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git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@6011 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689
851 lines
28 KiB
XML
851 lines
28 KiB
XML
<?xml version="1.0" encoding="ISO-8859-1"?>
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<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" [
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<!ENTITY % general-entities SYSTEM "../general.ent">
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<!ENTITY % patches-entities SYSTEM "../patches.ent">
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%general-entities;
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%patches-entities;
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]>
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<sect1 id="ch-system-coreutils" role="wrap">
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<title>Coreutils-&coreutils-version;</title>
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<?dbhtml filename="coreutils.html"?>
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<indexterm zone="ch-system-coreutils"><primary sortas="a-Coreutils">Coreutils</primary></indexterm>
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<sect2 role="package"><title/>
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<para>The Coreutils package contains utilities for showing and setting the
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basic system characteristics.</para>
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<segmentedlist>
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<segtitle>&buildtime;</segtitle>
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<segtitle>&diskspace;</segtitle>
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<seglistitem><seg>0.9 SBU</seg><seg>52.8 MB</seg></seglistitem>
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</segmentedlist>
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<segmentedlist>
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<segtitle>&dependencies;</segtitle>
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<seglistitem><seg>Bash, Binutils, Coreutils, Diffutils, GCC,
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Gettext, Glibc, Grep, Make, Perl, and Sed</seg></seglistitem>
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</segmentedlist>
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</sect2>
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<sect2 role="installation">
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<title>Installation of Coreutils</title>
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<para>A known issue with the <command>uname</command> program from
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this package is that the <parameter>-p</parameter> switch always
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returns <computeroutput>unknown</computeroutput>. The following patch
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fixes this behavior for Intel architectures:</para>
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<screen><userinput>patch -Np1 -i ../&coreutils-uname-patch;</userinput></screen>
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<para>Prevent Coreutils from installing binaries that will be later be
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installed by other packages:</para>
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<screen><userinput>patch -Np1 -i ../&coreutils-suppress-patch;</userinput></screen>
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<para>Now prepare Coreutils for compilation:</para>
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<screen><userinput>DEFAULT_POSIX2_VERSION=199209 ./configure --prefix=/usr</userinput></screen>
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<para>Compile the package:</para>
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<screen><userinput>make</userinput></screen>
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<para>The test suite of Coreutils makes several invalid assumptions about the
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presence of system users and groups. Therefore, additional items need to be set
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up before running the tests. Skip down to <quote>Install the package</quote> if
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not running the test suite.</para>
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<para>Create two dummy groups and a dummy user:</para>
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<screen><userinput>echo "dummy1:x:1000:" >> /etc/group
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echo "dummy2:x:1001:dummy" >> /etc/group
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echo "dummy:x:1000:1000:::/bin/bash" >> /etc/passwd</userinput></screen>
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<para>Now the test suite is ready to be run. First, run the tests that
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are meant to be run as user <emphasis>root</emphasis>:</para>
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<screen><userinput>make NON_ROOT_USERNAME=dummy check-root</userinput></screen>
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<para>Then run the remainder of the tests as the
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<emphasis>dummy</emphasis> user:</para>
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<screen><userinput>src/su dummy -c "make RUN_EXPENSIVE_TESTS=yes check"</userinput></screen>
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<para>When testing is complete, remove the dummy user and
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groups:</para>
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<screen><userinput>sed -i '/dummy/d' /etc/passwd /etc/group</userinput></screen>
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<para>Install the package:</para>
