| 1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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| 2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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| 3 | "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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| 4 | <!ENTITY % general-entities SYSTEM "../../general.ent">
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| 5 | %general-entities;
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| 6 | ]>
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| 7 |
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| 8 | <sect1 id="ch-system-util-linux" role="wrap">
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| 9 | <?dbhtml filename="util-linux.html"?>
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| 10 |
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| 11 | <title>Util-linux-&util-linux-version;</title>
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| 12 |
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| 13 | <indexterm zone="ch-system-util-linux">
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| 14 | <primary sortas="a-Util-linux">Util-linux</primary>
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| 15 | </indexterm>
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| 16 |
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| 17 | <sect2 role="package">
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| 18 | <title/>
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| 19 |
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| 20 | <para>The Util-linux package contains miscellaneous utility programs.
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| 21 | Among them are utilities for handling file systems, consoles, partitions,
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| 22 | and messages.</para>
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| 23 |
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| 24 | </sect2>
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| 25 |
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| 26 | <sect2 id="fhs-util-linux" role="installation">
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| 27 | <title>FHS compliance notes</title>
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| 28 |
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| 29 | <para>The FHS recommends using the <filename
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| 30 | class="directory">/var/lib/hwclock</filename> directory instead of the
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| 31 | usual <filename class="directory">/etc</filename> directory as the
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| 32 | location for the <filename>adjtime</filename> file. To make the
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| 33 | <command>hwclock</command> program FHS-compliant, run the following:</para>
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| 34 |
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| 35 | <screen><userinput>sed -i -e 's@etc/adjtime@var/lib/hwclock/adjtime@g' \
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| 36 | $(grep -rl '/etc/adjtime' .)
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| 37 | mkdir -pv /var/lib/hwclock</userinput></screen>
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| 38 |
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| 39 | </sect2>
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| 40 |
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| 41 | <sect2 role="installation">
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| 42 | <title>Installation of Util-linux</title>
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| 43 |
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| 44 | <note os="n">
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| 45 | <para><command>findmnt</command>, and <command>lsblk</command> can
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| 46 | utilize <filename class="libraryfile">libudev</filename> for WWN and serial
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| 47 | number information. If this is desired, rebuild Util-linux after
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| 48 | <xref linkend="ch-system-systemd"/></para>
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| 49 | </note>
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| 50 |
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| 51 | <para os="a">Prepare Util-linux for compilation:</para>
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| 52 |
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| 53 | <screen os="b"><userinput>./configure --enable-write</userinput></screen>
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| 54 |
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| 55 | <variablelist os="c">
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| 56 | <title>The meaning of the configure options:</title>
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| 57 |
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| 58 | <varlistentry>
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| 59 | <term><parameter>--enable-write</parameter></term>
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| 60 | <listitem>
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| 61 | <para>This option allows the <command>write</command> program to be
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| 62 | installed.</para>
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| 63 | </listitem>
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| 64 | </varlistentry>
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| 65 |
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| 66 | </variablelist>
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| 67 |
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| 68 | <para os="d">Compile the package:</para>
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| 69 |
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| 70 | <screen os="e"><userinput>make</userinput></screen>
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| 71 |
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| 72 | <para os="f">To test the results, issue:</para>
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| 73 |
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| 74 | <screen os="f2"><userinput remap="test">chown -Rv nobody . &&
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| 75 | su nobody -s /bin/bash -c "PATH=$PATH make -k check"</userinput></screen>
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| 76 |
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| 77 | <para os="g">Install the package:</para>
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| 78 |
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| 79 | <screen os="h"><userinput>make install</userinput></screen>
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| 80 |
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| 81 | </sect2>
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| 82 |
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| 83 | <sect2 id="contents-util-linux" role="content">
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| 84 | <title>Contents of Util-linux</title>
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| 85 |
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| 86 | <segmentedlist>
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| 87 | <segtitle>Installed programs</segtitle>
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| 88 | <segtitle>Installed libraries</segtitle>
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| 89 | <segtitle>Installed directories</segtitle>
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| 90 |
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| 91 | <seglistitem>
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| 92 | <seg>addpart, agetty, blkdiscard, blkid, blockdev, cal, cfdisk, chcpu,
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| 93 | chrt, col, colcrt, colrm, column, ctrlaltdel, cytune, delpart,
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| 94 | dmesg, eject, fallocate, fdformat, fdisk, findfs, findmnt, flock,
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| 95 | fsck, fsck.cramfs, fsck.minix, fsfreeze, fstrim, getopt, hexdump,
