Linux

Chapter III Process Management1. The fork system call returns two times from the kernel: one return to the child process, one return to parent process 2. The TASK_STRUCT structure is allocated using the slab allocator, which was placed at the bottom

Establish a named pipe, Mknod mypipe p. The named pipe exists on the hard disk, and the pipeline is not. Open this named pipe through open, implemented through Sys_open () in the kernel, and filename is "***/mypipe ".For the relevant section, refer

Source: http://www.jb51.net/LINUXjishu/34604.html Top is a dynamic display process that allows you to constantly refresh the current state by pressing the user key. If the command is executed in the foreground, it will monopolize the foreground,

A summary of the first-stage heavy difficulties notes (III.) CiscoFirst, Introduction: IOS(internetwork Operating System), which is typically configured through a text-based command lineINTERFACE,CLI. 1. Basic operation: Operation

Today began to use Ubuntu (mainly to prevent themselves in the windows under the unconscious of playing games and so on) just started to use the very unaccustomed to find the right compiler (DEV C + + when can out Linux AH) successively under the

Introduction:For Linux beginners, it is a headache to not have VMware Tools installed in a virtual VMware Tools software environment, and it is not possible to drag files from a host to a virtual machine. Install VMware tools to enhance virtual

Blog transfer from: http://my.oschina.net/hbzhangmao/blog/354533Learning it students know that Linux is a good thing, but beginners often because too many commands feel headache, more headache is all the help documents are English. In fact, Linux is

Today is the first time since the debut of the installation of JDK1.3, the University of contact has been JDK1.4, but also in red Hat Enterprise Linux Server release 6.6, The installation of JDK1.3 is due to the fact that a software group project is

Linux HistoryWe all know that the development of PC can be said to be from the electron tube era to the transistor era, after the integrated circuit, and then to the VLSI, that is, the current PC, or from a minicomputer to a compatible machine to

System Information The processor architecture of the Arch Display Machine (1) UNAME-M display the processor architecture of the Machine (2) uname-r display the kernel version dmidecode-q display hardware system parts-(SMBIOS/DMI) hdparm-i/dev/ HDA

1) Enter the source code websitehttps://www.kernel.org/The page is as follows:2) The GIT address of the main line, when the point mainline behind the "Browse", as follows:Click on the Penguin to the right of the index:kernel/git/torvalds/linux.git,

The predecessor of SNMP (Simple network Management Protocol), the simplest web management protocol, is the simple Gateway Monitoring Protocol (SGMP), which is used to manage communication lines. In Rhel, the configuration file address for SNMP

1.wget plus the URL of the file you want to download, you can download the file in the current directory, such as:wget http://apache.freelamp.com/httpd/httpd-2.2.14.tar.gzNote: The URL must be real.2.RM-RF the directory and all files in that

Reprint please specify the source Lin Xi Wood greatlyWhen you do something on the command line, you often encounter a situation where you switch back and forth between multiple directories. This time will be very distressed. So after searching the

Recently bought a solid-state drive, first installed a win 7 system, now installed system and the only difference between the previous system is that the boot is not the previous MBR, but the latest seems to be a trend of the gpt+uefi way.Win 7

1: Scene Description 在做Netty相关项目的时候，我们往往需要绑定本机的IP和端口号，如果我们把它写在配置文件中，那么我们每次换电脑运行或者部署到其他环境时候都需要修改配置文件。这样就会比较麻烦，如果我们把它做成智能的获取本机的IP，这样我们的代码的可移植性就提高了。下面就介绍一种在windows和linux下面可以智能获取我们本机的局域网IP和外网IP的方法，不妥之处还请大家多多指教。2: Workaround and codeFirst, attach the

Build and use a Linux development environment -- Use of common Linux commandsOverview Many people may have seen similar scenes on television or movies. Hackers face a black screen with dense characters on it. After a click, they have completed the

Firewall-cmd command in CentOS 7 In CentOS 7 Ftp service is currently available# Firewall-cmd -- add-service = ftpPermanently open ftp service# Firewall-cmd -- add-service = ftp -- permanentPermanently close# Firewall-cmd -- remove-service = ftp --

Use of command alias in CentOSIn Linux, mis-typing the rm command is an easy task. Therefore, it is very important to avoid the harm caused by the rm command. In Linux, it is actually very easy to implement rm command interaction. You only need to

Linux Network Programming: original socket programming and instance analysis (1) I. What can the original socket do? Generally, the programmer receives two types of sockets: (1) stream Socket (SOCK_STREAM): a connection-oriented Socket for