linux multicast example

tells Chkconfig the run level of the default startup and the priority of start and stop.If a service does not start at any run level by default, use-instead of run-level.The second line describes the service and can be commented on across lines.For example, Random.init contains three rows:# chkconfig:2345 20 80# description:saves and restores system entropy pool for# higher quality random number generation.Indicates that the random script should star

Tips for setting the Linux environment (JDK installation and Vi editor settings are used as an example)-Linux general technology-Linux technology and application information. For more information, see the following. Dragon tornado original Since Linux is an Open-source produ

permission. If you fail to correctly execute the following example after compiling, first, check whether you are not authorized to manipulate a device.Programming the internal speaker is part of the console, so the corresponding device file is/dev/console. The variable kiocsound is declared in the header file/usr/include/Linux/KD. h. The ioctl function can be used to control the speaker's voice. The usage

tells Chkconfig the run level of the default startup and the priority of start and stop.If a service does not start at any run level by default, use-instead of run-level.The second line describes the service and can be commented on across lines.For example, Random.init contains three rows:# chkconfig:2345 20 80# description:saves and restores system entropy pool for# higher quality random number generation.Indicates that the random script should star

Centos LVM is a mechanism for managing disk partitions in a Linux environment, a logical layer that is built on top of hard disks and partitions, under the file system, and improves disk partition management flexibility. RHEL5 the default installed partition format is the LVM logical volume format, it should be noted that the/boot partition cannot be created based on LVM and must be independent. Create Logical Volume PV PVCREATE/DEV/SDA1/DEV/SDB1 (s

Article title: Network Analysis example in Linux. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. Text: Yang Peng 　　 Data collection and analysis is essential when

PHP executes the Linux Command Line example-File compression, During work a few days ago, You Need To package three txt files into *. zip down to local ...... In the first place, I thought of ZipArchive built in PHP like a common young man. The code looks like this: /* Split the file into three txt files: wow_1.txt wow_2.txt and wow_3.txt */$ zip = new ZipArchive (); $ zipfile = '. /Exl_file/wow.zip '; if

Download ARM-LINUX-GCC 4.2.3http://code.google.com/p/princess-alist/downloads/detail?name=arm-linux-gcc-4.3.2.tgzcan=2q=Installing ARM-LINUX-GCC 4.2.3sudo tar xvzf arm-linux-gcc-4.3.2.tar.gz-c/The installation is now under/usr/local/armSetting environment variablesGedit ~/.profileAt the end of the open file, add the fo

$outputs array, and the *.zip file is generated successfully. About PHP execute linux command articles online search has a lot of, recommend one article:http://blog.csdn.net/yangjun07167/article/details/5603425 http://www.bkjia.com/PHPjc/1128381.html www.bkjia.com true http://www.bkjia.com/PHPjc/1128381.html techarticle PHP Implementation of the Linux command line small

Article title: Tcpdump command usage and example-linux network analysis. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. As the name suggests, TcpDump can completely intercept the "

for every senior system administrator to analyze the network and troubleshoot problems. Use and example of the tcpdump command-Network Analysis in Linux Introduction to network data collection and analysis tool tcpdumpAs the name suggests, tcpdump can completely intercept the "Header" of the packets transmit

Linux wget is a tool for downloading files, which is used at the command line. This is an essential tool for Linux users, especially for network administrators, who often download software or restore backups from remote servers to a local server. If we use a virtual host, we can only download from the remote server to our computer disk and then upload it to the server using the FTP tool. This is a waste of

point 2 Port SATA Controller [IDE mode] (rev 04 ) #硬盘接口 02:00.0 Ethernet Controller:realtek Semiconductor Co., Ltd. rtl8111/8168b PCI Express Gigabit Ethernet Controller (Rev 06) #网卡 03:00.0 PCI Bridge:integrated Technology Express, Inc. Device 8893 (rev 41)

3. Kernel versionIn addition to some kernel information, with the-v parameter uname can also get more detailed kernel version information (not the version number, refers to the time of the kernel and CPU architecture, etc.). # uname-v #1 SMP Tue Oct 12:57:43 EDT 2013 4. Node nameThe parameter-n gives you the hostname of the node. For example, if your hostname is "dev-machine", the-n parameter will print out the host name.

Http://blog.chinaunix.net/uid-22174347-id-1786939.html Embedded Linux in my line, mainly narrated and summed up in my study of embedded Linux in each step. One for summing up experience, two want to be able to get into embedded Linux friends to provide convenience. If there is any mistake, please correct me. Share resources, Welcome to reprint: http://hbhuangga

From: http://yblog.org/archive/index.php/11734 The biggest difference between an SSD and a general traditional hard drive is that its memory-to-life ratio is limited, and the fast Memory (flash memory) in the same data area) SSD memory uses a special algorithm built in the control chip to evenly distribute data to the fast-moving memory chip in different regions. For Ubuntu Linux, my Acer 3750g laptop is Ubuntu 11.04, sataii SSD 120 GB (sandforce SF-1

Example of the passwd command in 10 Linux As shown in the passwd command name, it is used to change the password of the System user. If the passwd command is executed by a non-root user, it will ask the current user's password and then set the new password of the user who calls the command. When this command is executed by the Super User root, You can reset the password of any user, including the user who d

Linux crontab Command Format and example Linux crontab Command Format and example Run */5 * every five minutes **** 0 *** per hour **** Execute 0 0 every day *** Execute 0 0 every week ** 0 0 0 1 per month ** Execute 0 0 1 1 * every year * For detailed usage, refer 1. RoleYou can use the crontab command to modify the c

/lib to Lib. (Note that the environment variables in Linux are separated, if libsqlite3.so. 0 to the current bin directory, you need to add this directory to the LD_LIBRARY_PATH path ). after such a tossing, the system finally found the correct libsqlite3.so. 0 file, the home page is fully open. The verification code is incorrect. If mono installed through the source code is not displayed, check whether the libgdiplus component is installed. If no,

(%s) awoking the readers.../n", CURRENT->PID,CURRENT->COMM); PRINTK (kern_debug "in write, before do Complete_all : Reader count =%d/n ", reader_count); if (reader_count! = 0) Complete _all (comp); PRINTK (kern_debug "in write, after do Complete_ All:reader count =%d/n ", reader_count); return count; } struct File_operations complete_fops={. Owner = This_module,. Read = Complete_read,. write = Complete_write,};int complete_init (void){int result;Result=register_chrdev (Complete_m