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📁 linux-unix130.linux.and.unix.ebooks130 linux and unix ebookslinuxLearning Linux - Collection of 12 E
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<TITLE>Linux Complete Command Reference:File Formats:EarthWeb Inc.-</TITLE>

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<a href="1148-1149.html">Previous</A> | <a href="../ewtoc.html">Table of Contents</A> | <a href="1152-1154.html">Next</A></CENTER></P>







<A NAME="PAGENUM-1150"><P>Page 1150</P></A>





<TABLE>



<TR><TD>

table=device

</TD><TD>

This specifies the device that contains the partition table. The boot loader will not

pass partition information to the booted operating system if this variable is omitted.

(Some operating systems have other means to determine from which partition they have

been booted. For example, MS-DOS usually stores the geometry of the boot disk or partition

in its boot sector.) Note that /sbin/lilo must be rerun if a partition table mapped

referenced with table is modified.

</TD></TR><TR><TD>

unsafe

</TD><TD>

Do not access the boot sector at map creation time. This disables some sanity

checks, including a partition table check. If the boot sector is on a fixed-format floppy disk

device, using UNSAFE avoids the need to put a readable disk into the drive when running the

map installer. unsafe and table are mutually incompatible.

</TD></TR></TABLE>



<P>In both cases, the following options apply:

</P>



<TABLE>



<TR><TD>

label=name

</TD><TD>

The boot loader uses the main file

name (without its path) of each image specification

to identify that image. A different name can be used by setting the variable

label.

</TD></TR><TR><TD>

alias=name

</TD><TD>

A second name for the same entry can be used by specifying an alias.

</TD></TR><TR><TD>

lock

</TD><TD>

(See previous description.)

</TD></TR><TR><TD>

optional

</TD><TD>

Omit the image if it is not available at map creation time. This is useful to specify

test kernels that are not always present.

</TD></TR><TR><TD>

password=password

</TD><TD>

Protect the image by a password.

</TD></TR><TR><TD>

restricted

</TD><TD>

A password is only required to boot the image if parameters are specified on the

command line (such as single).

</TD></TR></TABLE>



<P><B>

KERNEL OPTIONS

</B></P>



<P>If the booted image is a Linux kernel, then one may pass command-line parameters to this kernel.

</P>



<TABLE>



<TR><TD>

append=string

</TD><TD>

Appends the options specified to the parameter line passed to the kernel. This is

typically used to specify parameters of hardware that can't be entirely autodetected or for

which probing may be dangerous. Example: append =

&quot;hd=64,32,202&quot;.

</TD></TR><TR><TD>

literal=string

</TD><TD>

Like append but removes all other options (such as setting of the root device). Because

vital options can be removed unintentionally with

literal, this option cannot be set in the global options section.

</TD></TR><TR><TD>

ramdisk=size

</TD><TD>

This specifies the size of the optional RAM disk. A value of zero indicates that no RAM

disk should be created. If this variable is omitted, the RAM disk size configured into the

boot image is used.

</TD></TR><TR><TD>

read-only

</TD><TD>

This specifies that the root filesystem should be mounted read-only. Typically, the

system startup procedure remounts the root filesystem read-write later (such as after

fscking it).

</TD></TR><TR><TD>

read-write

</TD><TD>

This specifies that the root filesystem should be mounted read-write.

</TD></TR><TR><TD>

root=root-device

</TD><TD>

This specifies the device that should be mounted as root. If the special name

current is used, the root device is set to the device on which the root filesystem is currently mounted. If

the root has been changed with -r, the respective device is used. If the variable

root is omitted, the root device setting contained in the kernel image is used. (That is set at compile

time using the ROOT DEV variable in the kernel makefile and can later be changed with the

rdev(8) program.)

</TD></TR><TR><TD>

vga=mode

</TD><TD>

This specifies the VGA text mode that should be selected when booting. The

following values are recognized (case is ignored):

</TD></TR><TR><TD>

</TD><TD>

normal: Select normal 80x25 text mode.

</TD></TR><TR><TD>

</TD><TD>

extended (or ext): Select 80x50 text mode.

</TD></TR><TR><TD>

</TD><TD>

ask: Stop and ask for user input (at boot time).

</TD></TR><TR><TD>

</TD><TD>

&lt;number&gt;: Use the corresponding text mode. A list of available modes can be obtained

by booting with vga=ask and pressing Enter.

</TD></TR></TABLE>



<A NAME="PAGENUM-1151"><P>Page 1151</P></A>







<TABLE>



<TR><TD>

</TD><TD>

If this variable is omitted, the VGA mode setting contained in the kernel image is

used. (That is set at compile time using the SVGA

MODE variable in the kernel makefile and can later be changed with the

rdev(8) program.)

</TD></TR></TABLE>





<P><B>

SEE ALSO

</B></P>



<P>lilo(8), rdev(8). The LILO distribution comes with very extensive documentation of which the preceding information is

an extract.

</P>



<P>28 July 1995</P>



<H3><A NAME="ch05_ 30">

MAKEDEV.cfg

</A></H3>



<P>MAKEDEV.cfg&#151;Configuration for MAKEDEV(8).</P>



<P><B>

DESCRIPTION

</B></P>



<P>MAKEDEV.cfg is a text file that tells MAKEDEV(8) what to do (and equally importantly, what not to do). Unlike

DEVINFO(5), which is meant to be centrally maintained, it contains all local configuration for a particular site and all customization. There

are basically two kinds of declaration in this file: a &quot;class&quot; declaration and an &quot;omit&quot; declaration.

</P>



<P>A class declaration has the form

</P>



<!-- CODE SNIP //-->

<PRE>

class name : owner group-owner permissions

</PRE>

<!-- END CODE SNIP //-->



<P>This says that any devices placed in the specified class by

DEVINFO should be created with this ownership and these

permissions. A sample entry might be

</P>



<!-- CODE SNIP //-->

<PRE>

class public: root system 0666

</PRE>

<!-- END CODE SNIP //-->



<P>This says that devices marked public should be owned by

root.system and have mode 666.

</P>



<P>An omit declaration has the form

</P>



<!-- CODE SNIP //-->

<PRE>

omit { device... }

</PRE>

<!-- END CODE SNIP //-->



<P>This causes the specified devices to never be created, even if explicitly specified. Use caution when setting this up. The

intent is to be able to run MAKEDEV update and not have it create all sorts of useless devices you'd never use.

</P>



<P><B>

SEE ALSO

</B></P>



<P>MAKEDEV(8), DEVINFO(5)

</P>



<P>Version 1.4, January 1995

</P>



<H3><A NAME="ch05_ 31">

moderators

</A></H3>



<P>moderators&#151;Mail addresses for moderated Usenet newsgroups.

</P>



<P><B>

DESCRIPTION

</B></P>



<P>The GetModeratorAddress(3) routine reads the file

/news/lib/moderators to determine how to reach the moderator of

a newsgroup. This is used by inews(1) when an unapproved local posting is made to a moderated newsgroup.

</P>



<P>The file is read until a match is found. Blank lines and lines starting with a number sign

(#) are ignored. All other lines should consist of two fields separated by a colon.

</P>



<P>The first field is a wildmat(3)-style pattern. If it matches the name of the newsgroup, then the second field is taken to be

a format string for sprintf(3). This string should have at most one

%s parameter, which will be given the name of the newsgroup with periods transliterated to dashes.

</P>









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