Linux kernel and kernel modules

The composition of the 1.Linux

consists of kernel and corresponding function module, kernel/boot/vmlinuz-"kernel version number" file, module file in/lib/modules/version number/directory (for. ko files)

In the/proc/sys/directory can modify the file to modify the kernel parameters (note that these files can not be opened with Vim to modify the only way to use redirection)

echo "www.luochen.com" >/proc/sys/kernel/hostname

You can change that, too.

sysctl-w kernel.hostname= "luochen.com" can take effect immediately, but cannot be permanently effective

2./etc/sysctl.conf files are permanently valid and need to be restarted

sysctl-p: Reread config file, immediately effective

SYSCTL-A: Show all kernel parameters and their values

3. Kernel Module Management

A.lsmod: View all loaded Modules

B.modprobe mod_name: Loading a module

C.modprobe-r mod_name: Uninstalling a module

D.modinfo mod_name: View specific information about the module

E.insmod/path/to/module_file: Load Module

F.rmmod mod_name: Removing modules

G.depmod/path/to/modiles_dir: Building Module dependencies

4. Kernel compilation

Features in the kernel, in addition to the core functions, at compile time, most of the features have three choices:

1. Do not use this function

2. Compile into kernel module

3. Compile into kernel

5. How to manually compile the kernel

A. Make Gconfig:gnome desktop environment needs to install the Graphics Development Library Group GNOME Software Development

Make KCONFIG:KDE desktop environment requires installation of the Graphics Development Library Group KDE software development

Here's another way to use it.

Make Menuconfig

B.make

C.make Modules_install

D.make Install

E. Restarting the new system

F. Manually compiling the kernel is to try not to use remote connections (compilation takes a long time and may be interrupted unexpectedly)

If you must use the screen command only remotely

yum-y Install screen installation screen   

Screen command:

Screen-ls: Displays the already established screen

Screen: Open a new display directly

CTRL + A, D: removing the screen

Screen-r ID: Revert back to a screen

Exit: Exit

G. Two compile-time cleanup, before cleaning, back up the configuration file, if necessary. config:

Make clean or

Make Mrproper

This article is from "Luo Chen's blog" blog, please be sure to keep this source http://luochen2015.blog.51cto.com/9772274/1651912

Linux kernel and kernel modules