BOOK/chapter06/util-linux-ng.xml

   1 <?xml version="1.0" encoding="ISO-8859-1"?>
   2 <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
   3   "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
   4   <!ENTITY % general-entities SYSTEM "../general.ent">
   5   %general-entities;
   6 ]>
   7
   8 <sect1 id="ch-system-util-linux-ng" role="wrap">
   9   <?dbhtml filename="util-linux-ng.html"?>
  10
  11   <sect1info condition="script">
  12     <productname>util-linux-ng</productname>
  13     <productnumber>&util-linux-ng-version;</productnumber>
  14     <address>&util-linux-ng-url;</address>
  15   </sect1info>
  16
  17   <title>Util-linux-ng-&util-linux-ng-version;</title>
  18
  19   <indexterm zone="ch-system-util-linux-ng">
  20     <primary sortas="a-Util-linux-ng">Util-linux-ng</primary>
  21   </indexterm>
  22
  23   <sect2 role="package">
  24     <title/>
  25
  26     <para>The Util-linux-ng package contains miscellaneous utility programs.
  27     Among them are utilities for handling file systems, consoles, partitions,
  28     and messages.</para>
  29
  30     <segmentedlist>
  31       <segtitle>&buildtime;</segtitle>
  32       <segtitle>&diskspace;</segtitle>
  33
  34       <seglistitem>
  35         <seg>&util-linux-ng-ch6-sbu;</seg>
  36         <seg>&util-linux-ng-ch6-du;</seg>
  37       </seglistitem>
  38     </segmentedlist>
  39
  40   </sect2>
  41
  42   <sect2 role="installation">
  43     <title>FHS compliance notes</title>
  44
  45     <para>The FHS recommends using the <filename
  46     class="directory">/var/lib/hwclock</filename> directory instead of the
  47     usual <filename class="directory">/etc</filename> directory as the
  48     location for the <filename>adjtime</filename> file. To make the
  49     <command>hwclock</command> program FHS-compliant, run the
  50     following:</para>
  51
  52 <screen><userinput remap="pre">sed -e 's@etc/adjtime@var/lib/hwclock/adjtime@g' \
  53     -i $(grep -rl '/etc/adjtime' .)
  54 mkdir -pv /var/lib/hwclock</userinput></screen>
  55
  56   </sect2>
  57
  58   <sect2 role="installation">
  59     <title>Installation of Util-linux-ng</title>
  60
  61 <screen><userinput remap="configure">./configure --enable-arch --enable-partx --enable-write</userinput></screen>
  62
  63     <variablelist>
  64       <title>The meaning of the configure options:</title>
  65
  66       <varlistentry>
  67         <term><parameter>--enable-arch</parameter></term>
  68         <listitem>
  69           <para>Enables building the <command>arch</command> program</para>
  70         </listitem>
  71       </varlistentry>
  72       <varlistentry>
  73         <term><parameter>--enable-partx</parameter></term>
  74         <listitem>
  75           <para>Enables building the <command>addpart</command>,
  76           <command>delpart</command> and <command>partx</command>
  77           programs</para>
  78         </listitem>
  79       </varlistentry>
  80       <varlistentry>
  81         <term><parameter>--enable-write</parameter></term>
  82         <listitem>
  83           <para>Enables building the <command>write</command> program</para>
  84         </listitem>
  85       </varlistentry>
  86
  87     </variablelist>
  88
  89     <para>Compile the package:</para>
  90
  91 <screen><userinput remap="make">make</userinput></screen>
  92
  93     <para>This package does not come with a test suite.</para>
  94
  95     <para>Install the package:</para>
  96
  97 <screen><userinput remap="install">make install</userinput></screen>
  98
  99   </sect2>
 100
 101   <sect2 id="contents-utillinux" role="content">
 102     <title>Contents of Util-linux-ng</title>
 103
 104     <segmentedlist>
 105       <segtitle>Installed programs</segtitle>
 106       <segtitle>Installed libraries</segtitle>
 107
 108       <seglistitem>
 109         <seg>addpart, agetty, arch, blkid, blockdev, cal, cfdisk, chkdupexe,
 110         chrt, col, colcrt, colrm, column, ctrlaltdel, cytune, ddate, delpart,
 111         dmesg, fdformat, fdisk, findfs, flock, fsck, fsck.cramfs, fsck.minix,
 112         getopt, hexdump, hwclock, i386, ionice, ipcmk, ipcrm, ipcs, isosize,
 113         ldattach, line, linux32, linux64, logger, look, losetup, lscpu,
 114         mcookie, mkfs, mkfs.bfs, mkfs.cramfs, mkfs.minix, mkswap, more, mount,
 115         namei, partx, pg, pivot_root, readprofile, rename, renice, rev,
 116         rtcwake, script, scriptreplay, setarch, setsid, setterm, sfdisk,
 117         swapoff (link to swapon), swapon, switch_root, tailf, taskset, tunelp,
 118         ul, umount, uuidd, uuidgen, wall, whereis, and write</seg>
 119         <seg>libblkid.{a,so}, libuuid.{a,so}</seg>
 120       </seglistitem>
 121     </segmentedlist>
 122
 123     <variablelist>
