P7h

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### Shell script to download Oracle JDK / JRE / Java binaries from Oracle website using terminal / command / shell prompt using wget.
### You can download all the binaries one-shot by just giving the BASE_URL.
### Script might be useful if you need Oracle JDK on Amazon EC2 env.
### Script is updated for every JDK release.

### Features:-
# 1. Resumes a broken / interrupted [previous] download, if any.
# 2. Renames the file to a proper name with including platform info.

P7h

sudo apt install screen htop ncdu multitail
conda install jupyterlab pyspark
conda install -c conda-forge jupyter_contrib_nbextensions altair vega_datasets vega3
pip install https://dist.apache.org/repos/dist/dev/incubator/toree/0.2.0/snapshots/dev1/toree-pip/toree-0.2.0.dev1.tar.gz
jupyter toree install --spark_home=~/spark-2.3.0 --user
jupyter toree install --interpreters=Scala,PySpark,SQL --user
jupyter kernelspec list

P7h

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### Shell script to download Oracle JDK / JRE / Java binaries from Oracle website using terminal / command / shell prompt using wget / curl.
### You can download all the binaries one-shot by just providing one BASE_URL.
### Script might be useful if you need Oracle JDK on Amazon EC2 env.
### Script is updated for every JDK release.

### Features:-
# 1. Resumes a broken / interrupted [previous] download, if any.
# 2. Renames the file to a proper name with including platform info.

P7h

# Create a shared folder "Share" in the Host OS through the GUI.
# Run the following in the Virtual Box Guest OS.
sudo usermod -aG vboxsf <<current_user>>
mkdir ~/share
sudo mount -t vboxsf -o uid=$UID,gid=$(id -g) Share ~/share

P7h

# Docker mounts the user's home directory. 
# We will download the course notebooks and data into a folder in the home directory and mount it with out Docker image.

mkdir ~/zepp; cd ~/zepp
mkdir -p notebooks logs data
wget -c https://codeload.github.com/adbreind/spark-zeppelin-17-1/zip/master -O spark-zeppelin-17-1-master.zip
unzip spark-zeppelin-17-1-master.zip
mv spark-zeppelin-17-1-master/data/* data/ 
mv spark-zeppelin-17-1-master/notebooks/* notebooks/
rm -rf spark-zeppelin-17-1-master.zip spark-zeppelin-17-1-master

P7h

import java.time.LocalDateTime

import scala.annotation.tailrec

object Stopwatch {

  def main(args: Array[String]): Unit = {
    val from = LocalDateTime.of(2001, 9, 11, 8, 46, 40, 250)
    val to = LocalDateTime.now()

P7h

-- FizzBuzz in Haskell

fizzbuzz :: Int -> String
fizzbuzz n = if fb /= ""
             then fb
             else show n
             where fb = fizz n ++ buzz n


fizz:: Int -> String

P7h

object FizzBuzz {
    def main(args: Array[String]) {
        (1 to 30) map fizzbuzz map println
    }
    case class MultipleOf(n: Int) {
        def unapply(x: Int): Option[Int] = {
            if(x % n == 0) {
                Some(x/n)
            } else {
                None

P7h

import datetime
year,week_num,day_of_the_week = datetime.datetime.now().isocalendar()
print year,week_num,day_of_the_week

P7h

sudo find / -type f -name "log4j.properties" -exec sed -i 's/TRACE/ERROR/g' {} +
sudo find / -type f -name "log4j.properties" -exec sed -i 's/DEBUG/ERROR/g' {} +
sudo find / -type f -name "log4j.properties" -exec sed -i 's/INFO/ERROR/g' {} +
sudo find / -type f -name "log4j.properties" -exec sed -i 's/WARN/ERROR/g' {} +