Linux

CentOS双网卡双IP设置 系统环境：CentOS Linux network environment:  two IP addresses, 10.4.34.31 and 10.4.35.31, the Mask is 255.255.255.0, 这两个子网的网关地址分别是10.4.34.1和10.4.35.1。  1.  Configure the IP address 10.4.34.31 for the NIC eth0, configure the IP address for

The wget in a Linux system is a tool for downloading files, which is used at the command line. For Linux users is an essential tool, we often have to download some software or restore backup from a remote server to the local server. The wget

[Email protected]:~] $ls-lhiTotal 48K3684713-RW-------1 root root 5.9K Jul 1 00:23 anaconda-ks.cfg3684706-rw-r--r--1 root root 20K Jul 1 00:23 install.log3684707-rw-r--r--1 root root 2.1K Jul 1 00:22 install.log.syslog3684717-rw-r--r--1 root root 13:

Linux It is a system that can produce files automatically, log, mail, backup and so on. Although now hard disk cheap, we can have a lot of hard disk space for these files wasted, so that the system regularly clean up some unnecessary files there is

The 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 the specified directory

Excerpt from: http://blog.csdn.net/djzhao/article/details/8178375Linux about Readlink function get running path of small programRelated functions: Stat, Lstat, symlinkTable header files: #include Define functions: Int readlink (const char *path,

1, Pipe capacity650) this.width=650; "src=" Http://s1.51cto.com/wyfs02/M00/84/15/wKiom1eE5D7hkmXVAACpNBUbJIA249.png "title=" screen Shot 2016-07-12 at 20.14.24.png "alt=" Wkiom1ee5d7hkmxvaacpnbubjia249.png "/>2.6 Standard version of the Linux kernel,

First, the preparation of knowledgeLinux and Windows systems differ greatly in memory management mechanisms. In Linux often found that the free memory is very small, it seems that all the memory is occupied by the system, the surface of the memory

ffmpeg using Syntaxffmpeg [[options]['-i ' input_file] ... {[options] output_file} ... If there is no input file, then AV Capture (only works under Linux, because the audio and video device is handled as a file handle under Linux) will work. As a

Suppose the source program file is named TEST.c.1. No option to compile linksUsage: #gcc test.cRole: Pre-test.c, assemble, compile, and link the executable file. The output file is not specified here, and the default output is a.out.2. Option-OUsage:

1. View File inodeStat 1.txtWhat the hell is a 2.inode? The minimum storage unit for a hard disk is called "Sector" (sector), and a sector size is Five bytesThe operating system reads the hard disk, not a sector to read a sector, God, it is too

A requirement for a work item is to monitor the frequency of a certain gpio input square wave! Popular speaking is a most simple oscilloscope to measure the frequency of the square wave! But just the frequency of the square wave! The frequency range

IntroductionA timed task (cron Job) is used to schedule commands that need to be executed periodically. With it, you can configure certain commands or scripts to run periodically over a set period of time. Cron is one of the most useful tools in

Linux host shared directories can be implemented with SambaFirst of all, look at the encyclopedia on the introduction of samba:Samba is a free software that implements the SMB protocol on Linux and UNIX systems, consisting of servers and client

Linux comes with the unzip command to decompress compressed files in ZIP format under Windows.How unzip is not installed, can be installed under Yum: yum-y Install unzipUnzip commandSyntax:unzip [options] Compress file name. zipThe meanings of each

Compile: virtual memory exhausted: Cannot allocate memory, exhaustedallocateI. Problems When the system does not set the swap size or the memory size is too small when installing the virtual machine, the Compilation Program will encounter the

Cross-compilation summary libosscore. a libcurl. a libmysqlclient. a, libcurl cross-CompilationIt took a lot of effort to cross-compile the project files to run on arm. The first error was X uses VFP register arguments, B does not Baidu. It was

JSHint-Use of javascript syntax checking standard tools and integration with Sublime 1. Install jshint of nodejs Install the Node. js Environment Install nodejs jshint [4] csshint Ii. install and configure jshint in sublime

Collect comprehensive system information in Linux (based on sosreport and supportconfig) Log collection and analysis in Linux is a very important task. Generally, the vendor has its own commands, here I will list the common collection commands of

Inter-process communication (4)-shared memory, Process Communication shared memory I will use several blogs to summarize several methods of communication between processes in Linux. I will write the summary at the beginning in each blog of this