Linux

The first is to use a Linux-brought Yum tool, such as the Yum search JDK, to search the JDK software, choose the search itself, and install it for your own software version. Like yum install java-1.7.0-openjdk.x86_64The second way is to download the

modification and login of SSH port under Linuxfirst modify the configuration fileVi/etc/ssh/sshd_configFind the #port 221 segment, here is the identity by default using 22 port, add the following line:Port 50000and then save the exit1. Port

OverviewUDP is the abbreviation of user Datagram Protocol, the Chinese name is the Subscriber datagram Protocol, it is a simple Transport layer protocol for datagram, and it is a kind of non-connected protocol for processing packets in the network.

1. Applications are composed of code snippets, data segments, BSS segments, and heap space, stack space.2. Layout method:(1) Code snippets at the lowest address, usually starting from 0x8048000, this is the virtual address, every application is like

What do embedded Linux learn? Are you really making it?What is embedded Linux to learn? Some people are always thinking, afraid of taking a detour, but also afraid of learning things from the enterprise needs far. So today please huaqing Visionary

Summarize:~~~~~~~~~~~~~~~~~~~~Fdisk-lPvcreate/dev/sdbVgextend Volgroup/dev/sdbLvextend-l +180g/dev/mapper/volgroup-lv_rootResize2fs/dev/volgroup/lv_root~~~~~~~~~~~~~~~~~~~1. Add a new hard disk to the client in VM WARE ESXi2, restart the client3.

Function prototypes#include void Qsort (void *base, size_t nmemb, size_t size, int (*compar) (const void *, const void *));Parameter description:Base: The starting address of the sorted arrayNMEMB: The number of elements to sortSize: A single

Linux Process View and management ( 2 )HtopInteractive commands:u: FilterS: a system call initiated by a process that tracks the selectionL: Show files opened by the selected processT: show the number of levels of a processA: of the Set process CPU (

Today we introduce the use of the Htop tool, which is a useful tool to see the system process, CPU utilization, memory usage and so on. For our ops, it can be used to quickly locate which process is causing the system to clog up, which processes

Linux multithreaded programming and Linux 2.6 under the NPTLOn Linux, from the kernel point of view, there is basically no difference between threads and processes-everyone is a process. Multiple threads of a process are just a few special processes

Linux screensaver and linux ScreensaverBy default, the screen saver is enabled for ubuntu in 10 minutes. I use ubuntu server12.04, because there is no desktop, only commands can be used. As follows: setterm-blank 0 // disable the screen saver

A linux system poisoning recordOn the company's linux server, we found that the cpu load was too high. Use top to see the abnormal process: ijcfwyjoqkThe parent process is init.Run: ps-l 10854. The cmd column is displayed as uptime.Run: whereis

How does a Linux system shut down a common user? Download and install the Ubuntu 14.04 server version. A common user is created during the installation process. After logging on to a common user, the shutdown, init, halt, and reboot commands cannot

8 tips for Git Git has become one of my daily necessities. I sum up the eight useful (and concise) tips I use every day. Use-p for selective Addition When you want to submit content, you can use git commit-am to select all files or use git add file

Configure multi-path in Linux 1. Install the multi-path software package:Device-mapper-1.02.67-2.el5Device-mapper-event-1.02.67.2.el5Device-mapper-multipath-0.4.7-48.el5 [Root @ RKDB01 Server] # rpm-ivh device-mapper-1.02.67-2.el5.x86_64.rpmWarning:

Notes on installing thunder Xware in Ubuntu 14.04 Thunder has never been out of the Linux version, and wine does not want to get it. Although there are a variety of btsoftware in Linux, I found that the speed is far below the speed of thunder, and

Usage of sed Parameters Use sed to copy/etc/passwd to/root/test.txt and print all rows with sed.Print 3 to 10 lines of test.txtPrint the row test.txt contains 'root'Delete 15 rows of test.txt and all subsequent rowsDelete the line containing 'bash

Linux Command (while, shell parameter usage) #! /Bin/bash while IFS =: read name1 name2 name3 name4 # IFS is the specified delimiter when reading content from a file: the separate parts are assigned to corresponding variables respectively. do echo $

Linux Command (use of-a,-o, not in find) Sudo find/etc-size + 1 M-exec echo {}\; # find and display files of a size greater than 1 MB in the/etc directory. The files are separated by line breaks. Sudo find/etc-size + 1 M | xargs echo # files that

Solution for Linux YUM unavailability in proxy surfing Background:The company's computer accesses the Internet through proxy. The next CentOS 6.5 _ 64 System in VMware, the network mode is NAT. You can ping the internet, but yum installation always