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<screen><userinput>make install</userinput></screen>
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<para>Move programs to the proper locations:</para>
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<screen><userinput>mv /usr/bin/{[,basename,cat,chgrp,chmod,chown,cp,dd,df} /bin
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mv /usr/bin/{date,echo,false,head,hostname,install,ln} /bin
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mv /usr/bin/{ls,mkdir,mknod,mv,pwd,rm,rmdir,sync} /bin
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mv /usr/bin/{sleep,stty,test,touch,true,uname} /bin
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mv /usr/bin/chroot /usr/sbin</userinput></screen>
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<para>Finally, create a symlink to be FHS-compliant:</para>
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<screen><userinput>ln -s ../../bin/install /usr/bin</userinput></screen>
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</sect2>
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<sect2 id="contents-coreutils" role="content"><title>Contents of Coreutils</title>
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<segmentedlist>
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<segtitle>Installed programs</segtitle>
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<seglistitem><seg>basename, cat, chgrp, chmod, chown, chroot, cksum,
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comm, cp, csplit, cut, date, dd, df, dir, dircolors, dirname, du,
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echo, env, expand, expr, factor, false, fmt, fold, groups, head,
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hostid, hostname, id, install, join, link, ln, logname, ls, md5sum,
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mkdir, mkfifo, mknod, mv, nice, nl, nohup, od, paste, pathchk, pinky,
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pr, printenv, printf, ptx, pwd, readlink, rm, rmdir, seq, sha1sum,
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shred, sleep, sort, split, stat, stty, sum, sync, tac, tail, tee,
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test, touch, tr, true, tsort, tty, uname, unexpand, uniq, unlink,
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users, vdir, wc, who, whoami, and yes</seg></seglistitem>
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</segmentedlist>
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<variablelist><bridgehead renderas="sect3">Short Descriptions</bridgehead>
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<?dbfo list-presentation="list"?>
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<?dbhtml list-presentation="table"?>
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<varlistentry id="basename">
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<term><command>basename</command></term>
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<listitem>
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<para>Strips any path and a given suffix from a file name</para>
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<indexterm zone="ch-system-coreutils basename"><primary sortas="b-basename">basename</primary></indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="cat">
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<term><command>cat</command></term>
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<listitem>
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<para>Concatenates files to standard output</para>
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<indexterm zone="ch-system-coreutils cat"><primary sortas="b-cat">cat</primary></indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="chgrp">
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<term><command>chgrp</command></term>
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<listitem>
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<para>Changes the group ownership of files and directories</para>
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<indexterm zone="ch-system-coreutils chgrp"><primary sortas="b-chgrp">chgrp</primary></indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="chmod">
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<term><command>chmod</command></term>
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<listitem>
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<para>Changes the permissions of each file to the given mode; the mode
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can be either a symbolic representation of the changes to make or an
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octal number representing the new permissions</para>
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<indexterm zone="ch-system-coreutils chmod"><primary sortas="b-chmod">chmod</primary></indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="chown">
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<term><command>chown</command></term>
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<listitem>
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<para>Changes the user and/or group ownership of files and directories</para>
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<indexterm zone="ch-system-coreutils chown"><primary sortas="b-chown">chown</primary></indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="chroot">
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<term><command>chroot</command></term>
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<listitem>
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<para>Runs a command with the specified directory as the
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<filename class="directory">/</filename> directory</para>
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<indexterm zone="ch-system-coreutils chroot"><primary sortas="b-chroot">chroot</primary></indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="cksum">
