Ignore:
Timestamp:
12/21/2004 07:38:32 PM (19 years ago)
Author:
Manuel Canales Esparcia <manuel@…>
Branches:
10.0, 10.0-rc1, 10.1, 10.1-rc1, 11.0, 11.0-rc1, 11.0-rc2, 11.0-rc3, 11.1, 11.1-rc1, 11.2, 11.2-rc1, 11.3, 11.3-rc1, 12.0, 12.0-rc1, 12.1, 12.1-rc1, 6.1, 6.1.1, 6.3, 6.4, 6.5, 6.6, 6.7, 6.8, 7.0, 7.1, 7.2, 7.3, 7.4, 7.5, 7.5-systemd, 7.6, 7.6-systemd, 7.7, 7.7-systemd, 7.8, 7.8-systemd, 7.9, 7.9-systemd, 8.0, 8.1, 8.2, 8.3, 8.4, 9.0, 9.1, arm, bdubbs/gcc13, ml-11.0, multilib, renodr/libudev-from-systemd, s6-init, trunk, xry111/arm64, xry111/arm64-12.0, xry111/clfs-ng, xry111/lfs-next, xry111/loongarch, xry111/loongarch-12.0, xry111/loongarch-12.1, xry111/mips64el, xry111/pip3, xry111/rust-wip-20221008, xry111/update-glibc
Children:
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Parents:
aaa3260
Message:

Removed the text in chapter 06.

git-svn-id: ​http://svn.linuxfromscratch.org/LFS/trunk/BOOK@4446 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

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  • chapter06/util-linux.xml

    raaa3260 r3f0c882  
    1111
    1212<sect2 role="package"><title/>
    13 <para>The Util-linux package contains miscellaneous utility programs. Among
    14 them are utilities for handling file systems, consoles, partitions, and
    15 messages.</para>
    1613
    1714<segmentedlist>
    … …  
    2118</segmentedlist>
    2219
    23 <segmentedlist>
    24 <segtitle>Util-linux installation depends on</segtitle>
    25 <seglistitem><seg>Bash, Binutils, Coreutils,
    26 Diffutils, GCC, Gettext, Glibc, Grep, Make, Ncurses, Sed, Zlib</seg></seglistitem>
    27 </segmentedlist>
    2820</sect2>
    2921
    … …  
    3123<title>FHS compliance notes</title>
    3224
    33 <para>The FHS recommends that we use <filename class="directory">/var/lib/hwclock</filename>,
    34 instead of the usual <filename class="directory">/etc</filename>, as the location for the
    35 <filename>adjtime</filename> file. To make the <command>hwclock</command>
    36 program FHS-compliant, run the following:</para>
     25<para>Issue a sed sustitution:</para>
    3726
    3827<screen><userinput>sed -i 's@etc/adjtime@var/lib/hwclock/adjtime@g' hwclock/hwclock.c
    … …  
    5241<screen><userinput>make HAVE_KILL=yes HAVE_SLN=yes</userinput></screen>
    5342
    54 <para>The meaning of the make parameters:</para>
    55 
    56 <variablelist>
    57 <varlistentry>
    58 <term><parameter>HAVE_KILL=yes</parameter></term>
    59 <listitem><para>This prevents the
    60 <command>kill</command> program (already installed by Procps) from being
    61 built and installed again.</para></listitem>
    62 </varlistentry>
    63 
    64 <varlistentry>
    65 <term><parameter>HAVE_SLN=yes</parameter></term>
    66 <listitem><para>This prevents the
    67 <command>sln</command> program (a statically linked
    68 <command>ln</command> already installed by Glibc) from being built and
    69 installed again.</para></listitem>
    70 </varlistentry>
    71 </variablelist>
    72 
    7343<para>Now install the package:</para>
    7444
    … …  
    8050<sect2 id="contents-utillinux" role="content"><title>Contents of Util-linux</title>
    8151
    82 <segmentedlist>
    83 <segtitle>Installed programs</segtitle>
    84 <seglistitem><seg>agetty, arch, blockdev, cal, cfdisk, chkdupexe, col, colcrt,
    85 colrm, column, ctrlaltdel, cytune, ddate, dmesg, elvtune, fdformat, fdisk,
    86 fsck.cramfs, fsck.minix, getopt, hexdump, hwclock, ipcrm, ipcs, isosize, line,
    87 logger, look, losetup, mcookie, mkfs, mkfs.bfs, mkfs.cramfs, mkfs.minix, mkswap,