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| 96 | hwclock, ionice, ipcmk, ipcrm, ipcs, isosize, kill, last, lastb (link
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| 97 | to last), ldattach, logger, look, losetup, lsblk, lscpu, lslocks,
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| 98 | mcookie, mesg, mkfs, mkfs.bfs, mkfs.cramfs, mkfs.minix, mkswap, more,
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| 99 | mount, mountpoint, namei, nologin, nsenter, partx, pg, pivot_root, prlimit,
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| 100 | raw, readprofile, rename, renice, resizepart, rev, rtcwake, script,
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| 101 | scriptreplay, setarch, setsid, setterm, sfdisk, sulogin, swaplabel,
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| 102 | swapoff, swapon, switch_root, tailf, taskset, ul, umount, unshare,
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| 103 | utmpdump, uuidd, uuidgen, wall, wdctl, whereis, wipefs, and write</seg>
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| 104 | <seg>libblkid.[a,so], libmount.[a,so], and libuuid.[a,so]</seg>
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| 105 | <seg>/usr/include/blkid, /usr/include/libmount, /usr/include/uuid,
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| 106 | /usr/share/bash-completion, /usr/share/doc/util-linux/getopt,
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| 107 | /var/lib/hwclock</seg>
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| 108 | </seglistitem>
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| 109 | </segmentedlist>
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| 110 |
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| 111 | <variablelist>
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| 112 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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| 113 | <?dbfo list-presentation="list"?>
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| 114 | <?dbhtml list-presentation="table"?>
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| 115 |
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| 116 | <varlistentry id="addpart">
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| 117 | <term><command>addpart</command></term>
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| 118 | <listitem>
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| 119 | <para>Informs the kernel of a new partition</para>
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| 120 | <indexterm zone="ch-system-util-linux addpart">
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| 121 | <primary sortas="b-addpart">addpart</primary>
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| 122 | </indexterm>
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| 123 | </listitem>
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| 124 | </varlistentry>
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| 125 |
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| 126 | <varlistentry id="agetty">
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| 127 | <term><command>agetty</command></term>
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| 128 | <listitem>
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| 129 | <para>Opens a tty port, prompts for a login name,
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| 130 | and then invokes the <command>login</command> program</para>
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| 131 | <indexterm zone="ch-system-util-linux agetty">
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| 132 | <primary sortas="b-agetty">agetty</primary>
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| 133 | </indexterm>
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| 134 | </listitem>
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| 135 | </varlistentry>
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| 136 |
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| 137 | <varlistentry id="blkdiscard">
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| 138 | <term><command>blkdiscard</command></term>
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| 139 | <listitem>
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| 140 | <para>Discards sectors on a device</para>
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| 141 | <indexterm zone="ch-system-util-linux blkdiscard">
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| 142 | <primary sortas="b-blkdiscard">blkdiscard</primary>
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| 143 | </indexterm>
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| 144 | </listitem>
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| 145 | </varlistentry>
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| 146 |
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| 147 | <varlistentry id="blkid">
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| 148 | <term><command>blkid</command></term>
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| 149 | <listitem>
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| 150 | <para>A command line utility to locate and print block device
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| 151 | attributes</para>
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| 152 | <indexterm zone="ch-system-util-linux blkid">
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| 153 | <primary sortas="b-blkid">blkid</primary>
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| 154 | </indexterm>
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| 155 | </listitem>
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| 156 | </varlistentry>
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| 157 |
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| 158 | <varlistentry id="blockdev">
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| 159 | <term><command>blockdev</command></term>
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| 160 | <listitem>
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| 161 | <para>Allows users to call block device ioctls from the command
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| 162 | line</para>
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| 163 | <indexterm zone="ch-system-util-linux blockdev">
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| 164 | <primary sortas="b-blockdev">blockdev</primary>
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| 165 | </indexterm>
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| 166 | </listitem>
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| 167 | </varlistentry>
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| 168 |
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| 169 | <varlistentry id="cal">
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| 170 | <term><command>cal</command></term>
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| 171 | <listitem>
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| 172 | <para>Displays a simple calendar</para>
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| 173 | <indexterm zone="ch-system-util-linux cal">
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| 174 | <primary sortas="b-cal">cal</primary>
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| 175 | </indexterm>
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| 176 | </listitem>
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| 177 | </varlistentry>
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| 178 |
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| 179 | <varlistentry id="cfdisk">
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| 180 | <term><command>cfdisk</command></term>
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| 181 | <listitem>
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| 182 | <para>Manipulates the partition table of the given device</para>
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| 183 | <indexterm zone="ch-system-util-linux cfdisk">
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| 184 | <primary sortas="b-cfdisk">cfdisk</primary>
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| 185 | </indexterm>
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| 186 | </listitem>
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| 187 | </varlistentry>
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| 188 |