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<term><command>cksum</command></term>
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<listitem>
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<para>Prints the Cyclic Redundancy Check (CRC) checksum and the byte
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counts of each specified file</para>
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<indexterm zone="ch-system-coreutils cksum"><primary sortas="b-cksum">cksum</primary></indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="comm">
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<term><command>comm</command></term>
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<listitem>
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<para>Compares two sorted files, outputting in three columns the lines
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that are unique and the lines that are common</para>
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<indexterm zone="ch-system-coreutils comm"><primary sortas="b-comm">comm</primary></indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="cp">
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<term><command>cp</command></term>
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<listitem>
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<para>Copies files</para>
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<indexterm zone="ch-system-coreutils cp"><primary sortas="b-cp">cp</primary></indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="csplit">
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<term><command>csplit</command></term>
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<listitem>
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<para>Splits a given file into several new files, separating them
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according to given patterns or line numbers and outputting the byte
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count of each new file</para>
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<indexterm zone="ch-system-coreutils csplit"><primary sortas="b-csplit">csplit</primary></indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="cut">
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<term><command>cut</command></term>
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<listitem>
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<para>Prints sections of lines, selecting the parts according to given
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fields or positions</para>
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<indexterm zone="ch-system-coreutils cut"><primary sortas="b-cut">cut</primary></indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="date">
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<term><command>date</command></term>
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<listitem>
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<para>Displays the current time in the given format, or sets the
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system date</para>
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<indexterm zone="ch-system-coreutils date"><primary sortas="b-date">date</primary></indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="dd">
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<term><command>dd</command> </term>
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<listitem>
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<para>Copies a file using the given block size and count, while
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optionally performing conversions on it</para>
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<indexterm zone="ch-system-coreutils dd"><primary sortas="b-dd">dd</primary></indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="df">
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<term><command>df</command></term>
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<listitem>
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<para>Reports the amount of disk space available (and used) on all
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mounted file systems, or only on the file systems holding the selected
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files</para>
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<indexterm zone="ch-system-coreutils df"><primary sortas="b-df">df</primary></indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="dir">
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<term><command>dir</command></term>
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<listitem>
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<para>Lists the contents of each given directory (the same as
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the <command>ls</command> command)</para>
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<indexterm zone="ch-system-coreutils dir"><primary sortas="b-dir">dir</primary></indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="dircolors">
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<term><command>dircolors</command></term>
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<listitem>
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<para>Outputs commands to set the <envar>LS_COLOR</envar>
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environment variable to change the color scheme used by
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<command>ls</command></para>
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<indexterm zone="ch-system-coreutils dircolors"><primary sortas="b-dircolors">dircolors</primary></indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="dirname">
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<term><command>dirname</command></term>
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<listitem>
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<para>Strips the non-directory suffix from a file name</para>
