Linux

With the gradual rise of Linux, there are already a large number of programs in the above gallop, many development environments (Development environment) also emerged. A good development environment must be a combination of editing, compiling and

Some common shutdown/restart commands under Linux. 1.shutdown The shutdown command shuts down the system securely.It is very dangerous for some users to turn off Linux by simply breaking the power off. Because Linux differs from windows in that it

A few days ago Win32 under the Speex AEC (http://blog.csdn.net/sunkwei/archive/2011/05/18/6429096.aspx), very complex, today to try to make alsa under, found very simple AH!!! First of all, put on the Audacity effect chart: The code is simple,

In general, Ubuntu with the tar command, can be used for decompression and compression. But we often have to deal with win under the user, so to install some decompression tools such as: RAR zip and other commands. If you need to use a zip tool,

A command that provides help in a Linux system. In layman's terms it is the Manual of command.It's a total of nine chapters.1. User commands2. System call3. C Library Call4. Equipment files and special documents5. Configuration file format6. Games7.

Common types of Linux files: normal files, directory files, character device files and block device files, Symbolic link files1.1.Normal file(-) LS-LH to see the properties of a file, you can see a similar-rwxrwxrwx, it is worth noting

#!/bin/bash date= ' date  "+%f %t" ' head= "system information as of:  $date"  kernel= ' uname -r ' hostname= ' echo  $HOSTNAME '   #Cpu  loadload1= ' Cat /proc/loadavg  | awk  ' {print $1} ' load5= ' cat /proc/loadavg | awk  ' {print $2} ' Load15= '

lsof Command IntroductionLsof (list open files) is a tool that lists open files for the current system. In a Linux environment, everything is in the form of files, with files that not only access regular data, but also access to network connectivity

Linux directory structure(1) Return to parent directory: CD. 进入你的home目录：cd ~ 使用pwd获取当前路径：pwd(2) Linux file 11 selected 5 source code to build basic operation: Enterprise E: 217 1793 408① Create a new blank file Eg:touch test if you switch to your

1. Case 1:linux Basic protection measures2. Case 2: Assigning administrative rights with Sudo3. Case 3: Improve SSH service security4. Case 4:selinux Safety Protection1 Case 1:linux Basic protection measures1.1 QuestionsThis case requires practicing

Real-time monitoring-network monitoring: netstat-netstat command for displaying native network links, running ports, routing tables, and moreNetstat parameter description:-N: Reject display aliases, can show all numbers converted to digital-L: Lists

CMP command: Compare any two types of files, and the results output to the standard output, the default file is the same output, different file output differencesNecessary parameters-C Display different information-l list all the different

First, installation and landing commands1. Enter the graphical interfaceStartX2. Enter the graphical interfaceInit 53. Enter the character interfaceInit 34. LoginLogin5. Shut down the machinePoweroff-P Turn off the power when shutting down the

1. Brief description of common service portsAnswer:http:80 ftp:21 dns:53 pop3:110 smtp:25 ssh:22 nginx:80 squid:3128 nagios:5666memchached:11211 mysql:3360 tomcat:8080 nfs:2049 tlenet:23 https:443 samba:udp 138 TCP 139postfix:25 imap:143 zabbix:10051

An execution path (routine) in a program is called a thread. A more accurate definition is that the thread is "a control sequence inside a process". All processes have at least one thread of execution.Processes and ThreadsProcess is the basic unit

The two softwares used in this class are putty, XshellPutty:https://the.earth.li/~sgtatham/putty/latest/w64/putty.zipxshell:https://www.netsarang.com/download/down_form.html?code=622Note: Putty is a green, free installation software. Xshell Software

Ansible automated operations tools with the following features1. Modularization: Call a specific module to complete a specific task2, have paramiko,pyyaml,jinja2 (template language) three key modules3. Support Custom Module4, based on Python

1, NAT (network address translation mode) (recommended) The use of NAT mode is to let the virtual system with the use of NAT, the host's network to access the public network. in this mode, the host becomes a dual-NIC host, while participating in

1, install the FTP service, you can directly yum install VSFTPD.2, set the random start, Chkconfig vsftpd on.3, start the FTP service vsftpd start.4, configure Nginx static resource redirection.Let's say we store a static resource file in our custom

Briefly describe the problem: as the company's servers more and more, personnel mobility is also beginning to grow, the old Management Server should abandon the idea, the company needs to have a better and more perfect authority system, after many