 124       <bridgehead renderas="sect3">Short Descriptions</bridgehead>
 125       <?dbfo list-presentation="list"?>
 126       <?dbhtml list-presentation="table"?>
 127
 128       <varlistentry id="addpart">
 129         <term><command>addpart</command></term>
 130         <listitem>
 131           <para>Informs the Linux kernel of new partitions</para>
 132           <indexterm zone="ch-system-util-linux-ng addpart">
 133             <primary sortas="b-addpart">addpart</primary>
 134           </indexterm>
 135         </listitem>
 136       </varlistentry>
 137
 138       <varlistentry id="agetty">
 139         <term><command>agetty</command></term>
 140         <listitem>
 141           <para>Opens a tty port, prompts for a login name,
 142           and then invokes the <command>login</command> program</para>
 143           <indexterm zone="ch-system-util-linux-ng agetty">
 144             <primary sortas="b-agetty">agetty</primary>
 145           </indexterm>
 146         </listitem>
 147       </varlistentry>
 148
 149       <varlistentry id="arch">
 150         <term><command>arch</command></term>
 151         <listitem>
 152           <para>Reports the machine's architecture</para>
 153           <indexterm zone="ch-system-util-linux-ng arch">
 154             <primary sortas="b-arch">arch</primary>
 155           </indexterm>
 156         </listitem>
 157       </varlistentry>
 158
 159       <varlistentry id="blkid">
 160         <term><command>blkid</command></term>
 161         <listitem>
 162           <para>A command line utility to locate and print block device
 163           attributes</para>
 164           <indexterm zone="ch-system-util-linux-ng blkid">
 165             <primary sortas="b-blkid">blkid</primary>
 166           </indexterm>
 167         </listitem>
 168       </varlistentry>
 169
 170       <varlistentry id="blockdev">
 171         <term><command>blockdev</command></term>
 172         <listitem>
 173           <para>Allows users to call block device ioctls from the command
 174           line</para>
 175           <indexterm zone="ch-system-util-linux-ng blockdev">
 176             <primary sortas="b-blockdev">blockdev</primary>
 177           </indexterm>
 178         </listitem>
 179       </varlistentry>
 180
 181       <varlistentry id="cal">
 182         <term><command>cal</command></term>
 183         <listitem>
 184           <para>Displays a simple calendar</para>
 185           <indexterm zone="ch-system-util-linux-ng cal">
 186             <primary sortas="b-cal">cal</primary>
 187           </indexterm>
 188         </listitem>
 189       </varlistentry>
 190
 191       <varlistentry id="cfdisk">
 192         <term><command>cfdisk</command></term>
 193         <listitem>
 194           <para>Manipulates the partition table of the given device</para>
 195           <indexterm zone="ch-system-util-linux-ng cfdisk">
 196             <primary sortas="b-cfdisk">cfdisk</primary>
 197           </indexterm>
 198         </listitem>
 199       </varlistentry>
 200
 201       <varlistentry id="chkdupexe">
 202         <term><command>chkdupexe</command></term>
 203         <listitem>
 204           <para>Finds duplicate executables</para>
 205           <indexterm zone="ch-system-util-linux-ng chkdupexe">
 206             <primary sortas="b-chkdupexe">chkdupexe</primary>
 207           </indexterm>
 208         </listitem>
 209       </varlistentry>
 210
 211       <varlistentry id="chrt">
 212         <term><command>chrt</command></term>
 213         <listitem>
 214           <para>Manipulates real-time attributes of a process</para>
 215           <indexterm zone="ch-system-util-linux-ng chrt">
 216             <primary sortas="b-chrt">chrt</primary>
 217           </indexterm>
 218         </listitem>
 219       </varlistentry>
 220
 221       <varlistentry id="col">
 222         <term><command>col</command></term>
 223         <listitem>
 224           <para>Filters out reverse line feeds</para>
 225           <indexterm zone="ch-system-util-linux-ng col">
 226             <primary sortas="b-col">col</primary>
 227           </indexterm>
 228         </listitem>
 229       </varlistentry>
 230
 231       <varlistentry id="colcrt">
 232         <term><command>colcrt</command></term>
 233         <listitem>
 234           <para>Filters <command>nroff</command> output for terminals
 235           that lack some capabilities, such as overstriking and half-lines</para>
 236           <indexterm zone="ch-system-util-linux-ng colcrt">
 237             <primary sortas="b-colcrt">colcrt</primary>
 238           </indexterm>
 239         </listitem>
 240       </varlistentry>
 241
 242       <varlistentry id="colrm">
 243         <term><command>colrm</command></term>
 244         <listitem>
 245           <para>Filters out the given columns</para>
