Use of Linux links: Create and delete symbolic connections

Use of Linux links: Create and delete symbolic connections 1. Usage: ln [Option] source_file dist_file-F: When the file is created, the same file name will be deleted.-I ask before deletion.Ln-s abc cde establishes a soft connection of ABCLn abc cde

I am USB in Linux, I am a USB flash drive (2) makefile

"Come out and try again sooner or later ." Basically, LinuxEach directory in the kernel has a makefile. MakefileAnd kconfigJust like a map of a city, a map leads us to know a city, while makefileAnd kconfigSo that we can understand the structure

I am USB in Linux, I am a USB flash drive (37) confused batch transmission (6)

The usb_stor_bulk_transfer_sglist () function is confusing. We have mentioned that sglist is used to improve transmission efficiency. As we know, SG aims to transmit a bunch of discontinuous buffers in one DMA Operation. In fact, this is not the

Porting real-time device drivers to embedded Linux

Bill weberger, monavista SoftwareLinux has occupied the embedded system market like a storm. According to industry analysts, about 1/3 to 1/2 of the New 32-bit and 64-bit embedded systems are designed to use Linux. Embedded Linux has shown its

System Performance Monitoring-Linux top commands

The basic functions of the top command and ps command are the same, displaying the current process of the system and other conditions. However, the top command is a dynamic display process, that is, you can press the key to continuously refresh the

Linux driver learning notes 3-character device driver instance (driver + client)

Character Device Driver instance With the foundation of the previous section, I will learn how to compile a character device driver and test it on the client to verify whether the character device driver has been created successfully.1. Character

Professional Latex: Write high-quality documents in Linux

Professional Latex: Write high-quality documents in Linux Document options

How to mount a USB device in FAT32 format in Linux

Run CAT/proc/partitions to check the partitions in the system. After plugging in the USB flash drive, run the preceding command again to see what partitions are added. This is generally sda1. 1. Insert a USB flash drive 2. Input fdisk-L/dev/SDA to

Linux ALSA audio card driver 8: Platform in ASOC Architecture

1. the role of the platform driver in ASOC has been described in the previous chapters. ASOC is divided into three parts: machine, platform, and CODEC. The main role of the platform driver is to manage audio data, finally, the audio data is

Install and use the curses library in Linux

The following content is transferred fromHttp://blog.163.com/lghct@126/blog/static/64551808201024101630455/ The curses library is used to develop a simple graphic interface program library (maybe it has more than this function, but currently I only

Linux mobile phone DIY. Build a unified installation package

Linux mobile phone DIY. Build a unified installation package Papayas on September 25 I. Sequencing Because the difference between xiaxin e600 and Philips 968 is large, it is necessary to perform a standard installation.. As early as a few days ago,

Linux Logical Disk volume management LVM details

Please note that this article has been published in "The World of open systems". The copyright of this article belongs to this magazine. Do not repost it at will. repost this article and keep this statement. Linux Logical Disk volume management LVM

Common log files and commands in Linux

One of the keys to the successful management of any system using common log files and commands in Linux is to know what is happening in the system. Exception logs are provided in Linux and the log details are configurable. Linux logs are stored in

Differences between clock (), sleep (), and sleep () in Windows and Linux

Recently, for Linux development on arm, C Programs Written in windows need to be transplanted to Linux. The underlying SPI driver implementation and socket communication on the upper layer need to be rewritten, the application also needs to be

Linux obtains the IP address MAC address netmask address

In Linux, obtain the IP address of the specified network and the interface of netmask: Int get_ip (char * ipaddr, char * netmask, const char * ethname){Int ret =-1;If (ipaddr & netmask & ethname){Int FD, intrface;Struct ifreq Buf [16];Struct ifconf

How to Implement the string. H function in Linux

/*File: String. h# Ifndef _ linux_string_h _# DEFINE _ linux_string_h _ /* We don't want strings. h stuff being user by user stuff by accident */ # Ifdef _ KERNEL __ # Include /* For size_t */# Include /* For null */# Include /* for inline

On the setuid permission in Linux

On the setuid permission in Linux) 1. What is setuid? We know that when the "Ps" command is executed under the Linux Command Line, all processes in the current system will be listed. In this example, we can see that each process is associated with

Linux Kernel Lecture Hall (1) cornerstone Driver Model for device drivers (1)

It may be difficult to put the driver model in the first chapter, but as long as the driver model can be crossed, it will be much easier later. The driver model is the cornerstone of the entire Linux Device Driver. Most people call the driver model

Linux Kernel Lecture Hall (1) cornerstone Driver Model for device drivers (6)

This article from the csdn blog, reproduced please indicate the source: http://blog.csdn.net/z2007b/archive/2011/05/19/6432997.aspx //************************************** ***************   Linux Kernel Lecture Hall (1) cornerstone Driver Model for

SEARCH strings in Linux

  For example: In the current directory, find the file with the suffix. C containing the hello string: Find.-Name "*. c" | xargs grep-h "hello" Appendix: (transfer) 1. grep Introduction Grep (Global Search Regular Expression (re) and print out the

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