Linux

Netstat command to display network statisticsThis command is used to display the entireNetstat-anpP Display name namesKill-9 Process NumberTraceroute Show Packet HistoryWhat shell does the query system have?Cat/etc/shellsNetwork card IP DNS address

Personal security background development, of course, is in the Linux environment. Give a few common questions.1. Data Structure Foundation. For example, implement a simple hash table.2. Operating system basics. The Linux process model, the

DMA programmingDMA is a hardware mechanism that requires no CPU to participate in two-way data transfer between peripherals and system memory, using DMA to get the system CPU out of the actual I/O data transfer process, thus greatly improving the

First, the basic knowledge.1: Normal IO type.1, non-blocking IO: Issue IO operations such as open/read/write, and make these operations not permanently blocked. When it cannot be completed, an error is returned immediately.1) non-blocking two kinds

January 27, 2015 The gethostbyname function of the Linux GNU glibc standard library burst into a buffer overflow vulnerability, with the vulnerability number cve-2015-0235. The hacker can realize the remote code execution through the GetHostByName

1, without root, add ordinary users, through sudo authorization management.2, change the default remote connection SSH service port and disable the root user remote connection.3, scheduled automatic Update server time4, configure the domestic Yum

Linux under SVN command use Daquan (share)Transferred from: http://blog.chinaunix.net/uid-22566367-id-1965771.html1. Checkout files to a local directorySVN checkout Path (path is a directory on the server)Example: SVN checkout

Other common commandscd+ return = carriage return ~ Enter the current user home directoryTo view the specified process information#ps-ef |grep Process Name#ps---to see your own processes#ps-aux View the execution process for all usersChange to

10 days to learn the Nineth day of the Linux kernel---Add code to the kernelSleep a good sleep, very late, for a long time not so comfortable, today's task is not heavy, so the pressure is not big, oh, the weather is really cold, but the laboratory

Usually small businesses or school units have only one external online, and then all the computers in the company through this online connection to the Internet, at this time we need to use the IP-sharing device to share the external to all the

Tcpdump is a tool for intercepting network groupings and outputting grouped content, which is simply the packet capture tool. With its powerful capabilities and flexible interception strategy, tcpdump is the preferred tool for network analysis and

All of the devices and files in Linux are manipulated using file descriptors.A file descriptor is a non-negative integer that is an index value that points to the record table opened by each process in the kernel.When a file is opened or a new file

lsRelated commands: DirThe LS command is the most commonly used command under Linux. ls command is the abbreviation of the list, the lack of saving LS used to print out the current directory of the list, if LS specifies a different directory, then

One, register character device[CPP]View Plaincopy #define GLOBALMEM_MAJOR 256 #define Globalmem_size 0X1000//4k static int char_major=globalmem_major; Main device number struct CHARTEST_DEV { struct Cdev cdev; unsigned char

Winter vacation idle down, can enjoy doing their favorite things, concentrate on the lab in the dry up, because when the sophomore contact Linux, just about the kernel is really not understand, so 10 days still hope to be able to add the Linux

Original URL: http://www.cnblogs.com/geneil/archive/2011/12/08/2281222.html1.mmap system Callvoid *mmap (void *addr, size_t len, int prot, int flags, int fd, off_t offset);Function: Responsible for mapping the contents of the file to the virtual

Install weblogic12C (Silent Installation) on Linux (1) and linuxweblogic12c Recently, weblogic was installed on linux. The leader said that the latest version should be installed. The version number is 12.1.X. At first, we thought that we were using

Centos7 epel source configuration For CentOS6, edit/etc/yum. repos. d/epel. repo and enter the following

Launched Linux Mini PC! Good news: Linux players have finally ushered in spring! Recently, ComputeLab launched a super-Mini Linux desktop PC product, which is MintBox Mini! Specifically tailored for Linux systems. Linux players no longer have to

Install Hadoop2.4.0 in Ubuntu 14.04 (standalone Mode) 1. Create a Hadoop group and hadoop user in Ubuntu Add a hadoop user group and add a hadoop user in this group. We will use this user in subsequent hadoop operations. 1. Create a hadoop User