 246           <indexterm zone="ch-system-util-linux-ng colrm">
 247             <primary sortas="b-colrm">colrm</primary>
 248           </indexterm>
 249         </listitem>
 250       </varlistentry>
 251
 252       <varlistentry id="column">
 253         <term><command>column</command></term>
 254         <listitem>
 255           <para>Formats a given file into multiple columns</para>
 256           <indexterm zone="ch-system-util-linux-ng column">
 257             <primary sortas="b-column">column</primary>
 258           </indexterm>
 259         </listitem>
 260       </varlistentry>
 261
 262       <varlistentry id="ctrlaltdel">
 263         <term><command>ctrlaltdel</command></term>
 264         <listitem>
 265           <para>Sets the function of the Ctrl+Alt+Del key combination to a
 266           hard or a soft reset</para>
 267           <indexterm zone="ch-system-util-linux-ng ctrlaltdel">
 268             <primary sortas="b-ctrlaltdel">ctrlaltdel</primary>
 269           </indexterm>
 270         </listitem>
 271       </varlistentry>
 272
 273       <varlistentry id="cytune">
 274         <term><command>cytune</command></term>
 275         <listitem>
 276           <para>Tunes the parameters of the serial line drivers for
 277           Cyclades cards</para>
 278           <indexterm zone="ch-system-util-linux-ng cytune">
 279             <primary sortas="b-cytune">cytune</primary>
 280           </indexterm>
 281         </listitem>
 282       </varlistentry>
 283
 284       <varlistentry id="ddate">
 285         <term><command>ddate</command></term>
 286         <listitem>
 287           <para>Gives the Discordian date or converts the given Gregorian date
 288           to a Discordian one</para>
 289           <indexterm zone="ch-system-util-linux-ng ddate">
 290             <primary sortas="b-ddate">ddate</primary>
 291           </indexterm>
 292         </listitem>
 293       </varlistentry>
 294
 295       <varlistentry id="delpart">
 296         <term><command>delpart</command></term>
 297         <listitem>
 298           <para>Asks the Linux kernel to remove a partition</para>
 299           <indexterm zone="ch-system-util-linux-ng delpart">
 300             <primary sortas="b-delpart">delpart</primary>
 301           </indexterm>
 302         </listitem>
 303       </varlistentry>
 304
 305       <varlistentry id="dmesg">
 306         <term><command>dmesg</command></term>
 307         <listitem>
 308           <para>Dumps the kernel boot messages</para>
 309           <indexterm zone="ch-system-util-linux-ng dmesg">
 310             <primary sortas="b-dmesg">dmesg</primary>
 311           </indexterm>
 312         </listitem>
 313       </varlistentry>
 314
 315       <varlistentry id="fdformat">
 316         <term><command>fdformat</command></term>
 317         <listitem>
 318           <para>Low-level formats a floppy disk</para>
 319           <indexterm zone="ch-system-util-linux-ng fdformat">
 320             <primary sortas="b-fdformat">fdformat</primary>
 321           </indexterm>
 322         </listitem>
 323       </varlistentry>
 324
 325       <varlistentry id="fdisk">
 326         <term><command>fdisk</command></term>
 327         <listitem>
 328           <para>Manipulates the paritition table of the given device</para>
 329           <indexterm zone="ch-system-util-linux-ng fdisk">
 330             <primary sortas="b-fdisk">fdisk</primary>
 331           </indexterm>
 332         </listitem>
 333       </varlistentry>
 334
 335       <varlistentry id="findfs">
 336         <term><command>findfs</command></term>
 337         <listitem>
 338           <para>Finds a file system by label or Universally Unique Identifier
 339           (UUID)</para>
 340           <indexterm zone="ch-system-util-linux-ng findfs">
 341             <primary sortas="b-findfs">findfs</primary>
 342           </indexterm>
 343         </listitem>
 344       </varlistentry>
 345
 346       <varlistentry id="flock">
 347         <term><command>flock</command></term>
 348         <listitem>
 349           <para>Acquires a file lock and then executes a command with the lock
 350           held</para>
 351           <indexterm zone="ch-system-util-linux-ng flock">
 352             <primary sortas="b-flock">flock</primary>
 353           </indexterm>
 354         </listitem>
 355       </varlistentry>
 356
 357       <varlistentry id="fsck">
 358         <term><command>fsck</command></term>
 359         <listitem>
 360           <para>Is used to check, and optionally repair, file systems</para>
 361           <indexterm zone="ch-system-util-linux-ng fsck">
 362             <primary sortas="b-fsck">fsck</primary>
 363           </indexterm>
 364         </listitem>
 365       </varlistentry>
 366
 367       <varlistentry id="fsck.cramfs">