    88 more, mount, namei, pg, pivot_root, ramsize (link to rdev), raw, rdev, readprofile,
    89 rename, renice, rev, rootflags (link to rdev), script, setfdprm, setsid, setterm,
    90 sfdisk, swapoff (link to swapon), swapon, tunelp, ul, umount, vidmode (link to rdev),
    91 whereis and write</seg></seglistitem>
    92 </segmentedlist>
    93 
    94 <variablelist><title>Short descriptions</title>
    95 
    96 <varlistentry id="agetty">
    97 <term><command>agetty</command></term>
    98 <listitem>
    99 <indexterm zone="ch-system-util-linux agetty"><primary sortas="b-agetty">agetty</primary></indexterm>
    100 <para>opens a tty port, prompts for a login name,
    101 and then invokes the <command>login</command> program.</para>
    102 </listitem>
    103 </varlistentry>
    104 
    105 <varlistentry id="arch">
    106 <term><command>arch</command></term>
    107 <listitem>
    108 <indexterm zone="ch-system-util-linux arch"><primary sortas="b-arch">arch</primary></indexterm>
    109 <para>reports the machine's architecture.</para>
    110 </listitem>
    111 </varlistentry>
    112 
    113 <varlistentry id="blockdev">
    114 <term><command>blockdev</command></term>
    115 <listitem>
    116 <indexterm zone="ch-system-util-linux blockdev"><primary sortas="b-blockdev">blockdev</primary></indexterm>
    117 <para>allows you to call block device ioctls from the command line.</para>
    118 </listitem>
    119 </varlistentry>
    120 
    121 <varlistentry id="cal">
    122 <term><command>cal</command></term>
    123 <listitem>
    124 <indexterm zone="ch-system-util-linux cal"><primary sortas="b-cal">cal</primary></indexterm>
    125 <para>displays a simple calendar.</para>
    126 </listitem>
    127 </varlistentry>
    128 
    129 <varlistentry id="cfdisk">
    130 <term><command>cfdisk</command></term>
    131 <listitem>
    132 <indexterm zone="ch-system-util-linux cfdisk"><primary sortas="b-cfdisk">cfdisk</primary></indexterm>
    133 <para>is used to manipulate the partition table of the given device.</para>
    134 </listitem>
    135 </varlistentry>
    136 
    137 <varlistentry id="chkdupexe">
    138 <term><command>chkdupexe</command></term>
    139 <listitem>
    140 <indexterm zone="ch-system-util-linux chkdupexe"><primary sortas="b-chkdupexe">chkdupexe</primary></indexterm>
    141 <para>finds duplicate executables.</para>
    142 </listitem>
    143 </varlistentry>
    144 
    145 <varlistentry id="col">
    146 <term><command>col</command></term>
    147 <listitem>
    148 <indexterm zone="ch-system-util-linux col"><primary sortas="b-col">col</primary></indexterm>
    149 <para>filters out reverse line feeds.</para>
    150 </listitem>
    151 </varlistentry>
    152 
    153 <varlistentry id="colcrt">
    154 <term><command>colcrt</command></term>
    155 <listitem>
    156 <indexterm zone="ch-system-util-linux colcrt"><primary sortas="b-colcrt">colcrt</primary></indexterm>
    157 <para>is used to filter nroff output for terminals
    158 that lack some capabilities such as overstriking and half-lines.</para>
    159 </listitem>
    160 </varlistentry>
    161 
    162 <varlistentry id="colrm">
    163 <term><command>colrm</command></term>
    164 <listitem>
    165 <indexterm zone="ch-system-util-linux colrm"><primary sortas="b-colrm">colrm</primary></indexterm>
    166 <para>filters out the given columns.</para>
    167 </listitem>
    168 </varlistentry>
    169 
    170 <varlistentry id="column">
    171 <term><command>column</command></term>
    172 <listitem>
    173 <indexterm zone="ch-system-util-linux column"><primary sortas="b-column">column</primary></indexterm>
