Linux

Method One:ifconfig eth0 IP Address netmask gateway----If not set, use the default maskNote: This method is only temporarily modified to restart the network or the server will be restored.Method Two:Vi/etc/sysconfig/network-scripts/ifcfg-eth0

View values for all kernel variablesSysctl-aHow to view the value of a system variable 1), Cat/proc/sys/net/ipv4/ip_local_port_range32768 610002), Sysctl-a | grep ip_local_port_rangeNet.ipv4.ip_local_port_range = 32768 61000Modify the method: 1),

What is SSH?SSH to Secure ShellDeveloped by the network Working Group of the IETF (Working Group);SSH is a security protocol based on the application layer and the transport layer.SSH transmission data is encrypted , can effectively prevent the

This article extracts from here, in the original, the MySQL InnoDB system as an example, introduced the data through the various levels of buffer and cache, other systems have similar principles, excerpt from this.3. VFS LayerThe buffer of this

awk Data processing tool (field)awk ' condition type 1{action 1} condition type 2{action 2} ' filenameLast-n 5 | awk ' {print $ ' \ t ' $} 'First column, third columnLast-n 5| awk ' {print $ \ t lines: ' NR ' \ t columes: ' NF} 'NR deals with the

Shutdown commandHalt-pPoweroffInit 0Shutdown-h nowRestart commandInit 6RebootShutdown-r now or Shutdown-r +10 10 minutes after restartShutdown-c canceling a scheduled boot or shutdownTouch Create Filemkdir Create folder-P create multilevel

1. Explanation of the principleThe Linux kernel incorporates a memory paging model for both 32-bit and 64-bit systems, and for 32-bit systems, the two-level page table is sufficient, and in the x86_64 system, a four-page table is used, and 2-1 is

Objective: To summarize the basic usage of common commands in Linux.Document actions: Toggle file Directory command: CD Switch to the specified directory file: CD/(Switch to the root directory, similar to Windows with the mouse to select the

Time to do a summary of the synchronization between all threads of Linux (native), including the following:1, Mutex2, Condition variable3, Reader-writer Lock4, Spin lock5, barrierMutexes are the most common way of synchronizing between threads, and

Recently, ubuntu14.04 was installed under windows8.1, sleeping in Windows. Open time and enter the option to enter the system at that time did not attract attention. He chose to enter the Linux system. But after entering, found unable to enter

GNU Linux high concurrency performance optimization solution, gnu Performance Optimization /**************************************** ******************* * Author: Samson* Date: 07/14/2015* Test platform:* Gcc (Ubuntu 4.8.2-19ubuntu1) 4.8.2* GNU

Batch clear tomcat logs and linuxtomcat logs in linux The original connection is: http://blog.csdn.net/freewebsys/article/details/46874839 reprint please must indicate the source!1. Directly delete the file Find/tomcat/logs/-name '*. log. *' |

Upgrade and install PHP 5.5 and yum5.5 in yum in Linux From: http://blog.aboutc.net/linux/50/yum-install-php-on-linuxSystem Environment: CentOS 6.4 x86_64 Fedora 20 x86_64 If the source of PHP already exists in Fedora 20, run the following

How to Use Samba shared folder on Fedora or CentOS (1) Nowadays, sharing folders between different computers at home or in the office is nothing new. Under this trend, modern operating systems use network file systems to make data exchange between

Internal OA system: Nginx + Keepalived for high site availability (1) The company's internal OA system must be highly available online to avoid single point of failure. Therefore, two virtual machines are planned to use the Keepalived tool to

12 best free network monitoring tools (1) To make a multi-level organization run well and run smoothly, a very arduous and important task is to do a good job of network management. Each organization is staffed with dedicated personnel, namely,

Notes: Ubuntu14.04Monodevelop Installation Problems1. Monodevelop cannot run. The error "The assembly mscorlib. dll was not found or cocould not be loaded" is displayed. First, check whether the mono installation is complete. The possible cause is

Simple word statistics in C & Linux /* Function implementation: Reading English words from text documents may contain Chinese characters, Statistics on the number of English words and Chinese characters   Author: He rongwei Creat Time: Friday   #

Install memcached in Linux source code Basic steps: 1. Download the compressed file (wget File url) 2. Decompress (tar-zxvf file name) 3. configure (./configure -- prefix = installation directory) 4. make compilation (only if step 3 is correct;

A Linux disk corruption causes the system to fail to recover the instance. After the Linux operating system server is restarted, an error is reported during system startup, and the system cannot be used normally.1. error message 1.1 and error