MTD 248-645A Manual de usuario descargar pdf (Pagina 98)

Linux From Scratch - Version 7.0

6.2.1. Creating Initial Device Nodes

When the kernel boots the system, it requires the presence of a few device nodes, in particular the console and

null devices. The device nodes must be created on the hard disk so that they are available before udevd has been

started, and additionally when Linux is started with init=/bin/bash. Create the devices by running the following

commands:

mknod -m 600 $LFS/dev/console c 5 1

mknod -m 666 $LFS/dev/null c 1 3

6.2.2. Mounting and Populating /dev

The recommended method of populating the /dev directory with devices is to mount a virtual filesystem (such as

tmpfs) on the /dev directory, and allow the devices to be created dynamically on that virtual filesystem as they

are detected or accessed. Device creation is generally done during the boot process by Udev. Since this new system

does not yet have Udev and has not yet been booted, it is necessary to mount and populate /dev manually. This is

accomplished by bind mounting the host system's /dev directory. A bind mount is a special type of mount that allows

you to create a mirror of a directory or mount point to some other location. Use the following command to achieve this:

mount -v --bind /dev $LFS/dev

6.2.3. Mounting Virtual Kernel File Systems

Now mount the remaining virtual kernel filesystems:

mount -vt devpts devpts $LFS/dev/pts

mount -vt tmpfs shm $LFS/dev/shm

mount -vt proc proc $LFS/proc

mount -vt sysfs sysfs $LFS/sys

6.3. Package Management

Package Management is an often requested addition to the LFS Book. A Package Manager allows tracking the

installation of files making it easy to remove and upgrade packages. As well as the binary and library files, a package

manager will handle the installation of configuration files. Before you begin to wonder, NO—this section will not talk

about nor recommend any particular package manager. What it provides is a roundup of the more popular techniques

and how they work. The perfect package manager for you may be among these techniques or may be a combination

of two or more of these techniques. This section briefly mentions issues that may arise when upgrading packages.

Some reasons why no package manager is mentioned in LFS or BLFS include:

• Dealing with package management takes the focus away from the goals of these books—teaching how a Linux

system is built.

• There are multiple solutions for package management, each having its strengths and drawbacks. Including one

that satisfies all audiences is difficult.

There are some hints written on the topic of package management. Visit the Hints Project and see if one of them

fits your need.

1 2 ... 93 94 95 96 97 98 99 100 101 102 103 ... 346 347

Sin comentarios

MTD 248-645A Manual de usuario Pagina 98