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| 189 | <varlistentry id="chcpu">
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| 190 | <term><command>chcpu</command></term>
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| 191 | <listitem>
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| 192 | <para>Utility to configure CPUs</para>
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| 193 | <indexterm zone="ch-system-util-linux chcpu">
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| 194 | <primary sortas="b-chcpu">chcpu</primary>
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| 195 | </indexterm>
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| 196 | </listitem>
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| 197 | </varlistentry>
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| 198 |
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| 199 | <varlistentry id="chrt">
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| 200 | <term><command>chrt</command></term>
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| 201 | <listitem>
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| 202 | <para>Manipulates real-time attributes of a process</para>
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| 203 | <indexterm zone="ch-system-util-linux chrt">
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| 204 | <primary sortas="b-chrt">chrt</primary>
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| 205 | </indexterm>
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| 206 | </listitem>
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| 207 | </varlistentry>
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| 208 |
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| 209 | <varlistentry id="col">
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| 210 | <term><command>col</command></term>
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| 211 | <listitem>
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| 212 | <para>Filters out reverse line feeds</para>
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| 213 | <indexterm zone="ch-system-util-linux col">
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| 214 | <primary sortas="b-col">col</primary>
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| 215 | </indexterm>
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| 216 | </listitem>
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| 217 | </varlistentry>
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| 218 |
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| 219 | <varlistentry id="colcrt">
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| 220 | <term><command>colcrt</command></term>
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| 221 | <listitem>
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| 222 | <para>Filters <command>nroff</command> output for terminals
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| 223 | that lack some capabilities, such as overstriking and half-lines</para>
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| 224 | <indexterm zone="ch-system-util-linux colcrt">
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| 225 | <primary sortas="b-colcrt">colcrt</primary>
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| 226 | </indexterm>
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| 227 | </listitem>
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| 228 | </varlistentry>
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| 229 |
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| 230 | <varlistentry id="colrm">
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| 231 | <term><command>colrm</command></term>
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| 232 | <listitem>
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| 233 | <para>Filters out the given columns</para>
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| 234 | <indexterm zone="ch-system-util-linux colrm">
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| 235 | <primary sortas="b-colrm">colrm</primary>
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| 236 | </indexterm>
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| 237 | </listitem>
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| 238 | </varlistentry>
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| 239 |
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| 240 | <varlistentry id="column">
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| 241 | <term><command>column</command></term>
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| 242 | <listitem>
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| 243 | <para>Formats a given file into multiple columns</para>
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| 244 | <indexterm zone="ch-system-util-linux column">
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| 245 | <primary sortas="b-column">column</primary>
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| 246 | </indexterm>
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| 247 | </listitem>
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| 248 | </varlistentry>
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| 249 |
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| 250 | <varlistentry id="ctrlaltdel">
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| 251 | <term><command>ctrlaltdel</command></term>
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| 252 | <listitem>
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| 253 | <para>Sets the function of the Ctrl+Alt+Del key combination to a
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| 254 | hard or a soft reset</para>
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| 255 | <indexterm zone="ch-system-util-linux ctrlaltdel">
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| 256 | <primary sortas="b-ctrlaltdel">ctrlaltdel</primary>
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| 257 | </indexterm>
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| 258 | </listitem>
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| 259 | </varlistentry>
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| 260 |
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| 261 | <varlistentry id="cytune">
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| 262 | <term><command>cytune</command></term>
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| 263 | <listitem>
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| 264 | <para>Tunes the parameters of the serial line drivers for
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| 265 | Cyclades cards</para>
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| 266 | <indexterm zone="ch-system-util-linux cytune">
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| 267 | <primary sortas="b-cytune">cytune</primary>
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| 268 | </indexterm>
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| 269 | </listitem>
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| 270 | </varlistentry>
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| 271 |
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| 272 | <varlistentry id="ddate">
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| 273 | <term><command>ddate</command></term>
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| 274 | <listitem>
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| 275 | <para>Gives the Discordian date or converts the given Gregorian date
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| 276 | to a Discordian one</para>
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| 277 | <indexterm zone="ch-system-util-linux ddate">
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| 278 | <primary sortas="b-ddate">ddate</primary>
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| 279 | </indexterm>
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| 280 | </listitem>
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| 281 | </varlistentry>
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| 282 |
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| 283 | <varlistentry id="delpart">
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| 284 | <term><command>delpart</command></term>
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| 285 | <listitem>
