitem>
     502</varlistentry>
     503
     504<varlistentry id="od">
     505<term><command>od</command></term>
     506<listitem>
     507<para>Dumps files in octal and other formats</para>
     508<indexterm zone="ch-system-coreutils od"><primary sortas="b-od">od</primary></indexterm>
     509</listitem>
     510</varlistentry>
     511
     512<varlistentry id="paste">
     513<term><command>paste</command></term>
     514<listitem>
     515<para>Merges the given files, joining sequentially corresponding lines
     516side by side, separated by tab characters</para>
     517<indexterm zone="ch-system-coreutils paste"><primary sortas="b-paste">paste</primary></indexterm>
     518</listitem>
     519</varlistentry>
     520
     521<varlistentry id="pathchk">
     522<term><command>pathchk</command></term>
     523<listitem>
     524<para>Checks if file names are valid or portable</para>
     525<indexterm zone="ch-system-coreutils pathchk"><primary sortas="b-pathchk">pathchk</primary></indexterm>
     526</listitem>
     527</varlistentry>
     528
     529<varlistentry id="pinky">
     530<term><command>pinky</command></term>
     531<listitem>
     532<para>Is a lightweight finger client; it reports some information about the given users</para>
     533<indexterm zone="ch-system-coreutils pinky"><primary sortas="b-pinky">pinky</primary></indexterm>
     534</listitem>
     535</varlistentry>
     536
     537<varlistentry id="pr">
     538<term><command>pr</command></term>
     539<listitem>
     540<para>Paginates and columnates files for printing</para>
     541<indexterm zone="ch-system-coreutils pr"><primary sortas="b-pr">pr</primary></indexterm>
     542</listitem>
     543</varlistentry>
     544
     545<varlistentry id="printenv">
     546<term><command>printenv</command></term>
     547<listitem>
     548<para>Prints the environment</para>
     549<indexterm zone="ch-system-coreutils printenv"><primary sortas="b-printenv">printenv</primary></indexterm>
     550</listitem>
     551</varlistentry>
     552
     553<varlistentry id="printf">
     554<term><command>printf</command></term>
     555<listitem>
     556<para>Prints the given arguments according to the given format, much
     557like the C printf function</para>
     558<indexterm zone="ch-system-coreutils printf"><primary sortas="b-printf">printf</primary></indexterm>
     559</listitem>
     560</varlistentry>
     561
     562<varlistentry id="ptx">
     563<term><command>ptx</command></term>
     564<listitem>
     565<para>Produces a permuted index from the contents of the given files,
     566with each keyword in its context</para>
     567<indexterm zone="ch-system-coreutils ptx"><primary sortas="b-ptx">ptx</primary></indexterm>
     568</listitem>
     569</varlistentry>
     570
     571<varlistentry id="pwd">
     572<term><command>pwd</command></term>
     573<listitem>
     574<para>Reports the name of the current working directory</para>
     575<indexterm zone="ch-system-coreutils pwd"><primary sortas="b-pwd">pwd</primary></indexterm>
     576</listitem>
     577</varlistentry>
     578
     579<varlistentry id="readlink">
     580<term><command>readlink</command></term>
     581<listitem>
     582<para>Reports the value of the given symbolic link</para>
     583<indexterm zone="ch-system-coreutils readlink"><primary sortas="b-readlink">readlink</primary></indexterm>
     584</listitem>
     585</varlistentry>
     586
     587<varlistentry id="rm">
     588<term><command>rm</command></term>
     589<listitem>
     590<para>Removes files or directories</para>
     591<indexterm zone="ch-system-coreutils rm"><primary sortas="b-rm">rm</primary></indexterm>
     592</listitem>
     593</varlistentry>
     594
     595<varlistentry id="rmdir">
     596<term><command>rmdir</command></term>
     597<listitem>
     598<para>Removes directories if they are empty</para>
     599<indexterm zone="ch-system-coreutils rmdir"><primary sortas="b-rmdir">rmdir</primary></indexterm>
     600</listitem>
     601</varlistentry>
     602
     603<varlistentry id="seq">
     604<term><command>seq</command></term>
     605<listitem>
     606<para>Prints a sequence of numbers within a given range and with a
     607given increment</para>
     608<indexterm zone="ch-system-coreutils seq"><primary sortas="b-seq">seq</primary></indexterm>
     609</listitem>
     610</varlistentry>
     611
     612<varlistentry id="sha1sum">
     613<term><command>sha1sum</command></term>
     614<listitem>
     615<para>Prints or checks 160-bit Secure Hash Algorithm 1 (SHA1) checksums</para>
     616<indexterm zone="ch-system-coreutils sha1sum"><primary sortas="b-sha1sum">sha1sum</primary></indexterm>