 368         <term><command>fsck.cramfs</command></term>
 369         <listitem>
 370           <para>Performs a consistency check on the Cramfs file system on the
 371           given device</para>
 372           <indexterm zone="ch-system-util-linux-ng fsck.cramfs">
 373             <primary sortas="b-fsck.cramfs">fsck.cramfs</primary>
 374           </indexterm>
 375         </listitem>
 376       </varlistentry>
 377
 378       <varlistentry id="fsck.minix">
 379         <term><command>fsck.minix</command></term>
 380         <listitem>
 381           <para>Performs a consistency check on the Minix file system on the
 382           given device</para>
 383           <indexterm zone="ch-system-util-linux-ng fsck.minix">
 384             <primary sortas="b-fsck.minix">fsck.minix</primary>
 385           </indexterm>
 386         </listitem>
 387       </varlistentry>
 388
 389       <varlistentry id="getopt">
 390         <term><command>getopt</command></term>
 391         <listitem>
 392           <para>Parses options in the given command line</para>
 393           <indexterm zone="ch-system-util-linux-ng getopt">
 394             <primary sortas="b-getopt">getopt</primary>
 395           </indexterm>
 396         </listitem>
 397       </varlistentry>
 398
 399       <varlistentry id="hexdump">
 400         <term><command>hexdump</command></term>
 401         <listitem>
 402           <para>Dumps the given file in hexadecimal or in another given
 403           format</para>
 404           <indexterm zone="ch-system-util-linux-ng hexdump">
 405             <primary sortas="b-hexdump">hexdump</primary>
 406           </indexterm>
 407         </listitem>
 408       </varlistentry>
 409
 410       <varlistentry id="hwclock">
 411         <term><command>hwclock</command></term>
 412         <listitem>
 413           <para>Reads or sets the system's hardware clock, also called
 414           the Real-Time Clock (RTC) or Basic Input-Output System (BIOS)
 415           clock</para>
 416           <indexterm zone="ch-system-util-linux-ng hwclock">
 417             <primary sortas="b-hwclock">hwclock</primary>
 418           </indexterm>
 419         </listitem>
 420       </varlistentry>
 421
 422       <varlistentry id="i386">
 423         <term><command>i386</command></term>
 424         <listitem>
 425           <para>A symbolic link to setarch</para>
 426           <indexterm zone="ch-system-util-linux-ng i386">
 427             <primary sortas="b-i386">i386</primary>
 428           </indexterm>
 429         </listitem>
 430       </varlistentry>
 431
 432       <varlistentry id="ionice">
 433         <term><command>ionice</command></term>
 434         <listitem>
 435           <para>Gets or sets the io scheduling class and priority for a program</para>
 436           <indexterm zone="ch-system-util-linux-ng ionice">
 437             <primary sortas="b-ionice">ionice</primary>
 438           </indexterm>
 439         </listitem>
 440       </varlistentry>
 441
 442       <varlistentry id="ipcmk">
 443         <term><command>ipcmk</command></term>
 444         <listitem>
 445           <para>Creates various IPC resources</para>
 446           <indexterm zone="ch-system-util-linux-ng ipcmk">
 447             <primary sortas="b-ipcmk">ipcmk</primary>
 448           </indexterm>
 449         </listitem>
 450       </varlistentry>
 451
 452       <varlistentry id="ipcrm">
 453         <term><command>ipcrm</command></term>
 454         <listitem>
 455           <para>Removes the given Inter-Process Communication (IPC) resource</para>
 456           <indexterm zone="ch-system-util-linux-ng ipcrm">
 457             <primary sortas="b-ipcrm">ipcrm</primary>
 458           </indexterm>
 459         </listitem>
 460       </varlistentry>
 461
 462       <varlistentry id="ipcs">
 463         <term><command>ipcs</command></term>
 464         <listitem>
 465           <para>Provides IPC status information</para>
 466           <indexterm zone="ch-system-util-linux-ng ipcs">
 467             <primary sortas="b-ipcs">ipcs</primary>
 468           </indexterm>
 469         </listitem>
 470       </varlistentry>
 471
 472       <varlistentry id="isosize">
 473         <term><command>isosize</command></term>
 474         <listitem>
 475           <para>Reports the size of an iso9660 file system</para>
 476           <indexterm zone="ch-system-util-linux-ng isosize">
 477             <primary sortas="b-isosize">isosize</primary>
 478           </indexterm>
 479         </listitem>
 480       </varlistentry>
 481
 482       <varlistentry id="ldattach">
 483         <term><command>ldattach</command></term>
 484         <listitem>
 485           <para>Attaches a line discipline to a serial line</para>
 486           <indexterm zone="ch-system-util-linux-ng ldattach">