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| 286 | <para>Asks the kernel to remove a partition</para>
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| 287 | <indexterm zone="ch-system-util-linux delpart">
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| 288 | <primary sortas="b-delpart">delpart</primary>
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| 289 | </indexterm>
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| 290 | </listitem>
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| 291 | </varlistentry>
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| 292 |
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| 293 | <varlistentry id="dmesg">
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| 294 | <term><command>dmesg</command></term>
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| 295 | <listitem>
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| 296 | <para>Dumps the kernel boot messages</para>
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| 297 | <indexterm zone="ch-system-util-linux dmesg">
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| 298 | <primary sortas="b-dmesg">dmesg</primary>
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| 299 | </indexterm>
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| 300 | </listitem>
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| 301 | </varlistentry>
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| 302 |
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| 303 | <varlistentry id="eject">
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| 304 | <term><command>eject</command></term>
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| 305 | <listitem>
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| 306 | <para>Eject removable media</para>
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| 307 | <indexterm zone="ch-system-util-linux eject">
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| 308 | <primary sortas="b-dmesg">eject</primary>
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| 309 | </indexterm>
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| 310 | </listitem>
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| 311 | </varlistentry>
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| 312 |
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| 313 | <varlistentry id="fallocate">
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| 314 | <term><command>fallocate</command></term>
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| 315 | <listitem>
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| 316 | <para>Preallocates space to a file</para>
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| 317 | <indexterm zone="ch-system-util-linux fallocate">
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| 318 | <primary sortas="b-fallocate">fallocate</primary>
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| 319 | </indexterm>
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| 320 | </listitem>
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| 321 | </varlistentry>
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| 322 |
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| 323 | <varlistentry id="fdformat">
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| 324 | <term><command>fdformat</command></term>
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| 325 | <listitem>
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| 326 | <para>Low-level formats a floppy disk</para>
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| 327 | <indexterm zone="ch-system-util-linux fdformat">
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| 328 | <primary sortas="b-fdformat">fdformat</primary>
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| 329 | </indexterm>
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| 330 | </listitem>
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| 331 | </varlistentry>
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| 332 |
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| 333 | <varlistentry id="fdisk">
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| 334 | <term><command>fdisk</command></term>
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| 335 | <listitem>
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| 336 | <para>Manipulates the partition table of the given device</para>
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| 337 | <indexterm zone="ch-system-util-linux fdisk">
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| 338 | <primary sortas="b-fdisk">fdisk</primary>
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| 339 | </indexterm>
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| 340 | </listitem>
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| 341 | </varlistentry>
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| 342 |
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| 343 | <varlistentry id="findfs">
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| 344 | <term><command>findfs</command></term>
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| 345 | <listitem>
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| 346 | <para>Finds a file system by label or Universally Unique Identifier
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| 347 | (UUID)</para>
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| 348 | <indexterm zone="ch-system-util-linux findfs">
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| 349 | <primary sortas="b-findfs">findfs</primary>
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| 350 | </indexterm>
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| 351 | </listitem>
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| 352 | </varlistentry>
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| 353 |
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| 354 | <varlistentry id="findmnt">
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| 355 | <term><command>findmnt</command></term>
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| 356 | <listitem>
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| 357 | <para>Lists mounted filesystems or searches for a filesystem</para>
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| 358 | <indexterm zone="ch-system-util-linux findmnt">
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| 359 | <primary sortas="b-findmnt">findmnt</primary>
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| 360 | </indexterm>
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| 361 | </listitem>
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| 362 | </varlistentry>
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| 363 |
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| 364 | <varlistentry id="flock">
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| 365 | <term><command>flock</command></term>
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| 366 | <listitem>
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| 367 | <para>Acquires a file lock and then executes a command with the lock
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| 368 | held</para>
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| 369 | <indexterm zone="ch-system-util-linux flock">
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| 370 | <primary sortas="b-flock">flock</primary>
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| 371 | </indexterm>
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| 372 | </listitem>
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| 373 | </varlistentry>
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| 374 |
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| 375 | <varlistentry id="fsck">
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| 376 | <term><command>fsck</command></term>
|
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| 377 | <listitem>
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| 378 | <para>Is used to check, and optionally repair, file systems</para>
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| 379 | <indexterm zone="ch-system-util-linux fsck">
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| 380 | <primary sortas="b-fsck">fsck</primary>
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| 381 | </indexterm>
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| 382 | </listitem>