    174 <para>formats a given file into multiple columns.</para>
    175 </listitem>
    176 </varlistentry>
    177 
    178 <varlistentry id="ctrlaltdel">
    179 <term><command>ctrlaltdel</command></term>
    180 <listitem>
    181 <indexterm zone="ch-system-util-linux ctrlaltdel"><primary sortas="b-ctrlaltdel">ctrlaltdel</primary></indexterm>
    182 <para>sets the function of the Ctrl+Alt+Del key combination to a hard or a
    183 soft reset.</para>
    184 </listitem>
    185 </varlistentry>
    186 
    187 <varlistentry id="cytune">
    188 <term><command>cytune</command></term>
    189 <listitem>
    190 <indexterm zone="ch-system-util-linux cytune"><primary sortas="b-cytune">cytune</primary></indexterm>
    191 <para>was used to tune the parameters of the
    192 serial line drivers for Cyclades cards.</para>
    193 </listitem>
    194 </varlistentry>
    195 
    196 <varlistentry id="ddate">
    197 <term><command>ddate</command></term>
    198 <listitem>
    199 <indexterm zone="ch-system-util-linux ddate"><primary sortas="b-ddate">ddate</primary></indexterm>
    200 <para>gives the Discordian date, or converts the
    201 given Gregorian date to a Discordian one.</para>
    202 </listitem>
    203 </varlistentry>
    204 
    205 <varlistentry id="dmesg">
    206 <term><command>dmesg</command></term>
    207 <listitem>
    208 <indexterm zone="ch-system-util-linux dmesg"><primary sortas="b-dmesg">dmesg</primary></indexterm>
    209 <para>dumps the kernel boot messages.</para>
    210 </listitem>
    211 </varlistentry>
    212 
    213 <varlistentry id="elvtune">
    214 <term><command>elvtune</command></term>
    215 <listitem>
    216 <indexterm zone="ch-system-util-linux elvtune"><primary sortas="b-elvtune">elvtune</primary></indexterm>
    217 <para>can be used to tune the performance
    218 and interactivity of a block device.</para>
    219 </listitem>
    220 </varlistentry>
    221 
    222 <varlistentry id="fdformat">
    223 <term><command>fdformat</command></term>
    224 <listitem>
    225 <indexterm zone="ch-system-util-linux fdformat"><primary sortas="b-fdformat">fdformat</primary></indexterm>
    226 <para>low-level formats a floppy disk.</para>
    227 </listitem>
    228 </varlistentry>
    229 
    230 <varlistentry id="fdisk">
    231 <term><command>fdisk</command></term>
    232 <listitem>
    233 <indexterm zone="ch-system-util-linux fdisk"><primary sortas="b-fdisk">fdisk</primary></indexterm>
    234 <para>could be used to manipulate the partition table of the given device.</para>
    235 </listitem>
    236 </varlistentry>
    237 
    238 <varlistentry id="fsck.cramfs">
    239 <term><command>fsck.cramfs</command></term>
    240 <listitem>
    241 <indexterm zone="ch-system-util-linux fsck.cramfs"><primary sortas="b-fsck.cramfs">fsck.cramfs</primary></indexterm>
    242 <para>performs a consistency check on the
    243 Cramfs file system on the given device.</para>
    244 </listitem>
    245 </varlistentry>
    246 
    247 <varlistentry id="fsck.minix">
    248 <term><command>fsck.minix</command></term>
    249 <listitem>
    250 <indexterm zone="ch-system-util-linux fsck.minix"><primary sortas="b-fsck.minix">fsck.minix</primary></indexterm>
    251 <para>performs a consistency check on the
    252 Minix file system on the given device.</para>
    253 </listitem>
    254 </varlistentry>
    255 
    256 <varlistentry id="getopt">
    257 <term><command>getopt</command></term>
    258 <listitem>
    259 <indexterm zone="ch-system-util-linux getopt"><primary sortas="b-getopt">getopt</primary></indexterm>
