Linux

GDB is a very useful debugging tool under Linux, although it is a command-line mode debugging tool, but it is powerful enough to you can not imagine, here is a brief introduction to GDB under common commands.Start by compiling the executable file

Reprinted from: http://blog.csdn.net/tigerjibo/article/details/8279183Likely () and unlikely () are everywhere in the 2.6 kernel, so why use them? What is the difference between them?First clear:if (likely (value)) is equivalent to if (value)if

Reference Links: Blog Link 1:http://blog.csdn.net/lichangzai/article/details/39379153 Baidu Encyclopedia: Http://baike.baidu.com/link?url=jedR4AlcW5sB5EnPRrEWmPCs6x3f9JHPpEdSOf2xzXCzl12wjPTyShco8Mmy7_

Linux high-end memory is for physical memory, virtual memory does not have the concept of high-end. The Linux system divides virtual memory into two parts: the userAddress space, and for 32-bit systems, the virtual address space is 4GB, where the

ObjectiveAfter trying to install a variety of online mono technology paste, the installation process went through about 2 weeks, tried many kinds of installation methods, there are a variety of different problems, connection MSSQL database anomalies,

http://sourceforge.net/projects/ss5/Download the latest source codeApt-get Install Libpam0g-devApt-get Install Libldap2-devApt-get Install Libssl-dev1, modify the/etc/opt/ss5/ss5.confAuth 0.0.0.0/0-UPermit U 0.0.0.0/0-0.0.0.0/0-----3.

How to make FTP settings (GO) under LinuxFirst, Redhat/centos install vsftp software1. Update the Yum sourceFirst, you need to update the system's Yum source, handy tool: http://help.aliyun.com/manual?spm=0.0.0.0.zJ3dBU&helpId=16922. Installing

Ubuntu14.04 firewall configuration1. Installation:Apt-get Install UFW2. Enable:UFW EnableUFW default Deny3. Turn ON/OFF:UFW Allow 22/TCP allows all external IP access to the native 22/tcp (SSH) portUFW deny 22/tcp Disable all external IP access to

ProcessWe usually write the C language code, compiled by the compiler, eventually it will become an executable program, when the executable program (before the end), it becomes a process.A program is an executable file that is stored on a storage

Things are very simple, a few words can be said to clear.Using LSIPC check you need to install to hardware, remember hardware to key model, go to search engine for Linux driver filesSimple decompression of the files after the installation is

Recently, looking at project makefile, I saw the powerful editing ability of SED, and before Makefile worked, it was usually executed scripts or make Menuconfig to configure various global variables. The SED activity phase is usually in the bash

Multithreaded programmingOperating system principle ConceptTime slicesProcess statusContext: For a process, it is the execution environment of the process, specifically the variables and data, including all the register variables, open files, memory

After the default ssh port is changed, how can I use git normally ?, Sshgit For security or other reasons, we may modify the default SSH service port number. By default, the existing git project reports an error during pull or push. Now assume

APUE: mmap function, apuemmap FunctionInitially After reading the memory ing I/O, it means you can understand it, that is, you can directly operate the file and then directly operate through the buffer to reduce the time it takes to call the read

CentOS command-at: Execute the task at the specified time Execute the task at the specified time.Command Format At [-V] [-q queue] [-f file] [-mldbv] TIMEAt [-V] [-q queue] [-f file] [-mldbv]-t time_argAt-c job [job...]Command Parameters -VPrint the

Zabbix monitors the status of tcp connections The Tcp connection status is crucial for our web servers, especially the concurrency ESTAB or the syn_recv value. If this value is large, we can determine whether it is under attack, or if the value of

How to view the job running status on the Web After submitting a job to a Hadoop cluster, we will find that the job running status cannot be viewed through the web, such as how many map tasks are started, how many reduce tasks are started, how many

CentOS6.4 install git and gitolite servers I. Deployment Environment System: CentOS 6.4x64 minimal installation IP: 192.168.3.27 Ii. Install the basic dependency

Centos6.x install and deploy MySQL5.5 detailed configuration Not long after work, I couldn't hold on to a turbulent heart, 2333333 Summary of errors and solutions encountered during Database Installation Objective: To build a lamp or lnmp

CentOS6.5 system build Apache server Apache is the world's No. 1 Web server software. It can run on almost all widely used computer platforms. Because of its wide use of cross-platform and security, it is one of the most popular Web server software.