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| 383 | </varlistentry>
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| 384 |
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| 385 | <varlistentry id="fsck.cramfs">
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| 386 | <term><command>fsck.cramfs</command></term>
|
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| 387 | <listitem>
|
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| 388 | <para>Performs a consistency check on the Cramfs file system on the
|
|---|
| 389 | given device</para>
|
|---|
| 390 | <indexterm zone="ch-system-util-linux fsck.cramfs">
|
|---|
| 391 | <primary sortas="b-fsck.cramfs">fsck.cramfs</primary>
|
|---|
| 392 | </indexterm>
|
|---|
| 393 | </listitem>
|
|---|
| 394 | </varlistentry>
|
|---|
| 395 |
|
|---|
| 396 | <varlistentry id="fsck.minix">
|
|---|
| 397 | <term><command>fsck.minix</command></term>
|
|---|
| 398 | <listitem>
|
|---|
| 399 | <para>Performs a consistency check on the Minix file system on the
|
|---|
| 400 | given device</para>
|
|---|
| 401 | <indexterm zone="ch-system-util-linux fsck.minix">
|
|---|
| 402 | <primary sortas="b-fsck.minix">fsck.minix</primary>
|
|---|
| 403 | </indexterm>
|
|---|
| 404 | </listitem>
|
|---|
| 405 | </varlistentry>
|
|---|
| 406 |
|
|---|
| 407 | <varlistentry id="fsfreeze">
|
|---|
| 408 | <term><command>fsfreeze</command></term>
|
|---|
| 409 | <listitem>
|
|---|
| 410 | <para>Suspends and resumes access to a filesystem</para>
|
|---|
| 411 | <indexterm zone="ch-system-util-linux fsfreeze">
|
|---|
| 412 | <primary sortas="b-fsfreeze">fsfreeze</primary>
|
|---|
| 413 | </indexterm>
|
|---|
| 414 | </listitem>
|
|---|
| 415 | </varlistentry>
|
|---|
| 416 |
|
|---|
| 417 | <varlistentry id="fstrim">
|
|---|
| 418 | <term><command>fstrim</command></term>
|
|---|
| 419 | <listitem>
|
|---|
| 420 | <para>Discards unused blocks on a mounted filesystem</para>
|
|---|
| 421 | <indexterm zone="ch-system-util-linux fstrim">
|
|---|
| 422 | <primary sortas="b-fstrim">fstrim</primary>
|
|---|
| 423 | </indexterm>
|
|---|
| 424 | </listitem>
|
|---|
| 425 | </varlistentry>
|
|---|
| 426 |
|
|---|
| 427 | <varlistentry id="getopt">
|
|---|
| 428 | <term><command>getopt</command></term>
|
|---|
| 429 | <listitem>
|
|---|
| 430 | <para>Parses options in the given command line</para>
|
|---|
| 431 | <indexterm zone="ch-system-util-linux getopt">
|
|---|
| 432 | <primary sortas="b-getopt">getopt</primary>
|
|---|
| 433 | </indexterm>
|
|---|
| 434 | </listitem>
|
|---|
| 435 | </varlistentry>
|
|---|
| 436 |
|
|---|
| 437 | <varlistentry id="hexdump">
|
|---|
| 438 | <term><command>hexdump</command></term>
|
|---|
| 439 | <listitem>
|
|---|
| 440 | <para>Dumps the given file in hexadecimal or in another given
|
|---|
| 441 | format</para>
|
|---|
| 442 | <indexterm zone="ch-system-util-linux hexdump">
|
|---|
| 443 | <primary sortas="b-hexdump">hexdump</primary>
|
|---|
| 444 | </indexterm>
|
|---|
| 445 | </listitem>
|
|---|
| 446 | </varlistentry>
|
|---|
| 447 |
|
|---|
| 448 | <varlistentry id="hwclock">
|
|---|
| 449 | <term><command>hwclock</command></term>
|
|---|
| 450 | <listitem>
|
|---|
| 451 | <para>Reads or sets the system's hardware clock, also called
|
|---|
| 452 | the Real-Time Clock (RTC) or Basic Input-Output System (BIOS)
|
|---|
| 453 | clock</para>
|
|---|
| 454 | <indexterm zone="ch-system-util-linux hwclock">
|
|---|
| 455 | <primary sortas="b-hwclock">hwclock</primary>
|
|---|
| 456 | </indexterm>
|
|---|
| 457 | </listitem>
|
|---|
| 458 | </varlistentry>
|
|---|
| 459 |
|
|---|
| 460 | <varlistentry id="ionice">
|
|---|
| 461 | <term><command>ionice</command></term>
|
|---|
| 462 | <listitem>
|
|---|
| 463 | <para>Gives and sets program I/O scheduling class and priority</para>
|
|---|
| 464 | <indexterm zone="ch-system-util-linux ionice">
|
|---|
| 465 | <primary sortas="b-ionice">ionice</primary>
|
|---|
| 466 | </indexterm>
|
|---|
| 467 | </listitem>
|
|---|
| 468 | </varlistentry>
|
|---|
| 469 |
|
|---|
| 470 | <varlistentry id="ipcmk">
|
|---|
| 471 | <term><command>ipcmk</command></term>
|
|---|
| 472 | <listitem>
|
|---|
| 473 | <para>Creates various IPC resources</para>
|
|---|
| 474 | <indexterm zone="ch-system-util-linux ipcmk">
|
|---|
| 475 | <primary sortas="b-ipcmk">ipcmk</primary>
|
|---|
| 476 | </indexterm>
|
|---|
| 477 | </listitem>
|
|---|
| 478 | </varlistentry>
|
|---|
| 479 |
|
|---|
| 480 | <varlistentry id="ipcrm">
|
|---|
| 481 | <term><command>ipcrm</command></term>
|
|---|
| 482 | <listitem>
|
|---|
| 483 | <para>Removes the given Inter-Process Communication (IPC) resource</para>
|
|---|
| 484 | <indexterm zone="ch-system-util-linux ipcrm">
|
|---|
| 485 | <primary sortas="b-ipcrm">ipcrm</primary>
|
|---|
| 486 | </indexterm>
|
|---|
| 487 | </listitem>
|
|---|
| 488 | </varlistentry>
|
|---|
| 489 |
|
|---|
| 490 | <varlistentry id="ipcs">
|
|---|
| 491 | <term><command>ipcs</command></term>
|
|---|
| 492 | <listitem>
|
|---|
| 493 | <para>Provides IPC status information</para>
|
|---|
| 494 | <indexterm zone="ch-system-util-linux ipcs">
|
|---|
| 495 | <primary sortas="b-ipcs">ipcs</primary>
|
|---|
| 496 | </indexterm>
|
|---|
| 497 | </listitem>
|
|---|
| 498 | </varlistentry>
|
|---|
| 499 |
|
|---|
| 500 | <varlistentry id="isosize">
|
|---|
| 501 | <term><command>isosize</command></term>
|
|---|
| 502 | <listitem>
|
|---|
| 503 | <para>Reports the size of an iso9660 file system</para>
|
|---|
| 504 | <indexterm zone="ch-system-util-linux isosize">
|
|---|
| 505 | <primary sortas="b-isosize">isosize</primary>
|
|---|
| 506 | </indexterm>
|
|---|
| 507 | </listitem>
|
|---|
| 508 | </varlistentry>
|
|---|
| 509 |
|
|---|
| 510 | <varlistentry id="kill">
|
|---|
| 511 | <term><command>kill</command></term>
|
|---|
| 512 | <listitem>
|
|---|
| 513 | <para>Send a signal to a process</para>
|
|---|
| 514 | <indexterm zone="ch-system-util-linux kill">
|
|---|
| 515 | <primary sortas="b-kill">kill</primary>
|
|---|
| 516 | </indexterm>
|
|---|
| 517 | </listitem>
|
|---|
| 518 | </varlistentry>
|
|---|
| 519 |
|
|---|
| 520 | <varlistentry id="last">
|
|---|
| 521 | <term><command>last</command></term>
|
|---|
| 522 | <listitem>
|
|---|
| 523 | <para>Shows which users last logged in (and out), searching back
|
|---|
| 524 | through the <filename>/var/log/wtmp</filename> file; it also shows
|
|---|
| 525 | system boots, shutdowns, and run-level changes</para>
|
|---|
| 526 | <indexterm zone="ch-system-util-linux last">
|
|---|
| 527 | <primary sortas="b-last">last</primary>
|
|---|
| 528 | </indexterm>
|
|---|
| 529 | </listitem>
|
|---|
| 530 | </varlistentry>
|
|---|
| 531 |
|
|---|
| 532 | <varlistentry id="lastb">
|
|---|
| 533 | <term><command>lastb</command></term>
|
|---|
| 534 | <listitem>
|
|---|
| 535 | <para>Shows the failed login attempts, as logged in
|
|---|
| 536 | <filename>/var/log/btmp</filename></para>
|
|---|
| 537 | <indexterm zone="ch-system-util-linux lastb">
|
|---|
| 538 | <primary sortas="b-lastb">lastb</primary>
|
|---|
| 539 | </indexterm>
|
|---|
| 540 | </listitem>
|
|---|
| 541 | </varlistentry>
|
|---|
| 542 |
|
|---|
| 543 | <varlistentry id="ldattach">
|
|---|
| 544 | <term><command>ldattach</command></term>
|
|---|
| 545 | <listitem>
|
|---|
| 546 | <para>Attaches a line discipline to a serial line</para>
|
|---|
| 547 | <indexterm zone="ch-system-util-linux ldattach">
|
|---|
| 548 | <primary sortas="b-ldattach">ldattach</primary>
|
|---|
| 549 | </indexterm>
|
|---|
| 550 | </listitem>
|
|---|
| 551 | </varlistentry>
|
|---|
| 552 |
|
|---|
| 553 | <varlistentry id="logger">
|
|---|
| 554 | <term><command>logger</command></term>
|
|---|
| 555 | <listitem>
|
|---|
| 556 | <para>Enters the given message into the system log</para>
|
|---|
| 557 | <indexterm zone="ch-system-util-linux logger">
|
|---|
| 558 | <primary sortas="b-logger">logger</primary>
|
|---|
| 559 | </indexterm>
|
|---|
| 560 | </listitem>
|
|---|
| 561 | </varlistentry>
|
|---|
| 562 |
|
|---|
| 563 | <varlistentry id="look">
|
|---|
| 564 | <term><command>look</command></term>
|
|---|
| 565 | <listitem>
|
|---|
| 566 | <para>Displays lines that begin with the given string</para>
|
|---|
| 567 | <indexterm zone="ch-system-util-linux look">
|
|---|
| 568 | <primary sortas="b-look">look</primary>
|
|---|
| 569 | </indexterm>
|
|---|
| 570 | </listitem>
|
|---|
| 571 | </varlistentry>
|
|---|
| 572 |
|
|---|
| 573 | <varlistentry id="losetup">
|
|---|
| 574 | <term><command>losetup</command></term>