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<indexterm zone="ch-system-coreutils dirname"><primary sortas="b-dirname">dirname</primary></indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="du">
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<term><command>du</command></term>
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<listitem>
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<para>Reports the amount of disk space used by the current directory,
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by each of the given directories (including all subdirectories) or by
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each of the given files</para>
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<indexterm zone="ch-system-coreutils du"><primary sortas="b-du">du</primary></indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="echo">
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<term><command>echo</command></term>
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<listitem>
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<para>Displays the given strings</para>
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<indexterm zone="ch-system-coreutils echo"><primary sortas="b-echo">echo</primary></indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="env">
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<term><command>env</command></term>
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<listitem>
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<para>Runs a command in a modified environment</para>
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<indexterm zone="ch-system-coreutils env"><primary sortas="b-env">env</primary></indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="expand">
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<term><command>expand</command></term>
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<listitem>
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<para>Converts tabs to spaces</para>
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<indexterm zone="ch-system-coreutils expand"><primary sortas="b-expand">expand</primary></indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="expr">
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<term><command>expr</command></term>
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<listitem>
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<para>Evaluates expressions</para>
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<indexterm zone="ch-system-coreutils expr"><primary sortas="b-expr">expr</primary></indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="factor">
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<term><command>factor</command></term>
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<listitem>
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<para>Prints the prime factors of all specified integer numbers</para>
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<indexterm zone="ch-system-coreutils factor"><primary sortas="b-factor">factor</primary></indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="false">
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<term><command>false</command></term>
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<listitem>
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<para>Does nothing, unsuccessfully; it always exits with a status code
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indicating failure</para>
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<indexterm zone="ch-system-coreutils false"><primary sortas="b-false">false</primary></indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="fmt">
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<term><command>fmt</command></term>
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<listitem>
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<para>Reformats the paragraphs in the given files</para>
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<indexterm zone="ch-system-coreutils fmt"><primary sortas="b-fmt">fmt</primary></indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="fold">
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<term><command>fold</command></term>
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<listitem>
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<para>Wraps the lines in the given files</para>
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<indexterm zone="ch-system-coreutils fold"><primary sortas="b-fold">fold</primary></indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="groups-coreutils">
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<term><command>groups</command></term>
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<listitem>
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<para>Reports a user's group memberships</para>
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<indexterm zone="ch-system-coreutils groups-coreutils"><primary sortas="b-groups-coreutils">groups</primary></indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="head">
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<term><command>head</command></term>
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<listitem>
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<para>Prints the first ten lines (or the given number of lines) of each given file</para>
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<indexterm zone="ch-system-coreutils head"><primary sortas="b-head">head</primary></indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="hostid">
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<term><command>hostid</command></term>
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<listitem>
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<para>Reports the numeric identifier (in hexadecimal) of the host</para>
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<indexterm zone="ch-system-coreutils hostid"><primary sortas="b-hostid">hostid</primary></indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="hostname">
