Linux

When there are coding in Linux and winows, there are some problems when porting code.1. Are you allowed to do this? About clock () timing functionsThe first is a simple test code that reads the data from a text file and assigns a value to the run

This section describes how to burn bare-metal programs using Oflash and Openjtag. Oflash also supports parallel-burning writing, similar to Openjtag. If you want to use Jlink burn write, need to install Segger J-flash tools, here we do not introduce

During system maintenance, it may be necessary to review the CPU usage at any time, and to analyze the system condition according to the corresponding information. In CentOS, you can view CPU usage by using the top command. After running the top

. tarUnpacking: Tar xvf Filename.tarPackage: Tar cvf filename.tar DirName(Note: Tar is packaged, not compressed!) ）---------------------------------------------. gzDecompression 1:gunzip filename.gzDecompression 2:gzip-d filename.gzCompression: gzip

Redhatlinux is currently the most used Linux operating system in the world. Because it has the best graphical interface, whether it is installation, configuration or use is very convenient. Below I will cover the installation of Redhat Linux 9

Reprinted from: 16 Linux Server monitoring commands you need to knowIf you want to know what your server is doing, you need to know some basic commands, and once you've mastered these commands, you're a professional Linux system administrator.Some

recently has been learning Qt, using QT to write a program, but do not know how to publish, online is to say in Windows How to publish Qt application, but under Windows QT application depends on the library files and Linux under the name of

Virtual Linux cluster building based on VMware-lvs+keepalivedIn this paper, the load balancing between Lvsserver and real server is realized by keepalived. This aspect of the blog is quite a lot, but each person to build a cluster of different

Linux view machine is CPU is a few coresSeveral CPUsMore/proc/cpuinfo |grep "Physical ID" |uniq|wc-lEach CPU is a few cores (assuming the same CPU configuration)More/proc/cpuinfo |grep "Physical id" |grep "0" |wc-lCat/proc/cpuinfo | grep processor1.

Generate key:$ ssh-keygen-t Dsa-p "-F ~/.ssh/id_dsa$ cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keysthe -t key type can be specified with the-t option. If not specified, the RSA key for SSH-2 is generated by default. -f filename Specifies the key

Reprinted from Http://blog.chinaunix.net/uid-26669729-id-3077015.htmlOne. Mmap system call1. Mmap system callMmap maps a file or other object into memory. Files are mapped to multiple pages, and if the size of the file is not the sum of the size of

Chown to change the main or owning group of a fileChange file owner: #chown Zek 123.txt (Zek is the name of the owner)#ls-L 123.txt-rw-rw-rw-1 Zek Root 12777 December 4 20:31 123.txtChange file to group such as: #chown: User1 123.txt# ls-l

Use FetchXML to create a Dynamics CRM Online Advanced Report Today I will share with you an article on report production. Today we do not use SQL statements for reports. We use FetchXML for reports. This test environment is Dynamics CRM Online. You

When QEMU is started, the tap virtual network card and qemutap virtual network card are inserted. 1. Use the brctl command to create a virtual bridge br0 Brctl addbr br0 Ifconfig br0 up // the preceding two commands are executed separately,

How to compile the Opus audio codec library for AndroidThe Opus audio codec library is the next generation of the Speex audio codec library. It has made great progress in terms of codec performance and quality. Opus compilation is very simple, but

CentOS configures firewall operation instances (enable, stop, enable, and disable ports) and centos instances Basic firewall operation commands Query the Firewall Status: [root @ localhost ~] # Service iptables status Stop firewall: [root @

Install anti-virus software clamav in centos 6.5 1. Install the clamav File 1. Use the rz-y command to upload data to the/usr/local/src directory. 2. Create a clamav group groupadd clamav 3. Create a clamav user useradd-g clamav 4. decompress the

CentOS6.5 install and use the data recovery software extundelete I,Install (1) first extundelete software depends on e2fsprogs e2fsprogs-libs e2fsprogs-devel Software Package (2) download extundelete, the official website is

OpenvSwitch Port Mirror in OpenStack Neutron Preface I recently built an OpenStack Environment Based on VXLAN and found that the package to dump ovs interfaces is still quite troublesome. After many efforts, find some trouble shooting methods in

Deployment of Zabbix server monitoring tool in Ubuntu Deployment of Zabbix server monitoring tool in Ubuntu 1. InstallationInstall Apache, Mysql, Php, and zabbix Sudo apt-get updateSudo apt-get install apache2 mysql-server libapache2-mod-php5