Linux

Excerpt from: http://miaozk2006.blog.163.com/blog/static/3824705820111028183996/First,/dev/shm/Introduction:/dev/shm/is a very useful directory for Linux because it is not on the hard disk, but in memory. Therefore, under Linux, it is not necessary

-----------------------------------------------------------------------in Ubuntu 10.4 Desktop and "root" Loginapt-get Install build-essential libncurses5-devapt-get install autoconfapt-get install libtoolapt-get Install Gettextapt-get Install

Echo is a more common command in Linux, especially in bash scripting, which is essential for its flexible use.In the man manual, the explanation is: Display a line of text, translation comes back or more popular point is to show characters or

top-c #任务管理器free-m #查看内存使用情况kill-9 2312 (description: Forced kill process kill-9 PID)df-h #查看磁盘使用情况 First, top1. RoleThe top command is used to display the program process in progress, and the permissions are all users.2. Format

A signal (signal) is a software interrupt that provides a way to handle asynchronous events and is the only asynchronous communication between processes. In a Linux system, the subsequent signaling mechanism is extended according to the POSIX

http://mogu.io/156-156SummaryThe first one is to discuss what tools we can use to assist the analysis when there are problems with the Linux system, and to discuss the possible points and ideas when the problem arises, and hopefully to introduce

Linux has a big impact on our lives. At the very least, your Android phone has a Linux kernel on it. However, starting Linux for the first time will only make you feel uncomfortable. Because on Linux, you should usually use terminal commands instead

Linux Read/write Fread/fwrite The difference between the twoThe 1,fread is buffered and read without buffering.2,fopen is defined in standard C, and open is defined in POSIX.3,fread can read a structure. Read in Linux/unix There is no difference

by Toradex HussamSome applications of the ARM platform embedded Linux have special requirements for system startup time. In many cases, these systems do not need to be immediately seated for all tasks, but must be able to handle certain

To create a process with the fork () function, how do you terminate a process?Process exits are categorized as normal exit and exception exit:Normal exit:1). Execute return in the main () function.2). Call the exit () function3). Call the _exit ()

Http://www.cnblogs.com/venow/archive/2012/11/30/2790031.htmlhttp://blog.csdn.net/denkensk/article/details/41978015Definition:　　The Epoll is an enhanced version of the Linux kernel for processing large numbers of handles and is a poll of the Linux

Compiled from: http://www.tecmint.com/cheat-command-line-cheat-sheet-for-linux-users/ Avishek KumarOriginal: LCTT https://linux.cn/article-3760-1.html Translator: Su-kaiyaoA slight change in the originalWhat do you do when you're not sure what

Tomcat server is a free open source Web application server, belongs to the lightweight application server, in small and medium-sized systems and concurrent access users are not widely used, is the first choice to develop and debug JSP programs. Like

In the development of operations we often encounter similar to "Socket/file:can" T open so many files, "Unable to open more processes", or coredump too large problems, which can be set resource constraints to solve. Today, when I was teaching a

Original: http://www.cnblogs.com/kerrycode/p/3595724.htmlWhen I think of the Linux system modified hostname is already very familiar with, today encountered a few problems, these questions give me a good lesson, a lot of knowledge points, when you

Differences between centos6.5 and VMware and Oracle VM VirtualBox I have been getting started with hadoop for some days. I have encountered many problems when I configured the hadoop preparation tool in the early stage. Today, I have recorded one

How to Use SMplayer to play WMV files in CentOS CentOS 6.6 is installed and you want to use it on the desktop! After installation, other office software is installed. However, a problem occurs during video playback. The SMplayer installed in the yum

Install 64-bit Google Chrome in Ubuntu 16.04 I recently updated the Ubuntu system to 16.04. I found some problems with the Firefox browser, but I was too lazy to install the plug-in to solve the known problems. So I decided to install Chrome.

Set iptables firewall whitelist in Linux (RHEL 6 and CentOS 7) Go to the Linux Command Line and edit the firewall rule configuration file iptables.Vi/etc/sysconfig/iptables The following is an example of whitelist settings: # Firewall configuration

Deploy an Apache Spark cluster in Ubuntu1. Software Environment This article describes how to deploy an Apache Spark Standalone Cluster on Ubuntu. The required software is as follows: Ubuntu 15.10x64 Apache Spark 1.5.1 2. everything required for