Linux

This article starts in Http://oliveryang.net, please include the original text or the author's website link when reproduced. This paper mainly discusses the implementation of Linux kernel scheduler preemption. The general operating system and x8

Found in the work, often because of business reasons, need to know the traffic of a server network card, although the company also deployed cacti software, but the cacti is five minutes statistics, no instant, and sometimes open the monitoring page

The acquisition of dynamic IP address of Linux system and configuration of static IP addressToday, after installing the virtual machine and Linux system, the following experiments have been done in this experiment, the knowledge points and the

By traceroute we can know what path the information from your computer to the other end of the Internet host is walking. Of course, each time a packet arrives at a similar destination (destination) by a similar starting point (source), the path may

1 PrefaceThe first commitment: for users migrating from the Windows system, the "Linux system can be plagued by the system files and user files to the C-drive and the D-disk " problem can also be satisfactorily resolved.The previous article had a

Help information for the date command[root@localhost source]# date--helpusage: date [options] ... [+ format]or: Date [-u|--utc|--universal] [MMDDHHMM[[CC]YY][.SS]]Displays the current time in the given format, or sets the system date. -D,--date=

Http://www.cnblogs.com/taobataoma/archive/2007/08/30/875743.htmlsignal is a very important part of Linux programming, this article will detail the basic concept of signal mechanism, the approximate realization method of Linux to signal mechanism,

Merge steps: (1) switch to the branch first; (2) SVN merge trunk. (3) svn sw trunk (4) SVN merge -- ReIntegrate branch.   SVN merge http: // 59.251.189.152: 8989/SVN/Ron/trunk /. The parameter -- reintegrate must be added to the branch and

I installed Ubuntu today but found that I cannot access the Internet. I started to troubleshoot the problem: 1. First, check whether the network connection is correct and whether the network cable used works properly. 2. Check whether the

Although telnet is not safe in plain text transmission, it is always necessary to take time to learn. I do not have a deep understanding. Currently, most of the cases are through SSH (not quite familiar ). The environment of my experiment is in

This article analyzes in detail the implementation of the chain table structure in the 2.6.x kernel, and explains each chain table operation interface in detail through an instance. I. Data Structure of linked listsA linked list is a commonly used

  The operating system kernel may be a micro kernel or a single kernel (which is sometimes called a macro kernel macrokernel ). These terms are defined as follows in a similar encapsulation:       Single Kernel: Also knownMacro Kernel. The kernel is

I. I have introduced the knowledge about System V message queues. Now let's take a look at POSIX message queues. In fact, message queue is a place where data can be exchanged between processes. The biggest difference between the two standard message

Mobile phones have now reached the 3G era. Smartphones are becoming increasingly popular. Because mobile phones are becoming more and more powerful, many friends are at a loss when choosing a smartphone and do not know which operating system to

How to run Ubuntu Snappy Core in Raspberry Pi 2 The Internet of Things (IoT) era is approaching. Soon, in a few years, we will ask ourselves how we were able to survive without the Internet of Things, just as we now suspect that there was no mobile

UNIX advanced environment programming (13) signal, unix programming 13 Signal The signal is Soft Interrupt. Signals provide an asynchronous way to process events. For example, you can press the End Process key on the terminal to terminate a process

There are many methods for setting up a vpn Server on ubuntu with a single Nic, including PPTP, L2TP/IPSec, and OpenVPN. Among the three methods, the latter two have better security, but the configuration is troublesome. OpenVPN also requires

Use the w command and uptime command in Linux to view the system load In Linux, when querying the CPU and memory loads (usage), we are usually used to using top, atop, or ps, this article will introduce how to use the w command and uptime command to

Ubuntu uses top/free to check the memory usage. When I use free/top to check the memory usage, I was shocked. The machine has 4 GB of memory, it shows that the free idle memory is only over 300 mb. After checking the process, no applications that

Add the PXE network startup environment from Ubuntu/Debian to RHEL/CentOS 7 This tutorial will guide you to add the Ubuntu 14.10 Server, Ubuntu 14.04 Server, and Debian 7 Wheezy release to the PXE network startup environment of RHEL/CentOS 7. Add