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<term><command>hostname</command></term>
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<listitem>
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<para>Reports or sets the name of the host</para>
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<indexterm zone="ch-system-coreutils hostname"><primary sortas="b-hostname">hostname</primary></indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="id">
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<term><command>id</command></term>
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<listitem>
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<para>Reports the effective user ID, group ID, and
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group memberships of the current user or specified user</para>
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<indexterm zone="ch-system-coreutils id"><primary sortas="b-id">id</primary></indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="install">
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<term><command>install</command> </term>
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<listitem>
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<para>Copies files while setting their
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permission modes and, if possible, their owner and group</para>
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<indexterm zone="ch-system-coreutils install"><primary sortas="b-install">install</primary></indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="join">
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<term><command>join</command></term>
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<listitem>
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<para>Joins the lines that have identical join fields from two
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separate files</para>
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<indexterm zone="ch-system-coreutils join"><primary sortas="b-join">join</primary></indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="link">
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<term><command>link</command></term>
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<listitem>
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<para>Creates a hard link with the given name to a file</para>
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<indexterm zone="ch-system-coreutils link"><primary sortas="b-link">link</primary></indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="ln">
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<term><command>ln</command></term>
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<listitem>
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<para>Makes hard links or soft (symbolic) links between files</para>
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<indexterm zone="ch-system-coreutils ln"><primary sortas="b-ln">ln</primary></indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="logname">
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<term><command>logname</command></term>
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<listitem>
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<para>Reports the current user's login name</para>
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<indexterm zone="ch-system-coreutils logname"><primary sortas="b-logname">logname</primary></indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="ls">
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<term><command>ls</command></term>
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<listitem>
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<para>Lists the contents of each given directory</para>
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<indexterm zone="ch-system-coreutils ls"><primary sortas="b-ls">ls</primary></indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="md5sum">
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<term><command>md5sum</command></term>
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<listitem>
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<para>Reports or checks Message Digest 5 (MD5) checksums</para>
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<indexterm zone="ch-system-coreutils md5sum"><primary sortas="b-md5sum">md5sum</primary></indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="mkdir">
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<term><command>mkdir</command></term>
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<listitem>
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<para>Creates directories with the given names</para>
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<indexterm zone="ch-system-coreutils mkdir"><primary sortas="b-mkdir">mkdir</primary></indexterm>
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</listitem>
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</varlistentry>
|
|
|
|
<varlistentry id="mkfifo">
|
|
<term><command>mkfifo</command></term>
|
|
<listitem>
|
|
<para>Creates First-In, First-Outs (FIFOs), a <quote>named
|
|
pipe</quote> in UNIX parlance, with the given names</para>
|
|
<indexterm zone="ch-system-coreutils mkfifo"><primary sortas="b-mkfifo">mkfifo</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="mknod">
|
|
<term><command>mknod</command></term>
|
|
<listitem>
|
|
<para>Creates device nodes with the given names; a device node is a
|
|
character special file, a block special file, or a FIFO</para>
|
|
<indexterm zone="ch-system-coreutils mknod"><primary sortas="b-mknod">mknod</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="mv">
|
|
<term><command>mv</command></term>
|
|
<listitem>
|
|
<para>Moves or renames files or directories</para>
|
|
<indexterm zone="ch-system-coreutils mv"><primary sortas="b-mv">mv</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="nice">
|
|
<term><command>nice</command></term>