 487             <primary sortas="b-ldattach">ldattach</primary>
 488           </indexterm>
 489         </listitem>
 490       </varlistentry>
 491
 492       <varlistentry id="line">
 493         <term><command>line</command></term>
 494         <listitem>
 495           <para>Copies a single line</para>
 496           <indexterm zone="ch-system-util-linux-ng line">
 497             <primary sortas="b-line">line</primary>
 498           </indexterm>
 499         </listitem>
 500       </varlistentry>
 501
 502       <varlistentry id="linux32">
 503         <term><command>linux32</command></term>
 504         <listitem>
 505           <para>A symbolic link to setarch</para>
 506           <indexterm zone="ch-system-util-linux-ng linux32">
 507             <primary sortas="b-linux32">linux32</primary>
 508           </indexterm>
 509         </listitem>
 510       </varlistentry>
 511
 512       <varlistentry id="linux64">
 513         <term><command>linux64</command></term>
 514         <listitem>
 515           <para>A symbolic link to setarch</para>
 516           <indexterm zone="ch-system-util-linux-ng linux64">
 517             <primary sortas="b-linux64">linux64</primary>
 518           </indexterm>
 519         </listitem>
 520       </varlistentry>
 521
 522       <varlistentry id="logger">
 523         <term><command>logger</command></term>
 524         <listitem>
 525           <para>Enters the given message into the system log</para>
 526           <indexterm zone="ch-system-util-linux-ng logger">
 527             <primary sortas="b-logger">logger</primary>
 528           </indexterm>
 529         </listitem>
 530       </varlistentry>
 531
 532       <varlistentry id="look">
 533         <term><command>look</command></term>
 534         <listitem>
 535           <para>Displays lines that begin with the given string</para>
 536           <indexterm zone="ch-system-util-linux-ng look">
 537             <primary sortas="b-look">look</primary>
 538           </indexterm>
 539         </listitem>
 540       </varlistentry>
 541
 542       <varlistentry id="losetup">
 543         <term><command>losetup</command></term>
 544         <listitem>
 545           <para>Sets up and controls loop devices</para>
 546           <indexterm zone="ch-system-util-linux-ng losetup">
 547             <primary sortas="b-losetup">losetup</primary>
 548           </indexterm>
 549         </listitem>
 550       </varlistentry>
 551
 552       <varlistentry id="lscpu">
 553         <term><command>lscpu</command></term>
 554         <listitem>
 555           <para>Prints CPU architechture information</para>
 556           <indexterm zone="ch-system-util-linux-ng lscpu">
 557             <primary sortas="b-lscpu">lscpu</primary>
 558           </indexterm>
 559         </listitem>
 560       </varlistentry>
 561
 562       <varlistentry id="mcookie">
 563         <term><command>mcookie</command></term>
 564         <listitem>
 565           <para>Generates magic cookies (128-bit random hexadecimal numbers) for
 566           <command>xauth</command></para>
 567           <indexterm zone="ch-system-util-linux-ng mcookie">
 568             <primary sortas="b-mcookie">mcookie</primary>
 569           </indexterm>
 570         </listitem>
 571       </varlistentry>
 572
 573       <varlistentry id="mkfs">
 574         <term><command>mkfs</command></term>
 575         <listitem>
 576           <para>Builds a file system on a device (usually a hard disk
 577           partition)</para>
 578           <indexterm zone="ch-system-util-linux-ng mkfs">
 579             <primary sortas="b-mkfs">mkfs</primary>
 580           </indexterm>
 581         </listitem>
 582       </varlistentry>
 583
 584       <varlistentry id="mkfs.bfs">
 585         <term><command>mkfs.bfs</command></term>
 586         <listitem>
 587           <para>Creates a Santa Cruz Operations (SCO) bfs file system</para>
 588           <indexterm zone="ch-system-util-linux-ng mkfs.bfs">
 589             <primary sortas="b-mkfs.bfs">mkfs.bfs</primary>
 590           </indexterm>
 591         </listitem>
 592       </varlistentry>
 593
 594       <varlistentry id="mkfs.cramfs">
 595         <term><command>mkfs.cramfs</command></term>
 596         <listitem>
 597           <para>Creates a cramfs file system</para>
 598           <indexterm zone="ch-system-util-linux-ng mkfs.cramfs">
 599             <primary sortas="b-mkfs.cramfs">mkfs.cramfs</primary>
 600           </indexterm>
 601         </listitem>
 602       </varlistentry>
 603
 604       <varlistentry id="mkfs.minix">
 605         <term><command>mkfs.minix</command></term>
 606         <listitem>
 607           <para>Creates a Minix file system</para>
 608           <indexterm zone="ch-system-util-linux-ng mkfs.minix">
 609             <primary sortas="b-mkfs.minix">mkfs.minix</primary>
