Linux

Opengrok is very handy for managing multiple project code. This article takes Opengrok 0.12. To explain the deployment on Redhat Enterprise Linuxhttp://opengrok.github.io/OpenGrok/Software Dependent Preparation:1 JAVA

Installing opencv2.0Decompression opencv-2.0.0.tar.bz2Tar xvf opencv-2.0.0.tar.bz2Configuration./configure--host=arm-linux \--without-carbon \--without-quicktime \--without-1394libs \--without-ffmpeg \--without-python \--without-swig \--WITHOUT-GTK \

Recently in doing video output related things, for reserved for framebuffer memory use is not very clear, now find some information to tidy up, in case of use.For a system, there will be a lot of peripherals, then the management of these peripherals

　　What is a FETCH command? to put it bluntly, a piece of data is analyzed to take out what we want. or by analyzing the keywords, get the line we want! However, it is important to note that, in general, the retrieval of information is usually for

　　What is a FETCH command? to put it bluntly, a piece of data is analyzed to take out what we want. or by analyzing the keywords, get the line we want! However, it is important to note that, in general, the retrieval of information is usually for

1. Installing Jansson./configureMakeMake install2. Generate the Help documentCd docMake HTMLSpinx-build not a command when compiling and installing docExecute the following statement to install SphinxEasy_install-u SphinxGenerate _build FolderCd

When using Message Queuing, call the#include #include #include #include #include #include struct MYMSG{Long MyType;Char even[32];};#define VALUE (key_t) 0x1fffint main (){struct mymsg msg;int msgid,res;MsgId = Msgget (VALUE, 0666 | Ipc_creat);Res

Compare with Windows to introduce Basic Linux operation methods and file management! (in pure command-line mode, why do you want to emphasize the command line?) Because at the end of the second I explained that almost all operations are done on

From time to time, the people want me to the Create LINUX init scripts for them. I usually just take a existing one for another service and the change it up to work for my new application, but the most of them has become so long these days that I

In the Linux system, we often use crontab to customize the task plan, but each execution will produce a message sent to/var/spool/clientmqueue/, these things are generally useless, also occupy disk space, need to deleteThe file may be too large to

Recently, I have been compiling Linux kernel, burning uboot in TQ2440, burning kernel, burning file system. And then there are so many questions.(1) difference between uboot and bootloaderBootLoader is literally "boot bootloader", which is used to

#include #include #include int param = 0;/*initialization function executed when device module is registered */static int __init initialization_module (void) {PRINTK ("Hello world.\n");PRINTK ("param =%d.\n", param);/* Module initialization

#include #include #include #include #include #include #include #include #include #include #include #include #defineXxx_device_count1/*XXX character device structure body */struct Xxx_dev{struct CDEVCdev;unsigned char*sth_of_xxx;Reserved};

Pipeline commands are quite important in Bash's continuous processing program! In addition, in the analysis of log file is also a very important link, so please pay special attention! In addition, in the pipeline command, often using the stdout of

The startup process of the Linux kernel (uimage format image, Uimage = Zimage_ Compressed kernel image + 0x40 byte size uboot format information header) can be broadly divided into three phases: First: The Kernel's self-extracting process

W Load average:0.12, 0.09, 0.02 1, 5, 15 min. loading condition, 0.8 below normal JCPU CPU time for the corresponding user execution command PCPU the CPU time consumed by the current command What the corresponding user is executing the command Idle

Sometimes we need the Linux system to automatically load some scripts or system services when booting upThis is done in three main ways:Ln-s a soft link to the/etc/init.d/service in the/ETC/RC.D/RC*.D directory (* represents one of the 0~6 seven

When we use the shell under Linux, we often encounter the fact that all the commands entered earlier need to be done again, it will be very troublesome to lose in a single line, and it is likely that these commands have to be re-executed again. At

Programmers are lazy, you know!Recently in the project development, the EXE developed by the CS program, need to automatically upgrade, the EXE program is placed under Linux, the automatic upgrade will not detect the version number of the EXE

in the virtual machine down implementation under Windows share a folder: (If the installation is complete vmtools:http://blog.csdn.net/pipisorry/article/details/21318931) Open vmware-> toolbar, select settings, virtual machine, option to add a