|
|
<listitem>
|
|
<para>Runs a program with modified scheduling priority</para>
|
|
<indexterm zone="ch-system-coreutils nice"><primary sortas="b-nice">nice</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="nl">
|
|
<term><command>nl</command></term>
|
|
<listitem>
|
|
<para>Numbers the lines from the given files</para>
|
|
<indexterm zone="ch-system-coreutils nl"><primary sortas="b-nl">nl</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="nohup">
|
|
<term><command>nohup</command></term>
|
|
<listitem>
|
|
<para>Runs a command immune to hangups, with its output redirected to
|
|
a log file</para>
|
|
<indexterm zone="ch-system-coreutils nohup"><primary sortas="b-nohup">nohup</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="od">
|
|
<term><command>od</command></term>
|
|
<listitem>
|
|
<para>Dumps files in octal and other formats</para>
|
|
<indexterm zone="ch-system-coreutils od"><primary sortas="b-od">od</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="paste">
|
|
<term><command>paste</command></term>
|
|
<listitem>
|
|
<para>Merges the given files, joining sequentially corresponding lines
|
|
side by side, separated by tab characters</para>
|
|
<indexterm zone="ch-system-coreutils paste"><primary sortas="b-paste">paste</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="pathchk">
|
|
<term><command>pathchk</command></term>
|
|
<listitem>
|
|
<para>Checks if file names are valid or portable</para>
|
|
<indexterm zone="ch-system-coreutils pathchk"><primary sortas="b-pathchk">pathchk</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="pinky">
|
|
<term><command>pinky</command></term>
|
|
<listitem>
|
|
<para>Is a lightweight finger client; it reports some information about the given users</para>
|
|
<indexterm zone="ch-system-coreutils pinky"><primary sortas="b-pinky">pinky</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="pr">
|
|
<term><command>pr</command></term>
|
|
<listitem>
|
|
<para>Paginates and columnates files for printing</para>
|
|
<indexterm zone="ch-system-coreutils pr"><primary sortas="b-pr">pr</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="printenv">
|
|
<term><command>printenv</command></term>
|
|
<listitem>
|
|
<para>Prints the environment</para>
|
|
<indexterm zone="ch-system-coreutils printenv"><primary sortas="b-printenv">printenv</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="printf">
|
|
<term><command>printf</command></term>
|
|
<listitem>
|
|
<para>Prints the given arguments according to the given format, much
|
|
like the C printf function</para>
|
|
<indexterm zone="ch-system-coreutils printf"><primary sortas="b-printf">printf</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="ptx">
|
|
<term><command>ptx</command></term>
|
|
<listitem>
|
|
<para>Produces a permuted index from the contents of the given files,
|
|
with each keyword in its context</para>
|
|
<indexterm zone="ch-system-coreutils ptx"><primary sortas="b-ptx">ptx</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="pwd">
|
|
<term><command>pwd</command></term>
|
|
<listitem>
|
|
<para>Reports the name of the current working directory</para>
|
|
<indexterm zone="ch-system-coreutils pwd"><primary sortas="b-pwd">pwd</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="readlink">
|
|
<term><command>readlink</command></term>
|
|
<listitem>
|
|
<para>Reports the value of the given symbolic link</para>
|
|
<indexterm zone="ch-system-coreutils readlink"><primary sortas="b-readlink">readlink</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="rm">
|
|
<term><command>rm</command></term>
|
|
<listitem>
|
|
<para>Removes files or directories</para>
|
|
<indexterm zone="ch-system-coreutils rm"><primary sortas="b-rm">rm</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="rmdir">
|
|
<term><command>rmdir</command></term>
|
|
<listitem>
|
|
<para>Removes directories if they are empty</para>
|
|
<indexterm zone="ch-system-coreutils rmdir"><primary sortas="b-rmdir">rmdir</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="seq">
|
|
<term><command>seq</command></term>
|
|
<listitem>
|
|
<para>Prints a sequence of numbers within a given range and with a
|
|
given increment</para>
|
|
<indexterm zone="ch-system-coreutils seq"><primary sortas="b-seq">seq</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="sha1sum">
|
|
<term><command>sha1sum</command></term>
|
|
<listitem>
|
|
<para>Prints or checks 160-bit Secure Hash Algorithm 1 (SHA1) checksums</para>
|
|
<indexterm zone="ch-system-coreutils sha1sum"><primary sortas="b-sha1sum">sha1sum</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="shred">
|
|
<term><command>shred</command></term>
|
|
<listitem>
|
|
<para>Overwrites the given files repeatedly with complex patterns,
|
|
making it difficult to recover the data</para>
|
|
<indexterm zone="ch-system-coreutils shred"><primary sortas="b-shred">shred</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="sleep">
|
|
<term><command>sleep</command></term>
|
|
<listitem>
|
|
<para>Pauses for the given amount of time</para>
|
|
<indexterm zone="ch-system-coreutils sleep"><primary sortas="b-sleep">sleep</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="sort">
|
|
<term><command>sort</command></term>
|
|
<listitem>
|
|
<para>Sorts the lines from the given files</para>
|
|
<indexterm zone="ch-system-coreutils sort"><primary sortas="b-sort">sort</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="split">
|
|
<term><command>split</command></term>
|
|
<listitem>
|
|
<para>Splits the given file into pieces, by size or by number of lines</para>
|
|
<indexterm zone="ch-system-coreutils split"><primary sortas="b-split">split</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="stat">
|
|
<term><command>stat</command></term>
|
|
<listitem>
|
|
<para>Displays file or filesystem status</para>
|
|
<indexterm zone="ch-system-coreutils stat"><primary sortas="b-stat">stat</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="stty">
|
|
<term><command>stty</command></term>
|
|
<listitem>
|
|
<para>Sets or reports terminal line settings</para>