 610           </indexterm>
 611         </listitem>
 612       </varlistentry>
 613
 614       <varlistentry id="mkswap">
 615         <term><command>mkswap</command></term>
 616         <listitem>
 617           <para>Initializes the given device or file to be used as a swap
 618           area</para>
 619           <indexterm zone="ch-system-util-linux-ng mkswap">
 620             <primary sortas="b-mkswap">mkswap</primary>
 621           </indexterm>
 622         </listitem>
 623       </varlistentry>
 624
 625       <varlistentry id="more">
 626         <term><command>more</command></term>
 627         <listitem>
 628           <para>A filter for paging through text one screen at a time</para>
 629           <indexterm zone="ch-system-util-linux-ng more">
 630             <primary sortas="b-more">more</primary>
 631           </indexterm>
 632         </listitem>
 633       </varlistentry>
 634
 635       <varlistentry id="mount">
 636         <term><command>mount</command></term>
 637         <listitem>
 638           <para>Attaches the file system on the given device to a specified
 639           directory in the file-system tree</para>
 640           <indexterm zone="ch-system-util-linux-ng mount">
 641             <primary sortas="b-mount">mount</primary>
 642           </indexterm>
 643         </listitem>
 644       </varlistentry>
 645
 646       <varlistentry id="namei">
 647         <term><command>namei</command></term>
 648         <listitem>
 649           <para>Shows the symbolic links in the given pathnames</para>
 650           <indexterm zone="ch-system-util-linux-ng namei">
 651             <primary sortas="b-namei">namei</primary>
 652           </indexterm>
 653         </listitem>
 654       </varlistentry>
 655
 656       <varlistentry id="partx">
 657         <term><command>partx</command></term>
 658         <listitem>
 659           <para>Tells the kernel about the presence and numbering of on-disk
 660           partitions</para>
 661           <indexterm zone="ch-system-util-linux-ng partx">
 662             <primary sortas="b-partx">partx</primary>
 663           </indexterm>
 664         </listitem>
 665       </varlistentry>
 666
 667       <varlistentry id="pg">
 668         <term><command>pg</command></term>
 669         <listitem>
 670           <para>Displays a text file one screen full at a time</para>
 671           <indexterm zone="ch-system-util-linux-ng pg">
 672             <primary sortas="b-pg">pg</primary>
 673           </indexterm>
 674         </listitem>
 675       </varlistentry>
 676
 677       <varlistentry id="pivot_root">
 678         <term><command>pivot_root</command></term>
 679         <listitem>
 680           <para>Makes the given file system the new root file system of the
 681           current process</para>
 682           <indexterm zone="ch-system-util-linux-ng pivot_root">
 683             <primary sortas="b-pivot_root">pivot_root</primary>
 684           </indexterm>
 685         </listitem>
 686       </varlistentry>
 687
 688       <varlistentry id="readprofile">
 689         <term><command>readprofile</command></term>
 690         <listitem>
 691           <para>Reads kernel profiling information</para>
 692           <indexterm zone="ch-system-util-linux-ng readprofile">
 693             <primary sortas="b-readprofile">readprofile</primary>
 694           </indexterm>
 695         </listitem>
 696       </varlistentry>
 697
 698       <varlistentry id="rename">
 699         <term><command>rename</command></term>
 700         <listitem>
 701           <para>Renames the given files, replacing a given string with
 702           another</para>
 703           <indexterm zone="ch-system-util-linux-ng rename">
 704             <primary sortas="b-rename">rename</primary>
 705           </indexterm>
 706         </listitem>
 707       </varlistentry>
 708
 709       <varlistentry id="renice">
 710         <term><command>renice</command></term>
 711         <listitem>
 712           <para>Alters the priority of running processes</para>
 713           <indexterm zone="ch-system-util-linux-ng renice">
 714             <primary sortas="b-renice">renice</primary>
 715           </indexterm>
 716         </listitem>
 717       </varlistentry>
 718
 719       <varlistentry id="rev">
 720         <term><command>rev</command></term>
 721         <listitem>
 722           <para>Reverses the lines of a given file</para>
 723           <indexterm zone="ch-system-util-linux-ng rev">
 724             <primary sortas="b-rev">rev</primary>
 725           </indexterm>
 726         </listitem>
 727       </varlistentry>
 728
 729       <varlistentry id="rtcwake">
 730         <term><command>rtcwake</command></term>
 731         <listitem>
 732           <para>Used to enter a system sleep state until specified wakeup
