Linux

one. The port number that the service opens.     DHCPSamba 139 445http HTTPS 443MySQL 3306    MSSQL 1433 Oracle 1521SSHtelnetDNStwo. iptables Firewall Open Firewall command: SetupIptables Firewall protection rules and functions: Acting on the

Purpose of inter-process communication Data exchange State synchronization Event notification Resource sharing Process Control In general, the communication between processes can be divided into two types, one is

A. linux File system path descriptionFamiliar with Windows systems, all know the file path representation, such as C:\User\rich\Documnets\test.doc.In Linux, a directory called the virtual directory root directory is root, and directories and files

Environment description IP programs that need to be installed 192.168.209.12 Nginx MySQL PHP *LNMP The installation of the schema *① install Nginx② install Mysql③ install Php④ last

Ifconfig [Interface]Ifconfig interface [Aftype] options | Address ...Ifconfig is a tool for viewing and configuring network interfaces. Ifconfig configuration information is restored after the network device restarts. To permanently save, go to

Http://www.cnblogs.com/kerrycode/p/4723637.htmlYum is the abbreviation for Yellow Dog Updater modified, originally developed by the developer Terra Soft, a release of Yellow Dog, written in Python, then called yup (Yellow Dog Updater), followed by

First unitIntroduction to Computer operating systemsWhat is the operating systemWhat is the kernel of the operating systemTwo operating system user interfacesPreparations for installing the Linux operating systemLinux distributions (CENTOS, RHEL,

The expect command, a language based on TCL, has the same intrinsic principle as the early chat;is a tool for automating the interaction between users and programs.First, expect grammatical composition:Expect can write a separate

Architect must read: Linux memory paging management Source: Linux enthusiasts Id:linuxhub memory is the main memory of the computer. Memory opens up the process space for the process, allowing the process to save data in it. I'll go into the details

A: What is RABBITMQ?As a Windows loyal user, we have to mention a service that comes with Microsoft's own msmq,windows, and the message is stored in the file system, which is the most primitive messages queue.Today's distributed and message

Linux disks and file systems?? When we get a brand new disk, we are not able to use it directly, but need to be partitioned, formatted, and mounted before the operating system can recognize and write and read the data. Different operating systems

Contact with Linux system operations for several years, often asked about the Linux system startup process problems, just today is free to comb this process:In general, all operating system start-up processes are basically:In general, the Linux

Lab environment: CENTOS7 virtual MachinesFirst create a normal user gubeiqing .[[email protected] ~]# useradd gubeiqing[[email protected] ~]# passwd gubeiqingChanging password for user gubeiqing.New password:BAD PASSWORD: The password is a

1. Find the IP address of the Linux systemEnter Command ifconfig2. Open the local network connectionSet the IP address of the VMNET1 to the IP of the same network segment as the virtual machine IPFor example, the virtual machine Linux system IP is 19

Problem: When you encounter a scene at work, you need to automatically sync the files on your Linux machine to your Windows machine on a daily schedule.The solution has two:1, set up the shared directory on the Windows machine, then mount the shared

Signal Concept The signal is software interruption. It can be used as a mechanism for inter-process communication. More importantly, the signal always interrupts the normal operation of a process and is more used to handle abnormal situations. The

Git is a distributed version control tool. This article begins with an introduction to git, focusing on the basic commands and usage skills of git, so that you can try to use git and experience the original one.Version control tools can have so much

Root @ gliethttp :~ # Netstat-PautActive Internet connections (servers and established)PROTO Recv-Q send-Q local address foreign address State PID/program nameTCP 0 0 *: vmware-authd *: * Listen 11341/xinetdTCP 0 0 *: NetBIOS-SSN *: * Listen

Http://apps.hi.baidu.com/share/detail/17204074 Getopt is used to parse command line option parameters. You don't have to write your own stuff to process argv. # Include Extern char * optarg; // parameter pointer of the optionExtern int optind, //

About the dlna framework   1. Networking & connectivity To solve the connectivity problem of physical devices, It mainly depends on Ethernet, 802.11, IPv4 protocol stack, and IPv6 protocol stack. The TCP/IP protocol stack must contain IPv4, TCP,