Setup Exercise

Download and install the Public Signing Key, not required as we have added it previously:
```
wget -qO - https://artifacts.elastic.co/GPG-KEY-elasticsearch | sudo apt-key add -
```

Add repository definition, not required as we have added it previously:

echo "deb https://artifacts.elastic.co/packages/7.x/apt stable main" | \
    sudo tee -a /etc/apt/sources.list.d/elastic-7.x.list &&
sudo apt-get update

Install logstash from the repository:
```
sudo apt-get install logstash
```

Create a manual pipeline for Logstash

 cd /usr/share/logstash
 sudo bin/logstash -e 'input { stdin { } } output { stdout {} }'

-e enables specifying configuration directly from the command line
stdin: filehandle that process reads to get information from you, human
stdout: process writes log information to this filehandle
After the pipeline has started
```
...Pipelines running...
```
type in the terminal:
```
Hello World!
```
And press enter

Expected response:

{
  "host" => "ip-172-31-19-36",
  "message" => "Hello World!",
  "@timestamp" => 2020-03-25T23:00:16.476Z,
  "@version" => "1"
}

Logstash adds a timestamp, version and the hostname to the message we sent
To exit use keyboard combination Ctrl-D or Ctrl-C to shut down the logstash process