 733           time</para>
 734           <indexterm zone="ch-system-util-linux-ng rtcwake">
 735             <primary sortas="b-rtcwake">rtcwake</primary>
 736           </indexterm>
 737         </listitem>
 738       </varlistentry>
 739
 740       <varlistentry id="script">
 741         <term><command>script</command></term>
 742         <listitem>
 743           <para>Makes a typescript of a terminal session</para>
 744           <indexterm zone="ch-system-util-linux-ng script">
 745             <primary sortas="b-script">script</primary>
 746           </indexterm>
 747         </listitem>
 748       </varlistentry>
 749
 750       <varlistentry id="scriptreplay">
 751         <term><command>scriptreplay</command></term>
 752         <listitem>
 753           <para>Plays back typescripts using timing information</para>
 754           <indexterm zone="ch-system-util-linux-ng scriptreplay">
 755             <primary sortas="b-scriptreplay">scriptreplay</primary>
 756           </indexterm>
 757         </listitem>
 758       </varlistentry>
 759
 760       <varlistentry id="setarch">
 761         <term><command>setarch</command></term>
 762         <listitem>
 763           <para>Changes reported architecture in a new program environment and
 764           sets personality flags</para>
 765           <indexterm zone="ch-system-util-linux-ng setarch">
 766             <primary sortas="b-setarch">setarch</primary>
 767           </indexterm>
 768         </listitem>
 769       </varlistentry>
 770
 771       <varlistentry id="setsid">
 772         <term><command>setsid</command></term>
 773         <listitem>
 774           <para>Runs the given program in a new session</para>
 775           <indexterm zone="ch-system-util-linux-ng setsid">
 776             <primary sortas="b-setsid">setsid</primary>
 777           </indexterm>
 778         </listitem>
 779       </varlistentry>
 780
 781       <varlistentry id="setterm">
 782         <term><command>setterm</command></term>
 783         <listitem>
 784           <para>Sets terminal attributes</para>
 785           <indexterm zone="ch-system-util-linux-ng setterm">
 786             <primary sortas="b-setterm">setterm</primary>
 787           </indexterm>
 788         </listitem>
 789       </varlistentry>
 790
 791       <varlistentry id="sfdisk">
 792         <term><command>sfdisk</command></term>
 793         <listitem>
 794           <para>A disk partition table manipulator</para>
 795           <indexterm zone="ch-system-util-linux-ng sfdisk">
 796             <primary sortas="b-sfdisk">sfdisk</primary>
 797           </indexterm>
 798         </listitem>
 799       </varlistentry>
 800
 801       <varlistentry id="swapoff">
 802         <term><command>swapoff</command></term>
 803         <listitem>
 804           <para>Disables devices and files for paging and swapping</para>
 805           <indexterm zone="ch-system-util-linux-ng swapoff">
 806             <primary sortas="b-swapoff">swapoff</primary>
 807           </indexterm>
 808         </listitem>
 809       </varlistentry>
 810
 811       <varlistentry id="swapon">
 812         <term><command>swapon</command></term>
 813         <listitem>
 814           <para>Enables devices and files for paging and swapping and
 815           lists the devices and files currently in use</para>
 816           <indexterm zone="ch-system-util-linux-ng swapon">
 817             <primary sortas="b-swapon">swapon</primary>
 818           </indexterm>
 819         </listitem>
 820       </varlistentry>
 821
 822       <varlistentry id="switch_root">
 823         <term><command>switch_root</command></term>
 824         <listitem>
 825           <para>Switches to another filesystem as the root of the mount tree</para>
 826           <indexterm zone="ch-system-util-linux-ng switch_root">
 827             <primary sortas="b-switch_root">switch_root</primary>
 828           </indexterm>
 829         </listitem>
 830       </varlistentry>
 831
 832       <varlistentry id="tailf">
 833         <term><command>tailf</command></term>
 834         <listitem>
 835           <para>Tracks the growth of a log file. Displays the last 10 lines
 836           of a log file, then continues displaying any new entries in the
 837           log file as they are created</para>
 838           <indexterm zone="ch-system-util-linux-ng tailf">
 839             <primary sortas="b-tailf">tailf</primary>
 840           </indexterm>
 841         </listitem>
 842       </varlistentry>
 843
 844       <varlistentry id="taskset">
 845         <term><command>taskset</command></term>
 846         <listitem>
 847           <para>Retrieves or sets a process' CPU affinity</para>
 848           <indexterm zone="ch-system-util-linux-ng taskset">
