Linux

Library files are connected (static library and Shared Library) and run (only when shared library is used)ProgramIs used, and its search path is set in the system. In Linux, the/lib and/usr/lib directories are used as the default library search

1. Run the command fdisk-L to check the system disk and partition status. 2. Insert the USB flash drive, run the fdisk-l command again to check that one hard disk/dev/SDB and one of its partitions/dev/sdb1 3. Run the command mkdir-P/mnt/USB, create

Last Friday, Linus Torvalds finally released a high-profile new-generation Linux operating system kernel. The official version of Linux kernel 3.0 was released only after seven RC candidate versions. The previous version was 2.6.39 in May 19 and is

6.3.1 Partner Algorithm 1. Principle In Linux, the partner algorithm divides all idle pages into 10 block groups. The size of blocks in each group is the power of 2. For example, the block size in group 0th is 20 (1 page), the block size in group

MTD (memory technology device) is a Linux subsystem used to access memory devices (ROM, flash. The main purpose of MTD is to make the drive of the new memory device easier. Therefore, MTD provides an abstract interface between the hardware and the

When files are frequently accessed in Linux, the physical memory will soon be used up. When the program ends, the memory will not be released normally, but will always be used as caching. It seems that many people are asking this question, but they

Cainiao compiles Linux KernelPig with double eyelidCainiao, I recently studied how to compile the Linux kernel. I hope to share it with you... We will not discuss the source code here, but some kernel compilation steps and related knowledge...

First, the rhel5 system has been installed with Yum, because if you use an official website to update the yum, it will prompt registration and so on unless you have bought rhel5. So you just needChange the yum update address to an open-source one.

Function Description: Specifies the default permission mask when creating a file. Syntax:Umask[-S] [permission mask] Note:UmaskYou can set the [permission mask]. The [permission mask] is composed of three Octal numbers. After the existing access

Recently, I am studying Linux. Below are some notes. When using a computer, you often need to find files. In Linux, there are many ways to do this. The foreign website linuxhaxor summarizes Five Commands. You can check several of them. Most

[Transfer] http://hi.baidu.com/_kouu/item/4c73532902a05299b73263d0   [Address ing] (Figure: middle left)The Linux kernel uses page-based memory management. The memory address provided by the application is a virtual address. It must undergo several

  Some common basic commands: Uname-a view kernel version Ls-AL: Display Properties of all files PWD displays the current path CD-returns the last directory Cd ~ Returns the home directory. Date S: set the time and date Cal display calendar Cal 2006

Linux Command summary: First, make several statements: (1). These commands are run on Redhat Linux and may not work on ibm aix; (2). I will not introduce all the commands, and I will not introduce all the parameters for each command. I will only

Linux directory Architecture/Root directory /Bin commonly used command binary file directory /Boot stores the files that must be read when the system starts, including the core (kernel ). /Boot/GRUB/menu. lst grub settings /Boot/vmlinuz Kernel /Boot/

Linux dd command usage dd is a very useful command in Linux/Unix. It is used to copy an object with a specified size block and perform the specified conversion at the same time. The main option of DD: specify a number. If the following column ends

When analyzing the Linux source code today, we can see that net_device {} has a ____ cacheline_aligned_in_smp. ____ Cacheline_aligned_in_smp is defined in include/Linux/cache. h: #ifndef ____cacheline_aligned#define ____cacheline_aligned __attribute_

Lsmod actually reads and analyzes the/proc/modules File cat /proc/modules Information about the loaded modules in the kernel exists in/sys/modules. /sys/module is a sysfs directory level that contains information about the currently loaded modules.

#include typedef int (*wait_queue_func_t)(wait_queue_t *wait, unsigned mode, int flags, void *key);int default_wake_function(wait_queue_t *wait, unsigned mode, int flags, void *key);struct __wait_queue_head { spinlock_t lock; struct list_head

record Chapter 2 Introduction to computer CPU typeCPU is mainly divided into two types: simplified instruction set-defined memory (PROTEUS) and Complex Instruction Set-defined memory (CISC.For simplified instruction sets, common series include the

Linux administrator Guide Chapter 2 similarities and differences between Linux releases and Windows NT 1.3.1 comparison of single-user, multi-user, and network users Windows NT was designed based on the idea of Bill Gates, the founder of Microsoft,