XiaochenCui

• The Little Schemer

XiaochenCui

DEPRECATED

This gist has been moved to https://cuixiaochen.com/posts/system-research-syllabus/ . The content in here will not be updated

The knowledge involved in distributed database systems (DBMS or HTAP).

Comments and suggestions are welcomed.

Why we need DBMS

XiaochenCui

# -*- coding: utf-8 -*-
"""
Spyder Editor

This is a temporary script file.
"""
# 这个程序将会处理一个页面

# 第一步：下载网页（人类：在浏览器中打开网页）
import requests

XiaochenCui

brew install gmp
brew install mpfr
brew install libmpc
pip install gmpy2

XiaochenCui

#!/bin/bash

LINE_NUMBER=${LINE_NUMBER:-1}
HEADER=""
ERROR_HEADER=("E" "F")
END_FLAG=false

print_message() {
    if [ -n "$MESSAGE" ]
    then

XiaochenCui

#!/usr/bin/env python
# encoding: utf-8
"""
@version: 1.0
@author: Mark Tao
@contact: [email protected]
@file: multi_download.py
@time: 2015/11/1 19:55
"""
from multiprocessing.dummy import Pool as ThreadPool

XiaochenCui

vim 中需要转义才能生效的 meta characters

• ()
• +

look around

meaning	perl	vim	remark
Matches the preceding atom with zero width	(?=pattern)	@=

XiaochenCui

[user]
	name = XiaochenCui
	email = [email protected]
[push]
	default = simple
[credential]
	helper = store
[alias]
	lg = log --color --graph --pretty=format:'%Cred%h%Creset %C(yellow)%d%Creset %s %Cgreen(%cr) %C(bold blue)<%an>%Creset' --abbrev-commit
	co = checkout

XiaochenCui

• du -hs /path/to/directory

  summarizes disk usage of a directory

• lsb_release -a

  check ubuntu version

• sudo /etc/init.d/nscd restart

XiaochenCui

rabbitmq-cheatsheet

rabbitmqctl

vhost

• rabbitmqctl add_vhost [vhost_name]

• rabbitmqctl delete_vhost [vhost_name]