# Bitcoin node running, questions about learning Linux and system engineering thru Umbrel

**URL:** <https://community.umbrel.com/t/bitcoin-node-running-questions-about-learning-linux-and-system-engineering-thru-umbrel/11576>\
**Category:** Support and Troubleshooting\
**Created:** [February 22, 2023, 9:21am UTC](https://community.umbrel.com/t/bitcoin-node-running-questions-about-learning-linux-and-system-engineering-thru-umbrel/11576 "2023-02-22T09:21:36Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![chr1stophe](https://avatars.discourse-cdn.com/v4/letter/c/f05b48/32.png) [@chr1stophe](https://community.umbrel.com/u/chr1stophe)\
**Post date:** [February 22, 2023, 9:21am UTC](https://community.umbrel.com/t/bitcoin-node-running-questions-about-learning-linux-and-system-engineering-thru-umbrel/11576/1 "2023-02-22T09:21:36Z")

</div>

Bitcoiner here, but also system engineering n00b. I want to learn more about Linux and coding and I plan to use the Raspberry Pi as a playground (it only runs Bitcoin node, without connection to any wallets or lightning nodes just to be safe)

Please halp:

I have a hard time grokking the difference between Raspberry Pi OS and Umbrel. Most tutorials assume Raspberry OS is installed and as a systems virgin I’m not sure how to translate that.

Some more concrete questions:

1. How do I get command line access to the device? Are there SSH client apps I am missing or do I need to SSH into the device via Terminal on Mac?
2. I did find a terminal in the VS code app. Is this another Linux distribution or how does it relate to the Raspberry Pi itself? I tried the ifconfig command but just got the “command not found” response…
3. I am trying to deploy a very simple Python app on my Raspberry Pi (a boy’s name battler game as a surprise for my pregnant girlfriend).

To do that, I installed virtualenv in VS Code and then installed Flask in the virtual environment (I called it env). Finally I wrote a simple python program to test if it works:

from flask import Flask  
app = Flask( **name** )  
@app.route(‘/’)  
def index():  
return ‘hello world’  
if **name** == “ **main** ”:  
app.run(host=‘0.0.0.0’, port=5000, debug=True)

In the terminal, I ran the following command: flask run and it returns:

- Running on [http://127.0.0.1:5000](http://127.0.0.1:5000)

I then ran following command in the terminal:  
FLASK\_APP=app.py flask run --host=0.0.0.0 --port=5000

And it now tells me:

- Running on all addresses (0.0.0.0)
- Running on [http://127.0.0.1:5000](http://127.0.0.1:5000)
- Running on [http://10.21.0.5:5000](http://10.21.0.5:5000)

When I try to access the app via [http://10.21.0.5:5000](http://10.21.0.5:5000) nothing happens…

 ![Schermafbeelding 2023-02-22 om 10.19.32](https://canada1.discourse-cdn.com/flex030/uploads/getumbrel/original/2X/a/a3f98b02dafc6d7f813059d00fbface6717ac1a1.jpeg)

All help appreciated (be it answers to my generic or specific questions, or links to learning resources)