    260 <para>parses options in the given command line.</para>
    261 </listitem>
    262 </varlistentry>
    263 
    264 <varlistentry id="hexdump">
    265 <term><command>hexdump</command></term>
    266 <listitem>
    267 <indexterm zone="ch-system-util-linux hexdump"><primary sortas="b-hexdump">hexdump</primary></indexterm>
    268 <para>dumps the given file in hexadecimal, or in another given format.</para>
    269 </listitem>
    270 </varlistentry>
    271 
    272 <varlistentry id="hwclock">
    273 <term><command>hwclock</command></term>
    274 <listitem>
    275 <indexterm zone="ch-system-util-linux hwclock"><primary sortas="b-hwclock">hwclock</primary></indexterm>
    276 <para>is used to read or set the system's hardware clock, also called the RTC
    277 (Real-Time Clock) or BIOS (Basic Input-Output System) clock.</para>
    278 </listitem>
    279 </varlistentry>
    280 
    281 <varlistentry id="ipcrm">
    282 <term><command>ipcrm</command></term>
    283 <listitem>
    284 <indexterm zone="ch-system-util-linux ipcrm"><primary sortas="b-ipcrm">ipcrm</primary></indexterm>
    285 <para>removes the given IPC resource.</para>
    286 </listitem>
    287 </varlistentry>
    288 
    289 <varlistentry id="ipcs">
    290 <term><command>ipcs</command></term>
    291 <listitem>
    292 <indexterm zone="ch-system-util-linux ipcs"><primary sortas="b-ipcs">ipcs</primary></indexterm>
    293 <para>provides IPC status information.</para>
    294 </listitem>
    295 </varlistentry>
    296 
    297 <varlistentry id="isosize">
    298 <term><command>isosize</command></term>
    299 <listitem>
    300 <indexterm zone="ch-system-util-linux isosize"><primary sortas="b-isosize">isosize</primary></indexterm>
    301 <para>reports the size of an iso9660 file system.</para>
    302 </listitem>
    303 </varlistentry>
    304 
    305 <varlistentry id="line">
    306 <term><command>line</command></term>
    307 <listitem>
    308 <indexterm zone="ch-system-util-linux line"><primary sortas="b-line">line</primary></indexterm>
    309 <para>copies a single line.</para>
    310 </listitem>
    311 </varlistentry>
    312 
    313 <varlistentry id="logger">
    314 <term><command>logger</command></term>
    315 <listitem>
    316 <indexterm zone="ch-system-util-linux logger"><primary sortas="b-logger">logger</primary></indexterm>
    317 <para>enters the given message into the system log.</para>
    318 </listitem>
    319 </varlistentry>
    320 
    321 <varlistentry id="look">
    322 <term><command>look</command></term>
    323 <listitem>
    324 <indexterm zone="ch-system-util-linux look"><primary sortas="b-look">look</primary></indexterm>
    325 <para>displays lines that begin with the given string.</para>
    326 </listitem>
    327 </varlistentry>
    328 
    329 <varlistentry id="losetup">
    330 <term><command>losetup</command></term>
    331 <listitem>
    332 <indexterm zone="ch-system-util-linux losetup"><primary sortas="b-losetup">losetup</primary></indexterm>
    333 <para>is used to set up and control loop devices.</para>
    334 </listitem>
    335 </varlistentry>
    336 
    337 <varlistentry id="mcookie">
    338 <term><command>mcookie</command></term>
    339 <listitem>
    340 <indexterm zone="ch-system-util-linux mcookie"><primary sortas="b-mcookie">mcookie</primary></indexterm>
    341 <para>generates magic cookies, 128-bit random hexadecimal numbers,
    342 for <command>xauth</command>.</para>
    343 </listitem>
    344 </varlistentry>
    345 
    346 <varlistentry id="mkfs">
    347 <term><command>mkfs</command></term>
    348 <listitem>