|
|---|
| 575 | <listitem>
|
|---|
| 576 | <para>Sets up and controls loop devices</para>
|
|---|
| 577 | <indexterm zone="ch-system-util-linux losetup">
|
|---|
| 578 | <primary sortas="b-losetup">losetup</primary>
|
|---|
| 579 | </indexterm>
|
|---|
| 580 | </listitem>
|
|---|
| 581 | </varlistentry>
|
|---|
| 582 |
|
|---|
| 583 | <varlistentry id="lsblk">
|
|---|
| 584 | <term><command>lsblk</command></term>
|
|---|
| 585 | <listitem>
|
|---|
| 586 | <para>Prints information about block devices</para>
|
|---|
| 587 | <indexterm zone="ch-system-util-linux lsblk">
|
|---|
| 588 | <primary sortas="b-lsblk">lsblk</primary>
|
|---|
| 589 | </indexterm>
|
|---|
| 590 | </listitem>
|
|---|
| 591 | </varlistentry>
|
|---|
| 592 |
|
|---|
| 593 | <varlistentry id="lscpu">
|
|---|
| 594 | <term><command>lscpu</command></term>
|
|---|
| 595 | <listitem>
|
|---|
| 596 | <para>Prints CPU architecture information</para>
|
|---|
| 597 | <indexterm zone="ch-system-util-linux lscpu">
|
|---|
| 598 | <primary sortas="b-lscpu">lscpu</primary>
|
|---|
| 599 | </indexterm>
|
|---|
| 600 | </listitem>
|
|---|
| 601 | </varlistentry>
|
|---|
| 602 |
|
|---|
| 603 | <varlistentry id="lslocks">
|
|---|
| 604 | <term><command>lslocks</command></term>
|
|---|
| 605 | <listitem>
|
|---|
| 606 | <para>Lists local system locks</para>
|
|---|
| 607 | <indexterm zone="ch-system-util-linux lslocks">
|
|---|
| 608 | <primary sortas="b-lslocks">lslocks</primary>
|
|---|
| 609 | </indexterm>
|
|---|
| 610 | </listitem>
|
|---|
| 611 | </varlistentry>
|
|---|
| 612 |
|
|---|
| 613 | <varlistentry id="mcookie">
|
|---|
| 614 | <term><command>mcookie</command></term>
|
|---|
| 615 | <listitem>
|
|---|
| 616 | <para>Generates magic cookies (128-bit random hexadecimal numbers) for
|
|---|
| 617 | <command>xauth</command></para>
|
|---|
| 618 | <indexterm zone="ch-system-util-linux mcookie">
|
|---|
| 619 | <primary sortas="b-mcookie">mcookie</primary>
|
|---|
| 620 | </indexterm>
|
|---|
| 621 | </listitem>
|
|---|
| 622 | </varlistentry>
|
|---|
| 623 |
|
|---|
| 624 | <varlistentry id="mesg">
|
|---|
| 625 | <term><command>mesg</command></term>
|
|---|
| 626 | <listitem>
|
|---|
| 627 | <para>Controls whether other users can send messages to the current
|
|---|
| 628 | user's terminal</para>
|
|---|
| 629 | <indexterm zone="ch-system-util-linux mesg">
|
|---|
| 630 | <primary sortas="b-mesg">mesg</primary>
|
|---|
| 631 | </indexterm>
|
|---|
| 632 | </listitem>
|
|---|
| 633 | </varlistentry>
|
|---|
| 634 |
|
|---|
| 635 | <varlistentry id="mkfs">
|
|---|
| 636 | <term><command>mkfs</command></term>
|
|---|
| 637 | <listitem>
|
|---|
| 638 | <para>Builds a file system on a device (usually a hard disk
|
|---|
| 639 | partition)</para>
|
|---|
| 640 | <indexterm zone="ch-system-util-linux mkfs">
|
|---|
| 641 | <primary sortas="b-mkfs">mkfs</primary>
|
|---|
| 642 | </indexterm>
|
|---|
| 643 | </listitem>
|
|---|
| 644 | </varlistentry>
|
|---|
| 645 |
|
|---|
| 646 | <varlistentry id="mkfs.bfs">
|
|---|
| 647 | <term><command>mkfs.bfs</command></term>
|
|---|
| 648 | <listitem>
|
|---|
| 649 | <para>Creates a Santa Cruz Operations (SCO) bfs file system</para>
|
|---|
| 650 | <indexterm zone="ch-system-util-linux mkfs.bfs">
|
|---|
| 651 | <primary sortas="b-mkfs.bfs">mkfs.bfs</primary>
|
|---|
| 652 | </indexterm>
|
|---|
| 653 | </listitem>
|
|---|
| 654 | </varlistentry>
|
|---|
| 655 |
|
|---|
| 656 | <varlistentry id="mkfs.cramfs">
|
|---|
| 657 | <term><command>mkfs.cramfs</command></term>
|
|---|
| 658 | <listitem>
|
|---|
| 659 | <para>Creates a cramfs file system</para>
|
|---|
| 660 | <indexterm zone="ch-system-util-linux mkfs.cramfs">
|
|---|
| 661 | <primary sortas="b-mkfs.cramfs">mkfs.cramfs</primary>
|
|---|
| 662 | </indexterm>
|
|---|
| 663 | </listitem>
|
|---|
| 664 | </varlistentry>
|
|---|
| 665 |
|
|---|
| 666 | <varlistentry id="mkfs.minix">
|
|---|
| 667 | <term><command>mkfs.minix</command></term>
|
|---|
| 668 | <listitem>
|
|---|
| 669 | <para>Creates a Minix file system</para>
|
|---|
| 670 | <indexterm zone="ch-system-util-linux mkfs.minix">
|
|---|
| 671 | <primary sortas="b-mkfs.minix">mkfs.minix</primary>
|
|---|
| 672 | </indexterm>
|
|---|
| 673 | </listitem>
|
|---|
| 674 | </varlistentry>
|
|---|
| 675 |
|
|---|
| 676 | <varlistentry id="mkswap">
|
|---|
| 677 | <term><command>mkswap</command></term>
|
|---|
| 678 | <listitem>
|
|---|
| 679 | <para>Initializes the given device or file to be used as a swap
|
|---|
| 680 | area</para>
|
|---|
| 681 | <indexterm zone="ch-system-util-linux mkswap">
|
|---|
| 682 | <primary sortas="b-mkswap">mkswap</primary>
|
|---|
| 683 | </indexterm>
|
|---|
| 684 | </listitem>
|
|---|
| 685 | </varlistentry>
|
|---|
| 686 |
|
|---|
| 687 | <varlistentry id="more">
|
|---|
| 688 | <term><command>more</command></term>
|
|---|
| 689 | <listitem>
|
|---|
| 690 | <para>A filter for paging through text one screen at a time</para>
|
|---|
| 691 | <indexterm zone="ch-system-util-linux more">
|
|---|
| 692 | <primary sortas="b-more">more</primary>
|
|---|
| 693 | </indexterm>
|
|---|
| 694 | </listitem>
|
|---|
| 695 | </varlistentry>
|
|---|
| 696 |
|
|---|
| 697 | <varlistentry id="mount">
|
|---|
| 698 | <term><command>mount</command></term>
|
|---|
| 699 | <listitem>
|
|---|
| 700 | <para>Attaches the file system on the given device to a specified
|
|---|
| 701 | directory in the file-system tree</para>
|
|---|
| 702 | <indexterm zone="ch-system-util-linux mount">
|
|---|
| 703 | <primary sortas="b-mount">mount</primary>
|
|---|
| 704 | </indexterm>
|
|---|
| 705 | </listitem>
|
|---|
| 706 | </varlistentry>
|
|---|
| 707 |
|
|---|
| 708 | <varlistentry id="mountpoint">
|
|---|
| 709 | <term><command>mountpoint</command></term>
|
|---|
| 710 | <listitem>
|
|---|
| 711 | <para>Tells you whether or not a directory is a mount point.</para>
|
|---|
| 712 | <indexterm zone="ch-system-util-linux mountpoint">
|
|---|
| 713 | <primary sortas="b-mountpoint">mountpoint</primary>
|
|---|
| 714 | </indexterm>
|
|---|
| 715 | </listitem>
|
|---|
| 716 | </varlistentry>
|
|---|
| 717 |
|
|---|
| 718 | <varlistentry id="namei">
|
|---|
| 719 | <term><command>namei</command></term>
|
|---|
| 720 | <listitem>
|
|---|
| 721 | <para>Shows the symbolic links in the given pathnames</para>
|
|---|
| 722 | <indexterm zone="ch-system-util-linux namei">
|
|---|
| 723 | <primary sortas="b-namei">namei</primary>
|
|---|
| 724 | </indexterm>
|
|---|
| 725 | </listitem>
|
|---|
| 726 | </varlistentry>
|
|---|
| 727 |
|
|---|
| 728 | <varlistentry id="nologin">
|
|---|
| 729 | <term><command>nologin</command></term>
|
|---|
| 730 | <listitem>
|
|---|
| 731 | <para>Displays a message that an account is not available. Designed
|
|---|
| 732 | to be used as the default shell for accounts that have been
|
|---|
| 733 | disabled</para>
|
|---|
| 734 | <indexterm zone="ch-system-util-linux nologin">
|
|---|
| 735 | <primary sortas="b-nologin">nologin</primary>
|
|---|
| 736 | </indexterm>
|
|---|
| 737 | </listitem>
|
|---|
| 738 | </varlistentry>
|
|---|
| 739 |
|
|---|
| 740 | <varlistentry id="nsenter">
|
|---|
| 741 | <term><command>nsenter</command></term>
|
|---|
| 742 | <listitem>
|
|---|
| 743 | <para>Runs a program with namespaces of other processes</para>
|
|---|
| 744 | <indexterm zone="ch-system-util-linux nsenter">
|
|---|
| 745 | <primary sortas="b-nsenter">nsenter</primary>
|
|---|
| 746 | </indexterm>
|
|---|
| 747 | </listitem>
|
|---|
| 748 | </varlistentry>
|
|---|
| 749 |
|
|---|
| 750 | <varlistentry id="partx">
|
|---|
| 751 | <term><command>partx</command></term>
|
|---|
| 752 | <listitem>
|
|---|
| 753 | <para>Tells the kernel about the presence and numbering of on-disk
|
|---|
| 754 | partitions</para>
|
|---|
| 755 | <indexterm zone="ch-system-util-linux partx">
|
|---|
| 756 | <primary sortas="b-partx">partx</primary>
|
|---|
| 757 | </indexterm>
|
|---|
| 758 | </listitem>
|
|---|
| 759 | </varlistentry>
|
|---|
| 760 |
|
|---|
| 761 | <varlistentry id="pg">
|
|---|
| 762 | <term><command>pg</command></term>
|
|---|
| 763 | <listitem>
|
|---|
| 764 | <para>Displays a text file one screen full at a time</para>
|
|---|
| 765 | <indexterm zone="ch-system-util-linux pg">
|
|---|
| 766 | <primary sortas="b-pg">pg</primary>
|
|---|
| 767 | </indexterm>
|
|---|
| 768 | </listitem>
|
|---|
| 769 | </varlistentry>
|
|---|
| 770 |
|
|---|
| 771 | <varlistentry id="pivot_root">
|
|---|
| 772 | <term><command>pivot_root</command></term>
|
|---|
