Rahul Kumar rahulkumar-aws

Set JAVA_HOME

$ vim .bash_profile 
export JAVA_HOME=$(/usr/libexec/java_home)
$ source .bash_profile
$ echo $JAVA_HOME
/Library/Java/JavaVirtualMachines/1.7.0.jdk/Contents/Home

Setup Password less ssh

docker pull mongo mkdir ~/data sudo docker run -d -p 27017:27017 -v ~/data:/data/db mongo docker exec -it some-mongo bash docker logs some-mongo

docker pull mysql

docker run \

Studying for a Tech Interview Sucks, so Here's a Cheat Sheet to Help

This list is meant to be a both a quick guide and reference for further research into these topics. It's basically a summary of that comp sci course you never took or forgot about, so there's no way it can cover everything in depth. It also will be available as a gist on Github for everyone to edit and add to.

Data Structure Basics

###Array ####Definition:

Stores data elements based on an sequential, most commonly 0 based, index.
Based on tuples from set theory.

apache log

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minikube stop; minikube delete
docker stop $(docker ps -aq)
rm -r ~/.kube ~/.minikube
sudo rm /usr/local/bin/localkube /usr/local/bin/minikube
systemctl stop '*kubelet*.mount'
sudo rm -rf /etc/kubernetes/
docker system prune -af --volumes

-- pickups by geography
CREATE TABLE daily_pickups_taxi AS
SELECT
 cab_type_id,
 date(pickup_datetime) AS date,
 pickup_location_id,
 COUNT(*) AS trips
FROM trips
GROUP BY cab_type_id, date(pickup_datetime), pickup_location_id

object Functions extends App {

  //
  // Function Calls
  //

  // basic function call with a single param
  println("foo")

	In your Play application, you can use ReactiveMongo with multiple connection pools (possibly with different replica sets and/or different options), using the @NamedDatabase annotation.

	Consider the following configuration, with several connection URIs.

	# The default URI
	mongodb.uri = "mongodb://someuser:somepasswd@localhost:27017/foo"

	# Another one, named with 'bar'
	mongodb.bar.uri = "mongodb://someuser:somepasswd@localhost:27017/lorem"
	Then the dependency injection can select the API instances using the names.

	sudo add-apt-repository ppa:webupd8team/java
	sudo apt-get update
	## Java8
	sudo apt-get install oracle-java8-installer

	## Managing Java
	sudo update-alternatives --config java

	## Setting the JAVA_HOME Environment Variable
	sudo nano /etc/environment