 849             <primary sortas="b-taskset">taskset</primary>
 850           </indexterm>
 851         </listitem>
 852       </varlistentry>
 853
 854       <varlistentry id="tunelp">
 855         <term><command>tunelp</command></term>
 856         <listitem>
 857           <para>Tunes the parameters of the line printer</para>
 858           <indexterm zone="ch-system-util-linux-ng tunelp">
 859             <primary sortas="b-tunelp">tunelp</primary>
 860           </indexterm>
 861         </listitem>
 862       </varlistentry>
 863
 864       <varlistentry id="ul">
 865         <term><command>ul</command></term>
 866         <listitem>
 867           <para>A filter for translating underscores into escape sequences
 868           indicating underlining for the terminal in use</para>
 869           <indexterm zone="ch-system-util-linux-ng ul">
 870             <primary sortas="b-ul">ul</primary>
 871           </indexterm>
 872         </listitem>
 873       </varlistentry>
 874
 875       <varlistentry id="umount">
 876         <term><command>umount</command></term>
 877         <listitem>
 878           <para>Disconnects a file system from the system's file tree</para>
 879           <indexterm zone="ch-system-util-linux-ng umount">
 880             <primary sortas="b-umount">umount</primary>
 881           </indexterm>
 882         </listitem>
 883       </varlistentry>
 884
 885       <varlistentry id="uuidd">
 886         <term><command>uuidd</command></term>
 887         <listitem>
 888           <para>A daemon used by the UUID library to generate time-based
 889           UUIDs in a secure and guranteed-unique fashion.</para>
 890           <indexterm zone="ch-system-util-linux-ng uuidd">
 891             <primary sortas="b-uuidd">uuidd</primary>
 892           </indexterm>
 893         </listitem>
 894       </varlistentry>
 895
 896       <varlistentry id="uuidgen">
 897         <term><command>uuidgen</command></term>
 898         <listitem>
 899           <para>Creates new UUIDs. Each new UUID can reasonably be considered
 900           unique among all UUIDs created, on the local system and on other
 901           systems, in the past and in the future</para>
 902           <indexterm zone="ch-system-util-linux-ng uuidgen">
 903             <primary sortas="b-uuidgen">uuidgen</primary>
 904           </indexterm>
 905         </listitem>
 906       </varlistentry>
 907
 908       <varlistentry id="wall">
 909         <term><command>wall</command></term>
 910         <listitem>
 911           <para>Displays the contents of a file or, by default, its standard
 912           input, on the terminals of all currently logged in users</para>
 913           <indexterm zone="ch-system-util-linux-ng wall">
 914             <primary sortas="b-wall">wall</primary>
 915           </indexterm>
 916         </listitem>
 917       </varlistentry>
 918
 919       <varlistentry id="whereis">
 920         <term><command>whereis</command></term>
 921         <listitem>
 922           <para>Reports the location of the binary, source, and man page
 923           for the given command</para>
 924           <indexterm zone="ch-system-util-linux-ng whereis">
 925             <primary sortas="b-whereis">whereis</primary>
 926           </indexterm>
 927         </listitem>
 928       </varlistentry>
 929
 930       <varlistentry id="write">
 931         <term><command>write</command></term>
 932         <listitem>
 933           <para>Sends a message to the given user <emphasis>if</emphasis> that
 934           user has not disabled receipt of such messages</para>
 935           <indexterm zone="ch-system-util-linux-ng write">
 936             <primary sortas="b-write">write</primary>
 937           </indexterm>
 938         </listitem>
 939       </varlistentry>
 940
 941       <varlistentry id="libblkid">
 942         <term><filename class="libraryfile">libblkid</filename></term>
 943         <listitem>
 944           <para>Contains routines for device identification and token
 945           extraction</para>
 946           <indexterm zone="ch-system-util-linux-ng libblkid">
 947             <primary sortas="c-libblkid">libblkid</primary>
 948           </indexterm>
 949         </listitem>
 950       </varlistentry>
 951
 952       <varlistentry id="libuuid">
 953         <term><filename class="libraryfile">libuuid</filename></term>
 954         <listitem>
 955           <para>Contains routines for generating unique identifiers for objects
 956           that may be accessible beyond the local system</para>
 957           <indexterm zone="ch-system-util-linux-ng libuuid">
 958             <primary sortas="c-libuuid">libuuid</primary>
 959           </indexterm>
 960         </listitem>
 961       </varlistentry>
 962
 963     </variablelist>
 964
 965   </sect2>
 966
 967 </sect1>