| 773 | <listitem>
|
|---|
| 774 | <para>Makes the given file system the new root file system of the
|
|---|
| 775 | current process</para>
|
|---|
| 776 | <indexterm zone="ch-system-util-linux pivot_root">
|
|---|
| 777 | <primary sortas="b-pivot_root">pivot_root</primary>
|
|---|
| 778 | </indexterm>
|
|---|
| 779 | </listitem>
|
|---|
| 780 | </varlistentry>
|
|---|
| 781 |
|
|---|
| 782 | <varlistentry id="prlimit">
|
|---|
| 783 | <term><command>prlimit</command></term>
|
|---|
| 784 | <listitem>
|
|---|
| 785 | <para>Gets and sets a process' resource limits</para>
|
|---|
| 786 | <indexterm zone="ch-system-util-linux prlimit">
|
|---|
| 787 | <primary sortas="b-prlimit">prlimit</primary>
|
|---|
| 788 | </indexterm>
|
|---|
| 789 | </listitem>
|
|---|
| 790 | </varlistentry>
|
|---|
| 791 |
|
|---|
| 792 | <varlistentry id="raw">
|
|---|
| 793 | <term><command>raw</command></term>
|
|---|
| 794 | <listitem>
|
|---|
| 795 | <para>Binds a Linux raw character device to a block device</para>
|
|---|
| 796 | <indexterm zone="ch-system-util-linux raw">
|
|---|
| 797 | <primary sortas="b-raw">raw</primary>
|
|---|
| 798 | </indexterm>
|
|---|
| 799 | </listitem>
|
|---|
| 800 | </varlistentry>
|
|---|
| 801 |
|
|---|
| 802 | <varlistentry id="readprofile">
|
|---|
| 803 | <term><command>readprofile</command></term>
|
|---|
| 804 | <listitem>
|
|---|
| 805 | <para>Reads kernel profiling information</para>
|
|---|
| 806 | <indexterm zone="ch-system-util-linux readprofile">
|
|---|
| 807 | <primary sortas="b-readprofile">readprofile</primary>
|
|---|
| 808 | </indexterm>
|
|---|
| 809 | </listitem>
|
|---|
| 810 | </varlistentry>
|
|---|
| 811 |
|
|---|
| 812 | <varlistentry id="rename">
|
|---|
| 813 | <term><command>rename</command></term>
|
|---|
| 814 | <listitem>
|
|---|
| 815 | <para>Renames the given files, replacing a given string with
|
|---|
| 816 | another</para>
|
|---|
| 817 | <indexterm zone="ch-system-util-linux rename">
|
|---|
| 818 | <primary sortas="b-rename">rename</primary>
|
|---|
| 819 | </indexterm>
|
|---|
| 820 | </listitem>
|
|---|
| 821 | </varlistentry>
|
|---|
| 822 |
|
|---|
| 823 | <varlistentry id="renice">
|
|---|
| 824 | <term><command>renice</command></term>
|
|---|
| 825 | <listitem>
|
|---|
| 826 | <para>Alters the priority of running processes</para>
|
|---|
| 827 | <indexterm zone="ch-system-util-linux renice">
|
|---|
| 828 | <primary sortas="b-renice">renice</primary>
|
|---|
| 829 | </indexterm>
|
|---|
| 830 | </listitem>
|
|---|
| 831 | </varlistentry>
|
|---|
| 832 |
|
|---|
| 833 | <varlistentry id="resizepart">
|
|---|
| 834 | <term><command>resizepart</command></term>
|
|---|
| 835 | <listitem>
|
|---|
| 836 | <para>Asks the Linux kernel to resize a partition</para>
|
|---|
| 837 | <indexterm zone="ch-system-util-linux resizepart">
|
|---|
| 838 | <primary sortas="b-resizepart">resizepart</primary>
|
|---|
| 839 | </indexterm>
|
|---|
| 840 | </listitem>
|
|---|
| 841 | </varlistentry>
|
|---|
| 842 |
|
|---|
| 843 | <varlistentry id="rev">
|
|---|
| 844 | <term><command>rev</command></term>
|
|---|
| 845 | <listitem>
|
|---|
| 846 | <para>Reverses the lines of a given file</para>
|
|---|
| 847 | <indexterm zone="ch-system-util-linux rev">
|
|---|
| 848 | <primary sortas="b-rev">rev</primary>
|
|---|
| 849 | </indexterm>
|
|---|
| 850 | </listitem>
|
|---|
| 851 | </varlistentry>
|
|---|
| 852 |
|
|---|
| 853 | <varlistentry id="rtcwake">
|
|---|
| 854 | <term><command>rtcwake</command></term>
|
|---|
| 855 | <listitem>
|
|---|
| 856 | <para>Enters a system sleep state until a specified wakeup time</para>
|
|---|
| 857 | <indexterm zone="ch-system-util-linux rtcwake">
|
|---|
| 858 | <primary sortas="b-rtcwake">rtcwake</primary>
|
|---|
| 859 | </indexterm>
|
|---|
| 860 | </listitem>
|
|---|
| 861 | </varlistentry>
|
|---|
| 862 |
|
|---|
| 863 | <varlistentry id="script">
|
|---|
| 864 | <term><command>script</command></term>
|
|---|
| 865 | <listitem>
|
|---|
| 866 | <para>Makes a typescript of a terminal session</para>
|
|---|
| 867 | <indexterm zone="ch-system-util-linux script">
|
|---|
| 868 | <primary sortas="b-script">script</primary>
|
|---|
| 869 | </indexterm>
|
|---|
| 870 | </listitem>
|
|---|
| 871 | </varlistentry>
|
|---|
| 872 |
|
|---|
| 873 | <varlistentry id="scriptreplay">
|
|---|
| 874 | <term><command>scriptreplay</command></term>
|
|---|
| 875 | <listitem>
|
|---|
| 876 | <para>Plays back typescripts created by <command>script</command></para>
|
|---|
| 877 | <indexterm zone="ch-system-util-linux scriptreplay">
|
|---|
| 878 | <primary sortas="b-scriptreplay">scriptreplay</primary>
|
|---|
| 879 | </indexterm>
|
|---|
| 880 | </listitem>
|
|---|
| 881 | </varlistentry>
|
|---|
| 882 |
|
|---|
| 883 | <varlistentry id="setarch">
|
|---|
| 884 | <term><command>setarch</command></term>
|
|---|
| 885 | <listitem>
|
|---|
| 886 | <para>Changes reported architecture in new program environment and
|
|---|
| 887 | sets personality flags</para>
|
|---|
| 888 | <indexterm zone="ch-system-util-linux setarch">
|
|---|
| 889 | <primary sortas="b-setarch">setarch</primary>
|
|---|
| 890 | </indexterm>
|
|---|
| 891 | </listitem>
|
|---|
| 892 | </varlistentry>
|
|---|
| 893 |
|
|---|
| 894 | <varlistentry id="setsid">
|
|---|
| 895 | <term><command>setsid</command></term>
|
|---|
| 896 | <listitem>
|
|---|
| 897 | <para>Runs the given program in a new session</para>
|
|---|
| 898 | <indexterm zone="ch-system-util-linux setsid">
|
|---|
| 899 | <primary sortas="b-setsid">setsid</primary>
|
|---|
| 900 | </indexterm>
|
|---|
| 901 | </listitem>
|
|---|
| 902 | </varlistentry>
|
|---|
| 903 |
|
|---|
| 904 | <varlistentry id="setterm">
|
|---|
| 905 | <term><command>setterm</command></term>
|
|---|
| 906 | <listitem>
|
|---|
| 907 | <para>Sets terminal attributes</para>
|
|---|
| 908 | <indexterm zone="ch-system-util-linux setterm">
|
|---|
| 909 | <primary sortas="b-setterm">setterm</primary>
|
|---|
| 910 | </indexterm>
|
|---|
| 911 | </listitem>
|
|---|
| 912 | </varlistentry>
|
|---|
| 913 |
|
|---|
| 914 | <varlistentry id="sfdisk">
|
|---|
| 915 | <term><command>sfdisk</command></term>
|
|---|
| 916 | <listitem>
|
|---|
| 917 | <para>A disk partition table manipulator</para>
|
|---|
| 918 | <indexterm zone="ch-system-util-linux sfdisk">
|
|---|
| 919 | <primary sortas="b-sfdisk">sfdisk</primary>
|
|---|
| 920 | </indexterm>
|
|---|
| 921 | </listitem>
|
|---|
| 922 | </varlistentry>
|
|---|
| 923 |
|
|---|
| 924 | <varlistentry id="sulogin">
|
|---|
| 925 | <term><command>sulogin</command></term>
|
|---|
| 926 | <listitem>
|
|---|
| 927 | <para>Allows <emphasis>root</emphasis> to log in; it is normally
|
|---|
| 928 | invoked by <command>init</command> when the system goes into single
|
|---|
| 929 | user mode</para>
|
|---|
| 930 | <indexterm zone="ch-system-util-linux sulogin">
|
|---|
| 931 | <primary sortas="b-sulogin">sulogin</primary>
|
|---|
| 932 | </indexterm>
|
|---|
| 933 | </listitem>
|
|---|
| 934 | </varlistentry>
|
|---|
| 935 |
|
|---|
| 936 | <varlistentry id="swaplabel">
|
|---|
| 937 | <term><command>swaplabel</command></term>
|
|---|
| 938 | <listitem>
|
|---|
| 939 | <para>Prints or changes the label or UUID of a swap area</para>
|
|---|
| 940 | <indexterm zone="ch-system-util-linux swaplabel">
|
|---|
| 941 | <primary sortas="b-swaplabel">swaplabel</primary>
|
|---|
| 942 | </indexterm>
|
|---|
| 943 | </listitem>
|
|---|
| 944 | </varlistentry>
|
|---|
| 945 |
|
|---|
| 946 | <varlistentry id="swapoff">
|
|---|
| 947 | <term><command>swapoff</command></term>
|
|---|
| 948 | <listitem>
|
|---|
| 949 | <para>Disables devices and files for paging and swapping</para>
|
|---|
| 950 | <indexterm zone="ch-system-util-linux swapoff">
|
|---|
| 951 | <primary sortas="b-swapoff">swapoff</primary>
|
|---|
| 952 | </indexterm>
|
|---|
| 953 | </listitem>
|
|---|
| 954 | </varlistentry>
|
|---|
| 955 |
|
|---|
| 956 | <varlistentry id="swapon">
|
|---|
| 957 | <term><command>swapon</command></term>
|
|---|
| 958 | <listitem>
|
|---|
| 959 | <para>Enables devices and files for paging and swapping and
|
|---|
| 960 | lists the devices and files currently in use</para>
|
|---|
| 961 | <indexterm zone="ch-system-util-linux swapon">
|
|---|
| 962 | <primary sortas="b-swapon">swapon</primary>
|
|---|
| 963 | </indexterm>
|
|---|
| 964 | </listitem>
|
|---|
| 965 | </varlistentry>
|
|---|
| 966 |
|
|---|
| 967 | <varlistentry id="switch_root">
|
|---|
| 968 | <term><command>switch_root</command></term>
|
|---|