    349 <indexterm zone="ch-system-util-linux mkfs"><primary sortas="b-mkfs">mkfs</primary></indexterm>
    350 <para>is used to build a file system on a device
    351 (usually a hard disk partition).</para>
    352 </listitem>
    353 </varlistentry>
    354 
    355 <varlistentry id="mkfs.bfs">
    356 <term><command>mkfs.bfs</command></term>
    357 <listitem>
    358 <indexterm zone="ch-system-util-linux mkfs.bfs"><primary sortas="b-mkfs.bfs">mkfs.bfs</primary></indexterm>
    359 <para>creates an SCO (Santa Cruz Operations) bfs file system.</para>
    360 </listitem>
    361 </varlistentry>
    362 
    363 <varlistentry id="mkfs.cramfs">
    364 <term><command>mkfs.cramfs</command></term>
    365 <listitem>
    366 <indexterm zone="ch-system-util-linux mkfs.cramfs"><primary sortas="b-mkfs.cramfs">mkfs.cramfs</primary></indexterm>
    367 <para>creates a cramfs file system.</para>
    368 </listitem>
    369 </varlistentry>
    370 
    371 <varlistentry id="mkfs.minix">
    372 <term><command>mkfs.minix</command></term>
    373 <listitem>
    374 <indexterm zone="ch-system-util-linux mkfs.minix"><primary sortas="b-mkfs.minix">mkfs.minix</primary></indexterm>
    375 <para>creates a Minix file system.</para>
    376 </listitem>
    377 </varlistentry>
    378 
    379 <varlistentry id="mkswap">
    380 <term><command>mkswap</command></term>
    381 <listitem>
    382 <indexterm zone="ch-system-util-linux mkswap"><primary sortas="b-mkswap">mkswap</primary></indexterm>
    383 <para>initializes the given device or file to be used as a swap area.</para>
    384 </listitem>
    385 </varlistentry>
    386 
    387 <varlistentry id="more">
    388 <term><command>more</command></term>
    389 <listitem>
    390 <indexterm zone="ch-system-util-linux more"><primary sortas="b-more">more</primary></indexterm>
    391 <para>is a filter for paging through text one
    392 screen full at a time. But <command>less</command> is much better.</para>
    393 </listitem>
    394 </varlistentry>
    395 
    396 <varlistentry id="mount">
    397 <term><command>mount</command></term>
    398 <listitem>
    399 <indexterm zone="ch-system-util-linux mount"><primary sortas="b-mount">mount</primary></indexterm>
    400 <para>attaches the file system on the given device to a specified directory (thus
    401 hiding the contents of that directory) in the file-system tree.</para>
    402 </listitem>
    403 </varlistentry>
    404 
    405 <varlistentry id="namei">
    406 <term><command>namei</command></term>
    407 <listitem>
    408 <indexterm zone="ch-system-util-linux namei"><primary sortas="b-namei">namei</primary></indexterm>
    409 <para>shows the symbolic links in the given pathnames.</para>
    410 </listitem>
    411 </varlistentry>
    412 
    413 <varlistentry id="pg">
    414 <term><command>pg</command></term>
    415 <listitem>
    416 <indexterm zone="ch-system-util-linux pg"><primary sortas="b-pg">pg</primary></indexterm>
    417 <para>displays a text file one screen full at a time.</para>
    418 </listitem>
    419 </varlistentry>
    420 
    421 <varlistentry id="pivot_root">
    422 <term><command>pivot_root</command></term>
    423 <listitem>
    424 <indexterm zone="ch-system-util-linux pivot_root"><primary sortas="b-pivot_root">pivot_root</primary></indexterm>
    425 <para>makes the given file system the new
    426 root file system of the current process.</para>
    427 </listitem>
    428 </varlistentry>
    429 
    430 <varlistentry id="ramsize">
    431 <term><command>ramsize</command></term>
    432 <listitem>
