Query port usage in Linux

Original post address: http://sopace.blog.51cto.com/1227753/370370 Today, we found that Tomcat port 8080 is unavailable on the server and the port is occupied.Run the following command:PS-Aux | grep TomcatTomcat process with no port 8080 is found.

Linux kernel header file

Is LFS tired? OK. Let me talk about a gossip story first, relax and take another risk... In the pure Linux 2.2/2.4 era, the kernel header file has always maintained the "kiss" tradition in the Unix world. You only need to copy the header file in

Nic configuration Linux Manual

1. Configuration File/Etc/hosts (the local host IP address ing can have multiple aliases )./Etc/services (correspondence between port numbers and standard services ). /Etc/sysconfig/Network (set the host name, gateway, and domain name ).Hostanme =

Linux deployment problems

The switch monitoring deployed yesterday had no clue at first, because it was the first time to get these things. Later, the mentor taught me how to do it !! The first step is to write the script setenv for setting environment variables. sh. This

Linux "zero copy" sendfile Function Description and Actual Operation Analysis

Sendfile Function Description # Include ssize_t sendfile (INT out_fd, int in_fd, off_t * offset, size_t count); sendfile () is the operation function used to copy data between two file descriptors. this copy operation is operated in the kernel, so

Linux Server Performance Evaluation and Optimization

Reprinted: http://www.517sou.net/Article/104.aspx   I. Factors affecting Linux server performance 1. Operating System Level CPU Ø memory Ø disk I/O bandwidth Ø network I/O bandwidth 2. Application-level   Ii. System Performance Evaluation Criteria

Linux File and Content Search (recursive), grep, find

Content Search (recursion) Grep/etc/httpd/modules/-LR '51ditu '* File Name Search (recursive, not suitable for modules search) Find/etc/httpd/-name httpd. conf   Reference: GrepCommand is used to searchPatternThe mode specified by the parameter, and

Study on Linux Coding

  For Linux users in China, it is a problem that the system often displays garbled characters when it needs to display Chinese characters. For some reason, when it needs a system with an English interface, however, the system cannot normally input

Linux \ Unix IPC process Communication

The original post of a series of articles about Linux IPC published on the IBM developerworks website is a series of articles by Zheng yanxing, I have demonstrated the use of several IPC methods in Linux Through Explanations and examples. I think it

Connect to e680i on Linux

Linux: Gentoo Kernel: 2.6.15 Confirm your kernel support usblan, ACM modem and usbnet zaurus feature.In my Linux config files:/usr/src/Linux/. config files:Config_usb_belkin = yConfig_usb_net_zaurus = mConfig_usb_acm = m Connect the e680i on the

Solution to the 530 error of FTP connection in Linux

This problem often occurs at work. When you log on to a Linux server using FTP commands on Windows, the following message is displayed: 530 must perform authentication before identifying user. After searching online, I finally found a solution.

How to compile debug and release in Linux

If it is debug, add the parameter-ddebug and release' without this parameter. Generally, the debug version is used in the development and testing phase, and the release version is used for release. You can use makefile to customize and compile

How to use quota in Linux

Java advanced exchange group: 37341439 (1000). You are welcome to help and learn from each other. 1 first, make sure that the directory to be restricted is a separate file system. DF-H/home test 2. For a separate file system. You need to add quota

Linux Hardware Detection

Http://lidu678.blog.163.com/blog/static/898060062010112010421532/ computer system is composed of software system and hardware system. Checking the hardware status is very important to ensure the stability of the entire system. Whether the operating

Two Hard Disk Bad Track repair methods in Linux

Address: http://tech.ccidnet.com/art/302/20031106/70263_1.html If a bad track occurs on the hard disk of a computer, if it is not replaced or processed in time, the number of bad tracks will increase and cause frequent crashes and data loss. If a

View and modify programs that run automatically after Linux is started

Source Address: http://blog.chinaunix.net/uid-24690947-id-3064955.html   I, 1. automatically run the program at startup After Linux is loaded, it initializes the hardware and device drivers, and then runs the first process init. Init starts other

Convert the encoding format in Linux

Convert formats in Linux // Create a CD handle firstIconv_t CD;// Then initializeCd = iconv_open ("UTF-8", "Unicode"); // The first parameter is the converted encoding, and the second parameter is the encoding to be converted, which here is

Four processes of GCC programming in Linux [reprinted]

Source: Linux community Author: Fu Dapeng 2008 To program C in Linux, you must use GNU gcc to compile C source code to generate executable programs. 1. GCC Quick Start The general format of GCC commands is: GCC [Option] file to be compiled [Option] [

Linux driver MAKEFILE file Analysis

  Linux Kernel is a single kernel, but it is flexible and convenient to develop by dynamically loading modules. So how does it compile the kernel? We can start by analyzing its makefile. The following is a simple makefile for the hello kernel module.

Chatting with input devices in Linux (1) large family of Linux Devices

All Linux devices are implemented in the form of files and need to access a device, you only need to operate the device in the form of open, read, and write. In the/dev directory of the Linux system, all devices supported by the current system are

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