ozobot lessons

Tags: Linux notesSeven weeks two sessions (March 20)10.6 Monitoring IO Performance10.7 Free Command10.8 PS Command10.9 Viewing network status10.10 Linux under Grab BagExtended TCP three-time handshake four times wave http://www.doc88.com/p-9913773324388.htmlTshark several usages: http://www.aminglinux.com/bbs/thread-995-1-1.htmlInstalling the package Sysstat will install the Iostat. And SAR are the same package.%util is the percentage of waiting IO. The hard disk can affect the performance of th

10.11 Linux Network relatedIfconfig-a can display the disabled or down network card;Start the network card #ifup ens33; Disable the network card #ifdown Ens33;Nic configuration file/etc/sysconfig/network-script/ifcfg-ens33Copy Create virtual network adapter profile, #cd /etc/sysconfig/network-script/#cp Ifcfg-ens33 ifcfg-ens33\:0#vi!$10.12 Firewalld and NetFilterGetenforce View firewall status;10.13 NETFILTER5 Table 5 Chain IntroductionView NetFilter instructions, #man netfilter;10.14 iptables S

connect the MONGO from the library. (2) When deleting the MONGO table in hive, remove the jar package configuration in Hive-site.xml, and after disconnecting the Hive table from the MONGO, be careful! If you keep driving and drop directly, the table data in the MONGO will be drop. The most important thing is that your ops should do the right configuration of MongoDB in advance and give read-only permission to prevent misoperation. (3) in general, as long as the configuration is good, this plu

After learning about the advantages of the open-source RDBMS Relational Database Management System, you have installed the MySQL database to provide registration, subscription, and e-commerce services for Web applications. Database reliability alone

This is a created article in which the information may have evolved or changed. This Morning + Noon toss fast 3-hour routing module Crazy failure, how to change are 404, in the near despair, group master help find out the problem: Import Guide

What are the 40 common mistakes of PHP programmers ?, Bad habits of programmers. What are the 40 common mistakes of PHP programmers ?, Bad habits for programmers 1. do not write comments 2. do not use IDE tools that can improve production efficiency

Old article Looking at the development of the global virus, it is not difficult to find that the worm virus has made the anti-virus market a hit. Worms are easy to handle, such as kurniova, Sircam, red code, blue code, and bin Laden. They are more

The Tutorial at (www.bkjia.com) hopes that you will develop good naming rules when designing programs, even if you are doing a Demo, otherwise the error may make you creazy! Which of the following is my reference material! An extremely simple

C. Greg and Arraytime limit per test 2 secondsMemory limit per test 256 megabytesInput Standard inputOutput Standard output Greg has an arrayASignature = SignatureA1, bytes,A2, middle..., middle ,...,ANAndMOperations.Each operation looks:LI,RI,DI, (1

Chapter I and Chapter II Basic OC syntax IPhone development tutorial Chapter 1 Basic OC syntax iPhone development overview-required (1.1)Http://www.apkbus.com/android-102215-1-1.htmlChapter 2 installation and introduction of development tools for

Do not ignore any words that the customer has said-if it is through email communication, you should carefully analyze each sentence when receiving the customer's email, and think deeply about the customer's thoughts behind the request, only by

This article is translated from a gigaom article. The original post address is Jonathan boutelle, one of the CTO and founders of the famous site slideshare. Cloud computing is a powerful tool for startups, because they can have almost unlimited

1. The project manager must pay attention to the three criteria for successful projects. Simply put, one is punctuality, the other is budget control within the established scope (within budget), and the third is quality approved by managers and

I want to write it earlier than today. Case 1: No error is reported when accessing the JSP project and webpage, but no display is displayed. There is no error in the IDE syntax check for the white one. Cause: javascript . If is used, this

A major system upgrade was recently conducted. Because there are many database scripts to be executed during the upgrade, a script that should not be executed was accidentally executed during the release. Although we promptly remedy the problem

The speech is recorded as follows: Today, we can see that many of our members are old friends, including those from the media and investment companies, the first purpose of this meeting today is to discuss practices from traditional media to new

This time, the old database has about 0.3 million records. I did this for the first time and didn't think too much about the efficiency. This was implemented with the help of a friend. It took about two hours to complete the process (CPU: Sai Yang 3.

In the process of technological updates, there are still some people holding things that have passed through the air. some people enter the new world, but they still cannot get rid of old habits. I didn't use the word "bad habits", because I am also

Http://blog.csdn.net/oldjwu/article/details/4329401 Python reads a row of files each time. Classification: Python Read by 1612 Comment (0) Favorites Report Note that each time Python reads a row of a file, there are two possible methods:    

Myth 1: A good idea will make you a lot of money The fact is that good ideas are neither adequate nor necessary for commercial success. Microsoft should be a typical commercial success, but it cannot find a completely original "Good idea"