|
|
<indexterm zone="ch-system-coreutils stty"><primary sortas="b-stty">stty</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="sum">
|
|
<term><command>sum</command></term>
|
|
<listitem>
|
|
<para>Prints checksum and block counts for each given file</para>
|
|
<indexterm zone="ch-system-coreutils sum"><primary sortas="b-sum">sum</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="sync">
|
|
<term><command>sync</command></term>
|
|
<listitem>
|
|
<para>Flushes file system buffers; it forces changed blocks to disk
|
|
and updates the super block</para>
|
|
<indexterm zone="ch-system-coreutils sync"><primary sortas="b-sync">sync</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="tac">
|
|
<term><command>tac</command></term>
|
|
<listitem>
|
|
<para>Concatenates the given files in reverse</para>
|
|
<indexterm zone="ch-system-coreutils tac"><primary sortas="b-tac">tac</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="tail">
|
|
<term><command>tail</command></term>
|
|
<listitem>
|
|
<para>Prints the last ten lines (or the given number of lines) of each
|
|
given file</para>
|
|
<indexterm zone="ch-system-coreutils tail"><primary sortas="b-tail">tail</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="tee">
|
|
<term><command>tee</command></term>
|
|
<listitem>
|
|
<para>Reads from standard input while writing both to standard output
|
|
and to the given files</para>
|
|
<indexterm zone="ch-system-coreutils tee"><primary sortas="b-tee">tee</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="test">
|
|
<term><command>test</command></term>
|
|
<listitem>
|
|
<para>Compares values and checks file types</para>
|
|
<indexterm zone="ch-system-coreutils test"><primary sortas="b-test">test</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="touch">
|
|
<term><command>touch</command></term>
|
|
<listitem>
|
|
<para>Changes file timestamps, setting the access and modification
|
|
times of the given files to the current time; files that do not exist
|
|
are created with zero length</para>
|
|
<indexterm zone="ch-system-coreutils touch"><primary sortas="b-touch">touch</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="tr">
|
|
<term><command>tr</command></term>
|
|
<listitem>
|
|
<para>Translates, squeezes, and deletes the given characters from
|
|
standard input</para>
|
|
<indexterm zone="ch-system-coreutils tr"><primary sortas="b-tr">tr</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="true">
|
|
<term><command>true</command></term>
|
|
<listitem>
|
|
<para>Does nothing, successfully; it always exits with a status code
|
|
indicating success</para>
|
|
<indexterm zone="ch-system-coreutils true"><primary sortas="b-true">true</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="tsort">
|
|
<term><command>tsort</command></term>
|
|
<listitem>
|
|
<para>Performs a topological sort; it writes a completely ordered list
|
|
according to the partial ordering in a given file</para>
|
|
<indexterm zone="ch-system-coreutils tsort"><primary sortas="b-tsort">tsort</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="tty">
|
|
<term><command>tty</command></term>
|
|
<listitem>
|
|
<para>Reports the file name of the terminal connected to standard
|
|
input</para>
|
|
<indexterm zone="ch-system-coreutils tty"><primary sortas="b-tty">tty</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="uname">
|
|
<term><command>uname</command></term>
|
|
<listitem>
|
|
<para>Reports system information</para>
|
|
<indexterm zone="ch-system-coreutils uname"><primary sortas="b-uname">uname</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="unexpand">
|
|
<term><command>unexpand</command></term>
|
|
<listitem>
|
|
<para>Converts spaces to tabs</para>
|
|
<indexterm zone="ch-system-coreutils unexpand"><primary sortas="b-unexpand">unexpand</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="uniq">
|
|
<term><command>uniq</command></term>
|
|
<listitem>
|
|
<para>Discards all but one of successive identical lines</para>
|
|
<indexterm zone="ch-system-coreutils uniq"><primary sortas="b-uniq">uniq</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="unlink">
|
|
<term><command>unlink</command></term>
|
|
<listitem>
|
|
<para>Removes the given file</para>
|
|
<indexterm zone="ch-system-coreutils unlink"><primary sortas="b-unlink">unlink</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="users">
|
|
<term><command>users</command></term>
|
|
<listitem>
|
|
<para>Reports the names of the users currently logged on</para>
|
|
<indexterm zone="ch-system-coreutils users"><primary sortas="b-users">users</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="vdir">
|
|
<term><command>vdir</command></term>
|
|
<listitem>
|
|
<para>Is the same as <command>ls -l</command></para>
|
|
<indexterm zone="ch-system-coreutils vdir"><primary sortas="b-vdir">vdir</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="wc">
|
|
<term><command>wc</command></term>
|
|
<listitem>
|
|
<para>Reports the number of lines, words, and bytes for each given
|
|
file, as well as a total line when more than one file is given</para>
|
|
<indexterm zone="ch-system-coreutils wc"><primary sortas="b-wc">wc</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="who">
|
|
<term><command>who</command></term>
|
|
<listitem>
|
|
<para>Reports who is logged on</para>
|
|
<indexterm zone="ch-system-coreutils who"><primary sortas="b-who">who</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="whoami">
|
|
<term><command>whoami</command></term>
|
|
<listitem>
|
|
<para>Reports the user name associated with the current effective user ID</para>
|
|
<indexterm zone="ch-system-coreutils whoami"><primary sortas="b-whoami">whoami</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="yes">
|
|
<term><command>yes</command></term>
|
|
<listitem>
|
|
<para>Repeatedly outputs <quote>y</quote> or a given string until
|
|
killed</para>
|
|
<indexterm zone="ch-system-coreutils yes"><primary sortas="b-yes">yes</primary></indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
|
|
</sect2>
|
|
|
|
</sect1>
|
|
|