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****************************************************************************
**** FaunaDB Relations: GraphQL schemas, mutations and resulting documents *
****************************************************************************
**** One to One Relation ***************************************************
SCHEMA:
type User { name: String!  car: Car }
type Car  { plate: String! owner: User }
MUTATION:
mutation Create {
  createUser(data: {

tovbinm

1. Open terminal inside your virtual machine and run:  
   sudo dd if=/dev/zero of=EMPTY bs=1M
   sudo rm ./EMPTY

  This will zeroify all the empty blocks on your disk.

2. Shutdown you virtual box.

3. Check what type of virtual drive do you have: VMDK or VDI. VirtualBox shrinking works only with VDI files. 
   If you have a VDI file, proceed to the last step, otherwise you'll need to perform  an additional step of converting your VMDK file 

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import java.io.IOException
import java.nio.ByteBuffer
import java.nio.channels.{AsynchronousFileChannel, CompletionHandler}
import java.nio.file.Paths
import java.nio.file.StandardOpenOption._

import scala.concurrent.{ExecutionContext, Future, Promise}
import scala.util.Try

/**

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Remove:
touch .hushlogin

Get it back:
rm .hushlogin

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import java.net.{ InetSocketAddress, Socket }
import java.time.Duration
import java.time.temporal.ChronoUnit.SECONDS
import java.util.concurrent.{ TimeUnit, TimeoutException }
import java.util.function.{ Consumer, Predicate }

import com.dimafeng.testcontainers.{ Container, GenericContainer }
import com.faunadb.client.FaunaClient
import org.junit.runner.Description

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1.
Paste it to the bash:
git config --global alias.lg "log --graph --pretty=format:'%C(auto)%h -%d %s %Cgreen(%cr) %C(bold blue)%an <%ae>%Creset' --abbrev-commit"

2.
Then in any git repo type: git lg

3.
Enjoy

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1.
# vim /etc/sysctl.conf
fs.file-max = 999999
net.ipv4.tcp_rmem = 4096 4096 16777216
net.ipv4.tcp_wmem = 4096 4096 16777216
net.ipv4.ip_local_port_range = 1024 65535

2.
# vim /etc/security/limits.conf
root	- nofile 999999

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cd /proc/<pid> && echo -n "Max open files=65535:65535" > limits

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require 'rubygems'
require 'aws-sdk'

puts "\nLoading instances..."
if File.exist?('instances.yaml')
  instances_by_id = YAML.load_file('instances.yaml')
  puts "Loaded %d instances from instances.yaml" % [instances_by_id.count]
else
  instances_by_id = Hash.new
  ec2 = AWS::EC2.new

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# Nginx - logrotate & upload to S3
0 0 * * * /usr/sbin/logrotate /etc/logrotate.d/nginx 
15 0 * * * s3cmd put /var/log/nginx/access.log-`date +"\%Y\%m\%d"`.gz s3://$LOGS_BUCKET_NAME/nginx-access/`date +"dt=\%Y\%m\%d"`/`hostname -s`.access.log-`date +"\%Y\%m\%d"`.gz