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