    433 <indexterm zone="ch-system-util-linux ramsize"><primary sortas="b-ramsize">ramsize</primary></indexterm>
    434 <para>is used to set the size of the RAM disk in a bootable image.</para>
    435 </listitem>
    436 </varlistentry>
    437 
    438 <varlistentry id="rdev">
    439 <term><command>rdev</command></term>
    440 <listitem>
    441 <indexterm zone="ch-system-util-linux rdev"><primary sortas="b-rdev">rdev</primary></indexterm>
    442 <para>is used to query and set the root
    443 device and other things in a bootable image.</para>
    444 </listitem>
    445 </varlistentry>
    446 
    447 <varlistentry id="readprofile">
    448 <term><command>readprofile</command></term>
    449 <listitem>
    450 <indexterm zone="ch-system-util-linux readprofile"><primary sortas="b-readprofile">readprofile</primary></indexterm>
    451 <para>reads kernel profiling information.</para>
    452 </listitem>
    453 </varlistentry>
    454 
    455 <varlistentry id="rename">
    456 <term><command>rename</command></term>
    457 <listitem>
    458 <indexterm zone="ch-system-util-linux rename"><primary sortas="b-rename">rename</primary></indexterm>
    459 <para>renames the given files, replacing a given string with another.</para>
    460 </listitem>
    461 </varlistentry>
    462 
    463 <varlistentry id="renice">
    464 <term><command>renice</command></term>
    465 <listitem>
    466 <indexterm zone="ch-system-util-linux renice"><primary sortas="b-renice">renice</primary></indexterm>
    467 <para>is used to alter the priority of running processes.</para>
    468 </listitem>
    469 </varlistentry>
    470 
    471 <varlistentry id="rev">
    472 <term><command>rev</command></term>
    473 <listitem>
    474 <indexterm zone="ch-system-util-linux rev"><primary sortas="b-rev">rev</primary></indexterm>
    475 <para>reverses the lines of a given file.</para>
    476 </listitem>
    477 </varlistentry>
    478 
    479 <varlistentry id="rootflags">
    480 <term><command>rootflags</command></term>
    481 <listitem>
    482 <indexterm zone="ch-system-util-linux rootflags"><primary sortas="b-rootflags">rootflags</primary></indexterm>
    483 <para>is used to set the rootflags in a bootable image.</para>
    484 </listitem>
    485 </varlistentry>
    486 
    487 <varlistentry id="script">
    488 <term><command>script</command></term>
    489 <listitem>
    490 <indexterm zone="ch-system-util-linux script"><primary sortas="b-script">script</primary></indexterm>
    491 <para>makes a typescript of a terminal session, of everything printed to
    492 the terminal.</para>
    493 </listitem>
    494 </varlistentry>
    495 
    496 <varlistentry id="setfdprm">
    497 <term><command>setfdprm</command></term>
    498 <listitem>
    499 <indexterm zone="ch-system-util-linux setfdprm"><primary sortas="b-setfdprm">setfdprm</primary></indexterm>
    500 <para>sets user-provided floppy disk parameters.</para>
    501 </listitem>
    502 </varlistentry>
    503 
    504 <varlistentry id="setsid">
    505 <term><command>setsid</command></term>
    506 <listitem>
    507 <indexterm zone="ch-system-util-linux setsid"><primary sortas="b-setsid">setsid</primary></indexterm>
    508 <para>runs the given program in a new session.</para>
    509 </listitem>
    510 </varlistentry>
    511 
    512 <varlistentry id="setterm">
    513 <term><command>setterm</command></term>
    514 <listitem>
    515 <indexterm zone="ch-system-util-linux setterm"><primary sortas="b-setterm">setterm</primary></indexterm>
    516 <para>is used to set terminal attributes.</para>
    517 </listitem>
    518 </varlistentry>
    519 
    520 <varlistentry id="sfdisk">
