Welcome to Linux world! Introduction and Basic commands--Part one J.C 2018.3.11 Chapter 1 What Is Linux? Linux is a Unix-like open source operating system. At the core of the operating system is the Linux kernel. It acts as the intermediary between t…

Network Basic Commands Summary set or modify hostname a)     temporary ways hostname NEW_HOSTNAME, but if you reboot your system, it will disabled. b)    permanent ways: edit "/etc/sysconfig/network" HOSTNAME, then restart system, it will effect…

Just sharing what I have learned about postgres recently. Here is a part of basic commands you may need. Enjoy it! Before try the following commands, please ensure you are followed the introductions on github: https://github.com/thoughtworks/vagrant-…

1. man - an interface to the on-line reference manuals $man man 2. apt - advanced package tool SEE ALSO: apt-cache, apt-get, apt.conf, sources.list $apt-cache search mysql 3.sudo - execute a command as another user (sudo allows a permitted user to ex…

1.Linux目录系统结构  It makes sense to explore the Linux filesystem from a terminal window. In fact, that is the name of the first tool you'll install to help you on the way: tree. If you are using Ubuntu or Debian, you can do: sudo apt install tree Once i…

1.Basic Operations 5+6 3-2 5*8 1/2 2^6 1 == 2 %false ans = 0 1 ~= 2 %true ans = 1 1 && 0 %AND ans = 0 1 || 0 %OR ans = 1 xor(1,0) %ans = 1 PS1('>> '); %change the command prompt info a = 3 %show a = 3 in screen a = 3 %not show a = 3 in scree…

kafka-server-start.sh config/server.properties & kafka-server-stop.sh kafka-topics.sh    --create --zookeeper localhost:2181 --replication-factor 1 --partitions 1 --topic kafkatopic kafka-topics.sh --list --zookeeper localhost:2181 kafka-console-prod…

最近还没更完OpenCV又开了新坑,谁教machine learning处在紧急又重要的地位呢.更新的内容总结自Pattern Recognition and Machine Learning by Christopher M. Bishop,英文书哪里都好,不过有时候表达一个意思要写好大一段啊,所以内容上只保留了精华部分.考虑应该做ML通用英文,所以没有翻译,文章中一些重要的“请读者证明”和练习用的Matlab代码也会一并更新. Training phase (learning phase)…

[该系列是检讨计算机网络知识.因为现在你想申请出国.因此,在写这篇博客系列的大多数英语.虽然英语,但大多数就是我自己的感受和理解,供大家学习和讨论起来] 1 Network Edge The device such as computers and mobiles connect to the Internet. So they are referred as end systems(who run the application programs) sitting at the edge of…

switch to root : sudo su.su root.sudo -s switch to users : su god(user name) set root password : sudo passwd root check out kernel version : uname -r generate 'config.gz' file(the compressed package of '.config') : modprobe configs check the current…