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Putty

Host:maria_dev@127.0.0.1 
Port:2222

List of commands:
hadoop fs

hadoop fs -ls
hadoop fs -mkdir ml-100k

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pip list
pip list --local
pip freeze -> prints all installed library

python -m pip install findspark

jupyter notebook
Shift+Enter : run notebook​ cell
Shift+Tab : opens documentation
.Tab : code suggest

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npm install -g create-react-app

create-react-app name
npm start

It puts fake HTML in javascript

To enable emmet: change VS Code Settings
"emmet.includeLanguages": {
        "javascript": "javascriptreact",

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LEARN KUBERNETES BASICS:

Create a Cluster:

minikube version
minikube start
kubectl version
kubectl cluster-info
kubectl get nodes

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1.Validate HTML/CSS/JavaScript
2.Minify CSS/JavaScript
3.Compile Typescript or CoffeeScript to JS
3.Compile LESS to CSS

Webpack to bundle or compile javascript into a single minified file that works in the browser.

npm install -g grunt-cli
npm install grunt --save-dev
npm install grunt-contrib-clean --save-dev

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Vim editing:

vi test.txt
i to insert
:w to save
:q to quit
:wq to save and quit

Shift+zz - Save the file and quit

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docker info
docker version
docker image ls
docker images == docker image ls
docker run hello-world
docker ps
docker ps -a
docker top
docker service ls
docker service inspect NAME

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apt-get update
apt-get install nginx
ps  aux | grep nginx
ls -l /etc/nginx/
clear
service nginx start
tar -zxvf nginx-1.17.2.tar.gz
wget http://nginx.org/download/nginx-1.17.2.tar.gz
cd nginx-1.17.2
apt-get install build-essential

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airflow needs a home, ~/airflow is the default

export AIRFLOW_HOME=~/airflow

install from pypi using pip

pip install apache-airflow

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How to download Kafka ?

curl "http://mirror.metrocast.net/apache/kafka/0.10.2.0/kafka_2.12-0.10.2.0.tgz" | tar xz

How to start a zookeeper ?

Windows: