Linux

this week, many of the content is the analysis of the underlying information content, the students seem to be indefinitely, the teacher is basically to pick some key to say, take a note, I still according to the teacher, and then control bird

Date Kernel version Architecture author GitHub CSDN 2016-06-14 Linux-4.6 X86 & Arm Gatieme Linuxdevicedrivers Linux process management and scheduling A unique

I installed the WIN10 and Ubuntu dual system, found in Ubuntu mount Windows hard disk without the command chmod change the permissions of the file, the workaround is logged as follows:For an issue that uses the command $ chmod 777 dirname cannot

Using asynchronous notifications in device drivers can make access to the device accessible to the application by the driver when it is accessible. Therefore, applications that use nonblocking I/O do not need to poll the device for access, and

DNS subdomain and related authorization under Linux The forward feature is a domain name that cannot be resolved locally and is forwarded to the specified DNS serverForward only; All unresolved domain names are forwarded to the specified

When there is a problem with the Linux system, we not only need to look at the system log information, but also use a lot of performance monitoring tools to determine what part (memory, CPU, hard disk ...). ) out of the question. In the Linux system,

Host: CentOS 7,Install SendMail, start the sendmail, generally can, but some classmates why not, is the start does not move the following situation! So now how to solve.Yum Install SendMailSystemctl start sendmail.servicesystemctl status

This article describes the three commands that are used to view system resources in Linux: Top, free, uptime, learn their usage through examples, and refer to the friends who need them.One, Top command2. UseThe top command is used to display the

A gadget that displays IP geolocation information under Linux-naliFirst, IntroductionNali, the name is taken from the Chinese "where" pinyin. Nali contains a set of command-line programs whose main function is to attach the IP strings of the output

Development test Environment: virtual machine centos,windows Network debugging assistantNon-blocking mode has 3 uses1. Three-time handshake to do other processing at the same time. Connect takes a round trip time, from a few milliseconds of LAN to a

If you're looking for a very easy-to-use Linux performance monitoring tool right now, I highly recommend installing and using the Nmon command-line utility.Nmon Monitoring ToolsThe Nmon is a system administrator-oriented tuning and benchmarking tool

Lynis is an open-source system security Audit Utility tool that consists of a series of shell scripts that form a comprehensive security-check tool for systems, accounts, processes, and other levels of security risks and are listed in an intuitive

KVM Virtual machines also support the online expansion of the disk capabilities, online expansion has a specific use of the environment, mainly used in the production environment can not be stopped casually, this article takes Hadoop as an example

Background: Sometimes you need to look at the CPU and occupancy of a process, sometimes you need to look at a single occupancy of the overall process. I. Linux PS command to view CPU and memory usage of a process [[email protected] vhost]# PS aux

Let's Encrypt + Apache + Tomcat for free HTTPS and encrypttomcat Let's Encrypt is a free SSL Certificate release project. The issued certificate has been supported by mainstream browsers, including Google browser (desktop edition) and Firefox

Install the ftp server in linux and the linuxftp Server Ftp (file transfer protocol) Concept FTP is short for File Transfer Protocol (File Transfer Protocol ". It is used for controlling two-way transmission of files over the Internet. It is also

Install the PDF Reader Okular in Ubuntu Okular is a common document reader developed by KDE and also a free software. It can run on Linux, Windows, Mac OSX, and other Unix-like systems. It supports various file formats including PDF, XPS, ePub, CHM,

Mysql common operations: mysql backup and recovery, mysql backup and recoveryLog on to mysql = mysql-uroot-p to view the database version select version (); View DatabasesShow datases; view the current database select database (); view the current

Install Lazarus IDE 15.10 In Ubuntu 1.6 The Lazaurs editor is powerful and supports Code Completion, Automatic completion, template editing, multi-line Indent comments, and batch change the words in the code after code selection! Lazarus supports

Monitoring Zabbix using JMX to monitor Tomcat 1. Install the java tool on the zabix server (zabbix has been installed on the server) [Root @ db02 ~] # Rpm-ivhHttp://repo.zabbix.com/zabbix/2.4/rhel/6/x86_64/zabbix-java-gateway-2.4.7-1.el6.x86_64.rpm [