Linux

After installing Linux in VMware or other virtual machinesWhen switching between windows and virtual terminals, we find that CTRL + ALT + FX does not work. How can we solve this problem? In fact, the method is very simple. We only needThe hotkey of

Differences between threads and processes ----------------------------------------------------- 1. Frugal: in Linux, when a new process is started, it must be allocated an independent address space and a large number of data tables are created

We found this usage in flash_eraseall of MTD-util: ---------------------------------------------------------------- # Define memgetinfo _ ior ('M', 1, struct mtd_info_user) ...... IOCTL (FD, memgetinfo, & meminfo) ------------------------------------

LINUX serial port control read () The element corresponding to two subscripts (vtime and Vmin) in the array c_cc is not a control operator and is only valid in the original mode. The serial port mode is controlled through options. c_lflag, for

Links: blog.csdn.net/lanmanck/archive/2009/08/18/4459699.aspxBased on the Atmel SPI model, you can take a look at the analysis of this article: Http://blog.chinaunix.net/u3/96265/showart_1925533.html [Post indicated source]

Implementation of arm interrupt in linux-2.6.26 kernel (3)Author: Liu Hongtao, a gold medal lecturer at Huaqing vision embedded College. Iv. Interrupt Processing Model To understand the relationship between desc-> handle_irq (IRQ, DESC) and the

Today, it took a whole day to solve the problem that the port of insight cannot be modified. Although the problem was solved, it also paid a lot of money, it took a whole day + to destroy the previous system. So we can reinstall and configure the

1. Download source code   $ Wget Linux-kernel/v2.6/linux-2.6.31.tar.bz2   2. decompress the source code   $ Tar-jxvf linux-2.6.31.tar.bz2-C/usr/src/ Tip: Of course, it is not necessary to decompress it to/usr/src/. You can decompress it to any

1. TabShift + Ctrl + T: Create a tabShift + Ctrl + W: Close the tabCTRL + Pageup: Previous TabCTRL + Pagedown: Next TabShift + Ctrl + Pageup: tab left shiftShift + Ctrl + Pagedown: Right Shift of the tabAlt + 1: Switch to Tab 1Alt + 2: Switch to Tab

Http://blog.csdn.net/hemmanhui/archive/2009/07/15/4346368.aspx Http://blog.csdn.net/stefmoon/archive/2010/04/10/5469607.aspx   [Linux] pthread_mutex_lock and pthread_spin_lock Performance

Linux interrupt upper and lower sections In addition, an important concept that is closely related to Linux interrupt is that Linux interrupt is divided into two parts:UpperHalf (tophalf) andLowerHalf (bottom half ).UpperThe half function

Linux pipeline learning favoritesPipeline is an important communication method in Linux. It connects the output of a program directly to the input of another program. It is often said that most pipelines refer to unknown pipelines, an unknown

Driver for USB to serial port in Linux (10:45:21){ Function anonymous () { Scope. articel_quote_alert && Scope. articel_quote_alert ('40d23f130100hgxv '); Return false; } } "Href =" javascript:; "> Sg_icon111 "src =" http://simg.sinajs.cn/blog7style/

LVM is short for logical volume manager. It is a mechanism for managing disk partitions in Linux, LVM is a logical layer built on hard disks and partitions to improve the flexibility of disk partition management. As mentioned above, LVM is a logical

A few days ago, I talked to my colleagues about multi-core and multi-task tasks. I lamented the trouble of synchronizing multiple threads when writing a program. I was worried that the program I wrote would have a problem. I heard that the

  1. is the kernel thread created only in kernel thred? 2. Cannot the kernel thread be killed? 3. Use the kernel_thread function of the kernel thread created in the module to obtain the current-> mm value. Why is it not 0? 4.     First look at a

System. Map content format: Linear address type symbol The details are as follows:00100000 A phys_startup_32C0100000 t startup_32C0100000 A _ text Note: indicates the address of the first byte of the kernel codeC01000c6 t checkcputypeC0100147 t is486

1) Compile source program analysis:Compile an at&t assembly language program to sleep for 10 seconds during running. The source code is as follows: # Include "sys/syscall. H" . DataSleeptime:. Long 10, 0 . Text . Global _ start. Type _ start, @

Command name: chmod Permission: All Users Usage: chmod [-CFVR] [-- help] [-- version] mode file... Note: file access permissions for Linux/Unix are classified into three levels: file owner, group, and others. Chmod can be used To control how an

Multithreading in Linux follows the POSIX thread interface, which is called pthread. To compile a multi-threaded program in Linux, you need to use the header file pthread. H. You need to use the library libpthread. A for connection. By the way, the