     617</listitem>
     618</varlistentry>
     619
     620<varlistentry id="shred">
     621<term><command>shred</command></term>
     622<listitem>
     623<para>Overwrites the given files repeatedly with complex patterns,
     624making it difficult to recover the data</para>
     625<indexterm zone="ch-system-coreutils shred"><primary sortas="b-shred">shred</primary></indexterm>
     626</listitem>
     627</varlistentry>
     628
     629<varlistentry id="sleep">
     630<term><command>sleep</command></term>
     631<listitem>
     632<para>Pauses for the given amount of time</para>
     633<indexterm zone="ch-system-coreutils sleep"><primary sortas="b-sleep">sleep</primary></indexterm>
     634</listitem>
     635</varlistentry>
     636
     637<varlistentry id="sort">
     638<term><command>sort</command></term>
     639<listitem>
     640<para>Sorts the lines from the given files</para>
     641<indexterm zone="ch-system-coreutils sort"><primary sortas="b-sort">sort</primary></indexterm>
     642</listitem>
     643</varlistentry>
     644
     645<varlistentry id="split">
     646<term><command>split</command></term>
     647<listitem>
     648<para>Splits the given file into pieces, by size or by number of lines</para>
     649<indexterm zone="ch-system-coreutils split"><primary sortas="b-split">split</primary></indexterm>
     650</listitem>
     651</varlistentry>
     652
     653<varlistentry id="stat">
     654<term><command>stat</command></term>
     655<listitem>
     656<para>Displays file or filesystem status</para>
     657<indexterm zone="ch-system-coreutils stat"><primary sortas="b-stat">stat</primary></indexterm>
     658</listitem>
     659</varlistentry>
     660
     661<varlistentry id="stty">
     662<term><command>stty</command></term>
     663<listitem>
     664<para>Sets or reports terminal line settings</para>
     665<indexterm zone="ch-system-coreutils stty"><primary sortas="b-stty">stty</primary></indexterm>
     666</listitem>
     667</varlistentry>
     668
     669<varlistentry id="sum">
     670<term><command>sum</command></term>
     671<listitem>
     672<para>Prints checksum and block counts for each given file</para>
     673<indexterm zone="ch-system-coreutils sum"><primary sortas="b-sum">sum</primary></indexterm>
     674</listitem>
     675</varlistentry>
     676
     677<varlistentry id="sync">
     678<term><command>sync</command></term>
     679<listitem>
     680<para>Flushes file system buffers; it forces changed blocks to disk
     681and updates the super block</para>
     682<indexterm zone="ch-system-coreutils sync"><primary sortas="b-sync">sync</primary></indexterm>
     683</listitem>
     684</varlistentry>
     685
     686<varlistentry id="tac">
     687<term><command>tac</command></term>
     688<listitem>
     689<para>Concatenates the given files in reverse</para>
     690<indexterm zone="ch-system-coreutils tac"><primary sortas="b-tac">tac</primary></indexterm>
     691</listitem>
     692</varlistentry>
     693
     694<varlistentry id="tail">
     695<term><command>tail</command></term>
     696<listitem>
     697<para>Prints the last ten lines (or the given number of lines) of each
     698given file</para>
     699<indexterm zone="ch-system-coreutils tail"><primary sortas="b-tail">tail</primary></indexterm>
     700</listitem>
     701</varlistentry>
     702
     703<varlistentry id="tee">
     704<term><command>tee</command></term>
     705<listitem>
     706<para>Reads from standard input while writing both to standard output
     707and to the given files</para>
     708<indexterm zone="ch-system-coreutils tee"><primary sortas="b-tee">tee</primary></indexterm>
     709</listitem>
     710</varlistentry>
     711
     712<varlistentry id="test">
     713<term><command>test</command></term>
     714<listitem>
     715<para>Compares values and checks file types</para>
     716<indexterm zone="ch-system-coreutils test"><primary sortas="b-test">test</primary></indexterm>
     717</listitem>
     718</varlistentry>
     719
     720<varlistentry id="touch">
     721<term><command>touch</command></term>
     722<listitem>
     723<para>Changes file timestamps, setting the access and modification
     724times of the given files to the current time; files that do not exist
     725are created with zero length</para>
     726<indexterm zone="ch-system-coreutils touch"><primary sortas="b-touch">touch</primary></indexterm>
     727</listitem>
     728</varlistentry>
     729
     730<varlistentry id="tr">
     731<term><command>tr</command></term>
     732<listitem>
     733<para>Translates, squeezes, and deletes the given characters from