    521 <term><command>sfdisk</command></term>
    522 <listitem>
    523 <indexterm zone="ch-system-util-linux sfdisk"><primary sortas="b-sfdisk">sfdisk</primary></indexterm>
    524 <para>is a disk partition table manipulator.</para>
    525 </listitem>
    526 </varlistentry>
    527 
    528 <varlistentry id="swapdev">
    529 <term><command>swapdev</command></term>
    530 <listitem>
    531 <indexterm zone="ch-system-util-linux swapdev"><primary sortas="b-swapdev">swapdev</primary></indexterm>
    532 <para>is used to set the swap device in a bootable image.</para>
    533 </listitem>
    534 </varlistentry>
    535 
    536 <varlistentry id="swapoff">
    537 <term><command>swapoff</command></term>
    538 <listitem>
    539 <indexterm zone="ch-system-util-linux swapoff"><primary sortas="b-swapoff">swapoff</primary></indexterm>
    540 <para>disables devices and files for paging and swapping.</para>
    541 </listitem>
    542 </varlistentry>
    543 
    544 <varlistentry id="swapon">
    545 <term><command>swapon</command></term>
    546 <listitem>
    547 <indexterm zone="ch-system-util-linux swapon"><primary sortas="b-swapon">swapon</primary></indexterm>
    548 <para>enables devices and files for paging and swapping.</para>
    549 </listitem>
    550 </varlistentry>
    551 
    552 <varlistentry id="tunelp">
    553 <term><command>tunelp</command></term>
    554 <listitem>
    555 <indexterm zone="ch-system-util-linux tunelp"><primary sortas="b-tunelp">tunelp</primary></indexterm>
    556 <para>is used to tune the parameters of the line printer.</para>
    557 </listitem>
    558 </varlistentry>
    559 
    560 <varlistentry id="ul">
    561 <term><command>ul</command></term>
    562 <listitem>
    563 <indexterm zone="ch-system-util-linux ul"><primary sortas="b-ul">ul</primary></indexterm>
    564 <para>is a filter for translating underscores into
    565 escape sequences indicating underlining for the terminal in use.</para>
    566 </listitem>
    567 </varlistentry>
    568 
    569 <varlistentry id="umount">
    570 <term><command>umount</command></term>
    571 <listitem>
    572 <indexterm zone="ch-system-util-linux umount"><primary sortas="b-umount">umount</primary></indexterm>
    573 <para>disconnects a file system from the system's file tree.</para>
    574 </listitem>
    575 </varlistentry>
    576 
    577 <varlistentry id="vidmode">
    578 <term><command>vidmode</command></term>
    579 <listitem>
    580 <indexterm zone="ch-system-util-linux vidmode"><primary sortas="b-vidmode">vidmode</primary></indexterm>
    581 <para>could be used to set the video mode in a bootable image.</para>
    582 </listitem>
    583 </varlistentry>
    584 
    585 <varlistentry id="whereis">
    586 <term><command>whereis</command></term>
    587 <listitem>
    588 <indexterm zone="ch-system-util-linux whereis"><primary sortas="b-whereis">whereis</primary></indexterm>
    589 <para>reports the location of binary, the
    590 source, and the manual page for the given command.</para>
    591 </listitem>
    592 </varlistentry>
    593 
    594 <varlistentry id="write">
    595 <term><command>write</command></term>
    596 <listitem>
    597 <indexterm zone="ch-system-util-linux write"><primary sortas="b-write">write</primary></indexterm>
    598 <para>sends a message to the given user,
    599 <emphasis>if</emphasis> that user has not disabled such messages.</para>
    600 </listitem>
    601 </varlistentry>
    602 </variablelist>
     52<para>See testing</para>
    60353
    60454</sect2>
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