| 969 | <listitem>
|
|---|
| 970 | <para>Switches to another filesystem as the root of the mount tree</para>
|
|---|
| 971 | <indexterm zone="ch-system-util-linux switch_root">
|
|---|
| 972 | <primary sortas="b-switch_root">switch_root</primary>
|
|---|
| 973 | </indexterm>
|
|---|
| 974 | </listitem>
|
|---|
| 975 | </varlistentry>
|
|---|
| 976 |
|
|---|
| 977 | <varlistentry id="tailf">
|
|---|
| 978 | <term><command>tailf</command></term>
|
|---|
| 979 | <listitem>
|
|---|
| 980 | <para>Tracks the growth of a log file. Displays the last 10 lines
|
|---|
| 981 | of a log file, then continues displaying any new entries in the
|
|---|
| 982 | log file as they are created</para>
|
|---|
| 983 | <indexterm zone="ch-system-util-linux tailf">
|
|---|
| 984 | <primary sortas="b-tailf">tailf</primary>
|
|---|
| 985 | </indexterm>
|
|---|
| 986 | </listitem>
|
|---|
| 987 | </varlistentry>
|
|---|
| 988 |
|
|---|
| 989 | <varlistentry id="taskset">
|
|---|
| 990 | <term><command>taskset</command></term>
|
|---|
| 991 | <listitem>
|
|---|
| 992 | <para>Retrieves or sets a process's CPU affinity</para>
|
|---|
| 993 | <indexterm zone="ch-system-util-linux taskset">
|
|---|
| 994 | <primary sortas="b-taskset">taskset</primary>
|
|---|
| 995 | </indexterm>
|
|---|
| 996 | </listitem>
|
|---|
| 997 | </varlistentry>
|
|---|
| 998 |
|
|---|
| 999 | <varlistentry id="ul">
|
|---|
| 1000 | <term><command>ul</command></term>
|
|---|
| 1001 | <listitem>
|
|---|
| 1002 | <para>A filter for translating underscores into escape sequences
|
|---|
| 1003 | indicating underlining for the terminal in use</para>
|
|---|
| 1004 | <indexterm zone="ch-system-util-linux ul">
|
|---|
| 1005 | <primary sortas="b-ul">ul</primary>
|
|---|
| 1006 | </indexterm>
|
|---|
| 1007 | </listitem>
|
|---|
| 1008 | </varlistentry>
|
|---|
| 1009 |
|
|---|
| 1010 | <varlistentry id="umount">
|
|---|
| 1011 | <term><command>umount</command></term>
|
|---|
| 1012 | <listitem>
|
|---|
| 1013 | <para>Disconnects a file system from the system's file tree</para>
|
|---|
| 1014 | <indexterm zone="ch-system-util-linux umount">
|
|---|
| 1015 | <primary sortas="b-umount">umount</primary>
|
|---|
| 1016 | </indexterm>
|
|---|
| 1017 | </listitem>
|
|---|
| 1018 | </varlistentry>
|
|---|
| 1019 |
|
|---|
| 1020 | <varlistentry id="unshare">
|
|---|
| 1021 | <term><command>unshare</command></term>
|
|---|
| 1022 | <listitem>
|
|---|
| 1023 | <para>Runs a program with some namespaces unshared from parent</para>
|
|---|
| 1024 | <indexterm zone="ch-system-util-linux unshare">
|
|---|
| 1025 | <primary sortas="b-unshare">unshare</primary>
|
|---|
| 1026 | </indexterm>
|
|---|
| 1027 | </listitem>
|
|---|
| 1028 | </varlistentry>
|
|---|
| 1029 |
|
|---|
| 1030 | <varlistentry id="utmpdump">
|
|---|
| 1031 | <term><command>utmpdump</command></term>
|
|---|
| 1032 | <listitem>
|
|---|
| 1033 | <para>Displays the content of the given login file in a more
|
|---|
| 1034 | user-friendly format</para>
|
|---|
| 1035 | <indexterm zone="ch-system-util-linux utmpdump">
|
|---|
| 1036 | <primary sortas="b-utmpdump">utmpdump</primary>
|
|---|
| 1037 | </indexterm>
|
|---|
| 1038 | </listitem>
|
|---|
| 1039 | </varlistentry>
|
|---|
| 1040 |
|
|---|
| 1041 | <varlistentry id="uuidd">
|
|---|
| 1042 | <term><command>uuidd</command></term>
|
|---|
| 1043 | <listitem>
|
|---|
| 1044 | <para>A daemon used by the UUID library to generate time-based
|
|---|
| 1045 | UUIDs in a secure and guranteed-unique fashion.</para>
|
|---|
| 1046 | <indexterm zone="ch-system-util-linux uuidd">
|
|---|
| 1047 | <primary sortas="b-uuidd">uuidd</primary>
|
|---|
| 1048 | </indexterm>
|
|---|
| 1049 | </listitem>
|
|---|
| 1050 | </varlistentry>
|
|---|
| 1051 |
|
|---|
| 1052 | <varlistentry id="uuidgen">
|
|---|
| 1053 | <term><command>uuidgen</command></term>
|
|---|
| 1054 | <listitem>
|
|---|
| 1055 | <para>Creates new UUIDs. Each new UUID can reasonably be considered
|
|---|
| 1056 | unique among all UUIDs created, on the local system and on other
|
|---|
| 1057 | systems, in the past and in the future</para>
|
|---|
| 1058 | <indexterm zone="ch-system-util-linux uuidgen">
|
|---|
| 1059 | <primary sortas="b-uuidgen">uuidgen</primary>
|
|---|
| 1060 | </indexterm>
|
|---|
| 1061 | </listitem>
|
|---|
| 1062 | </varlistentry>
|
|---|
| 1063 |
|
|---|
| 1064 | <varlistentry id="wall">
|
|---|
| 1065 | <term><command>wall</command></term>
|
|---|
| 1066 | <listitem>
|
|---|
| 1067 | <para>Writes a message to all logged-in users</para>
|
|---|
| 1068 | <indexterm zone="ch-system-util-linux wall">
|
|---|
| 1069 | <primary sortas="b-wall">wall</primary>
|
|---|
| 1070 | </indexterm>
|
|---|
| 1071 | </listitem>
|
|---|
| 1072 | </varlistentry>
|
|---|
| 1073 |
|
|---|
| 1074 | <varlistentry id="wdctl">
|
|---|
| 1075 | <term><command>wdctl</command></term>
|
|---|
| 1076 | <listitem>
|
|---|
| 1077 | <para>Show hardware watchdog status</para>
|
|---|
| 1078 | <indexterm zone="ch-system-util-linux wdctl">
|
|---|
| 1079 | <primary sortas="b-uuidgen">wdctl</primary>
|
|---|
| 1080 | </indexterm>
|
|---|
| 1081 | </listitem>
|
|---|
| 1082 | </varlistentry>
|
|---|
| 1083 |
|
|---|
| 1084 | <varlistentry id="whereis">
|
|---|
| 1085 | <term><command>whereis</command></term>
|
|---|
| 1086 | <listitem>
|
|---|
| 1087 | <para>Reports the location of the binary, source, and man page
|
|---|
| 1088 | for the given command</para>
|
|---|
| 1089 | <indexterm zone="ch-system-util-linux whereis">
|
|---|
| 1090 | <primary sortas="b-whereis">whereis</primary>
|
|---|
| 1091 | </indexterm>
|
|---|
| 1092 | </listitem>
|
|---|
| 1093 | </varlistentry>
|
|---|
| 1094 |
|
|---|
| 1095 | <varlistentry id="wipefs">
|
|---|
| 1096 | <term><command>wipefs</command></term>
|
|---|
| 1097 | <listitem>
|
|---|
| 1098 | <para>Wipes a filesystem signature from a device</para>
|
|---|
| 1099 | <indexterm zone="ch-system-util-linux wipefs">
|
|---|
| 1100 | <primary sortas="b-wipefs">wipefs</primary>
|
|---|
| 1101 | </indexterm>
|
|---|
| 1102 | </listitem>
|
|---|
| 1103 | </varlistentry>
|
|---|
| 1104 |
|
|---|
| 1105 | <varlistentry id="write">
|
|---|
| 1106 | <term><command>write</command></term>
|
|---|
| 1107 | <listitem>
|
|---|
| 1108 | <para>Sends a message to the given user <emphasis>if</emphasis> that
|
|---|
| 1109 | user has not disabled receipt of such messages</para>
|
|---|
| 1110 | <indexterm zone="ch-system-util-linux write">
|
|---|
| 1111 | <primary sortas="b-write">write</primary>
|
|---|
| 1112 | </indexterm>
|
|---|
| 1113 | </listitem>
|
|---|
| 1114 | </varlistentry>
|
|---|
| 1115 |
|
|---|
| 1116 | <varlistentry id="libblkid">
|
|---|
| 1117 | <term><filename class="libraryfile">libblkid</filename></term>
|
|---|
| 1118 | <listitem>
|
|---|
| 1119 | <para>Contains routines for device identification and token
|
|---|
| 1120 | extraction</para>
|
|---|
| 1121 | <indexterm zone="ch-system-util-linux libblkid">
|
|---|
| 1122 | <primary sortas="c-libblkid">libblkid</primary>
|
|---|
| 1123 | </indexterm>
|
|---|
| 1124 | </listitem>
|
|---|
| 1125 | </varlistentry>
|
|---|
| 1126 |
|
|---|
| 1127 | <varlistentry id="libmount">
|
|---|
| 1128 | <term><filename class="libraryfile">libmount</filename></term>
|
|---|
| 1129 | <listitem>
|
|---|
| 1130 | <para>Contains routines for parsing the
|
|---|
| 1131 | <filename>/etc/fstab</filename>, <filename>/etc/mtab</filename>,
|
|---|
| 1132 | and <filename>/proc/self/mountinfo</filename> files, managing
|
|---|
| 1133 | <filename>/etc/mtab</filename>, and configuring various mount
|
|---|
| 1134 | options</para>
|
|---|
| 1135 | <indexterm zone="ch-system-util-linux libmount">
|
|---|
| 1136 | <primary sortas="c-libmount">libmount</primary>
|
|---|
| 1137 | </indexterm>
|
|---|
| 1138 | </listitem>
|
|---|
| 1139 | </varlistentry>
|
|---|
| 1140 |
|
|---|
| 1141 | <varlistentry id="libuuid">
|
|---|
| 1142 | <term><filename class="libraryfile">libuuid</filename></term>
|
|---|
| 1143 | <listitem>
|
|---|
| 1144 | <para>Contains routines for generating unique identifiers for objects
|
|---|
| 1145 | that may be accessible beyond the local system</para>
|
|---|
| 1146 | <indexterm zone="ch-system-util-linux libuuid">
|
|---|
| 1147 | <primary sortas="c-libuuid">libuuid</primary>
|
|---|
| 1148 | </indexterm>
|
|---|
| 1149 | </listitem>
|
|---|
| 1150 | </varlistentry>
|
|---|
| 1151 |
|
|---|
| 1152 | </variablelist>
|
|---|
| 1153 |
|
|---|
| 1154 | </sect2>
|
|---|
| 1155 |
|
|---|
| 1156 | </sect1>
|
|---|
