Geek Wagner

Step 1: Install Redis: >sudo apt-get install redis-server Step 2: Configuration >sudo vim /etc/redis/redis.conf Change the following lines maxmemory 128mb maxmemory-policy allkeys-lru Step 3: Restart service sudo service redis restart Step 4: You may try the following commands to see if the redis is working properly Monitor redis-cli monitor Command line tool redis-cli Clean cache flushall

Please note that here we use socks5h instead of socks5. socks5h is a specified version of socks5 which means solve host name via proxy too. export http_proxy="socks5h://192.168.31.114:1081" export https_proxy=$http_proxy

In some LAMP server, you may be confused that mysqld service cannot be found. For example, when using the command: > sudo service msyqld restart It just failed and said something like mysqld.service didn't exist. When this happens, please try: >sudo service  mariadb restart Hope this will help.

When using a script browserified from a react project, I encountered an error said: Invariant Violation: Target container is not a DOM element. It confused me for a while. After I moved the HTML script label from head to the end of the body , the problem was solved. It seems that when the script was executed, the related dom element had not been loaded yet. Then I tried ready function from jQuery, it also works. So when get this kind of error, try to check the position of the script.

1. Install NodeJS >sudo apt-get install nodejs nodejs-legacy 2. Create a project using npm >npm init 3. Install React >npm install --save react react-dom 4. Install Babel and plugins > npm install --save-dev grunt-babel > npm install babel-preset-env --save-dev > npm install --save-dev babel-plugin-syntax-jsx The last command line is for JSX which is highly recommended by React. 5.Config .babelrc { "plugins": ["syntax-jsx"], "presets": [ ["env", { "targets": { "chrome": 52, "browsers": ["last 2 versions", "safari 7"] } }] ] } 6.Install Grunt and plugins >npm install -g grunt-cli >npm install grunt --save-dev >npm install grunt-contrib-jshint --save-dev 7. Config Grunt file module.exports = function(grunt) { // Project configuration. grunt.initConfig({ pkg: grunt.file.readJSON('package.j...

Step 1. Install sudo apt-get install proxychains Step 2. Config port sudo vim /etc/proxychains.conf Step 3. Usage proxychains <your command>

Setting up username and password First, check your /etc/mongod.conf to confirm it is not in the auth mode. Add comment symbol '#' of the following code and restart mongod service: #security:   #authorization: enabled sudo service mongod restart Then, Connect to local mongodb: mongo --port 27017 Switch to admin database: use admin Create admin user: db.createUser({ user: "admin", pwd: "<your password>", roles: [{ role: "userAdminAnyDatabase", db: "admin" }] }) Grant Roles: db.grantRolesToUser('admin',[{ role: "root", db: "admin" }]) Check if successfully added (should return 1): db.auth("admin", "<your password>") Exit mongo client: exit Enable the auth mode in your /etc/mongod.conf by activating the following lines and then restart the service: security:   authorization: enabled sudo service mongod restart Go back to...