     734standard input</para>
     735<indexterm zone="ch-system-coreutils tr"><primary sortas="b-tr">tr</primary></indexterm>
     736</listitem>
     737</varlistentry>
     738
     739<varlistentry id="true">
     740<term><command>true</command></term>
     741<listitem>
     742<para>Does nothing, successfully; it always exits with a status code
     743indicating success</para>
     744<indexterm zone="ch-system-coreutils true"><primary sortas="b-true">true</primary></indexterm>
     745</listitem>
     746</varlistentry>
     747
     748<varlistentry id="tsort">
     749<term><command>tsort</command></term>
     750<listitem>
     751<para>Performs a topological sort; it writes a completely ordered list
     752according to the partial ordering in a given file</para>
     753<indexterm zone="ch-system-coreutils tsort"><primary sortas="b-tsort">tsort</primary></indexterm>
     754</listitem>
     755</varlistentry>
     756
     757<varlistentry id="tty">
     758<term><command>tty</command></term>
     759<listitem>
     760<para>Reports the file name of the terminal connected to standard
     761input</para>
     762<indexterm zone="ch-system-coreutils tty"><primary sortas="b-tty">tty</primary></indexterm>
     763</listitem>
     764</varlistentry>
     765
     766<varlistentry id="uname">
     767<term><command>uname</command></term>
     768<listitem>
     769<para>Reports system information</para>
     770<indexterm zone="ch-system-coreutils uname"><primary sortas="b-uname">uname</primary></indexterm>
     771</listitem>
     772</varlistentry>
     773
     774<varlistentry id="unexpand">
     775<term><command>unexpand</command></term>
     776<listitem>
     777<para>Converts spaces to tabs</para>
     778<indexterm zone="ch-system-coreutils unexpand"><primary sortas="b-unexpand">unexpand</primary></indexterm>
     779</listitem>
     780</varlistentry>
     781
     782<varlistentry id="uniq">
     783<term><command>uniq</command></term>
     784<listitem>
     785<para>Discards all but one of successive identical lines</para>
     786<indexterm zone="ch-system-coreutils unexpand"><primary sortas="b-unexpand">unexpand</primary></indexterm>
     787</listitem>
     788</varlistentry>
     789
     790<varlistentry id="unlink">
     791<term><command>unlink</command></term>
     792<listitem>
     793<para>Removes the given file</para>
     794<indexterm zone="ch-system-coreutils unlink"><primary sortas="b-unlink">unlink</primary></indexterm>
     795</listitem>
     796</varlistentry>
     797
     798<varlistentry id="users">
     799<term><command>users</command></term>
     800<listitem>
     801<para>Reports the names of the users currently logged on</para>
     802<indexterm zone="ch-system-coreutils users"><primary sortas="b-users">users</primary></indexterm>
     803</listitem>
     804</varlistentry>
     805
     806<varlistentry id="vdir">
     807<term><command>vdir</command></term>
     808<listitem>
     809<para>Is the same as <command>ls -l</command></para>
     810<indexterm zone="ch-system-coreutils vdir"><primary sortas="b-vdir">vdir</primary></indexterm>
     811</listitem>
     812</varlistentry>
     813
     814<varlistentry id="wc">
     815<term><command>wc</command></term>
     816<listitem>
     817<para>Reports the number of lines, words, and bytes for each given
     818file, as well as a total line when more than one file is given</para>
     819<indexterm zone="ch-system-coreutils wc"><primary sortas="b-wc">wc</primary></indexterm>
     820</listitem>
     821</varlistentry>
     822
     823<varlistentry id="who">
     824<term><command>who</command></term>
     825<listitem>
     826<para>Reports who is logged on</para>
     827<indexterm zone="ch-system-coreutils who"><primary sortas="b-who">who</primary></indexterm>
     828</listitem>
     829</varlistentry>
     830
     831<varlistentry id="whoami">
     832<term><command>whoami</command></term>
     833<listitem>
     834<para>Reports the user name associated with the current effective user ID</para>
     835<indexterm zone="ch-system-coreutils whoami"><primary sortas="b-whoami">whoami</primary></indexterm>
     836</listitem>
     837</varlistentry>
     838
     839<varlistentry id="yes">
     840<term><command>yes</command></term>
     841<listitem>
     842<para>Repeatedly outputs <quote>y</quote> or a given string until
     843killed</para>
     844<indexterm zone="ch-system-coreutils yes"><primary sortas="b-yes">yes</primary></indexterm>
     845</listitem>
     846</varlistentry>
     847</variablelist>
    82848
    83849</sect2>
    84850
    85851</sect1>
     852
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