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How to Set up a Raspberry Pi with LED Power Button and RTC

After a lot of trial and error, I've figured out how to set up a Raspberry Pi (in my case, I tested with a 2B and 3B+, this may not work on a Pi 4B). This involves using the i2c0 bus (which normally isn't recommended), but this is what I was able to get working as re-mapping would communicate with the RTC via i2c, but the overlay for the RTC wouldn't adjust its configuration when told to use i2c3 or higher.

Required hardware

1. Power button (this should be a momentary switch type)
2. Power LED (for me, this was actually built into the power button)
3. 330K Ohm resistor (this is connected between the LED and the 3.3v header
4. A Real Time Clock (RTC) Module (preferably, one with built-in pull up resistors)
5. Jumper wires

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Rsync Commands for use with TrueNAS

Due to the way TrueNAS is built-duplicating files using Rsync requires some special flags to allow it to work

The below example command has been used and verified as working with TrueNAS Scale

rsync -avrh -A --no-perms <SOURCE> <DESTINATION>

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How to Migrate a Unifi Controller from Cloudkey Gen 1 to Docker Container

Background: In an effort to streamline my local network and reduce the number of dedicated devices, I began an effort to move off of my Unifi Cloudkey Gen 1 to a Docker Container. While the migration should be straight forward-it is definitely not!

Before we begin, ensure that your existing Cloudkey is still connected to the network and operational. This is crucial to migrate the existing settings and to leverage the Unifi migration tooling for a site to save on having to wipe your configuration and rebuild everything from scratch.

1. Launch your container (it is up to you to follow the documentation for the specific maintainer's flavour to ensure you avoid data loss!) Once you can access the set up screen (on TCP:8443) for the containerized controller, you can proceed to Step 2
2. On your existing controller, Navigate to Settings -> Backup and download a settings only backup. This is CRITICAL because trying to import

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Badblocks on TrueNAS Scale

1. Connect your USB drive to the machine
2. Navigate to the TrueNAS Scale shell by opening the menu, going to System Settings and then clicking on Shell
3. Locate the drive's device ID using the lsblk command
4. Check the recommended block size using the command blockdev --getbsz /dev/<YOUR BLOCK DEVICE ID>
5. Note the block size you got from the last command
6. STOP! Have you ensured that the USB device does NOT have any important data on it? If it does, stop now, unplug it from the TrueNAS Scale machine and back it up elsewhere! Running the specific badblocks command we'll use will destroy data on the drive!
7. Okay, you've confirmed there is no data on the drive you need? Good!
8. Fire up a new tmux session tmux new -s badblocks_

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Resize an Ubuntu VM Disk on TrueNAS Scale

1. Shutdown the target VM
2. Locate the zvol where the storage is allocated in the Storage blade in the TrueNAS Scale Web UI
3. Resize the zvol by editing it-this can ONLY be increased, not shrunk!
4. Save your changes
5. Start your target VM up again
6. Log in to the VM
7. Execute the growpart command, ie. sudo growpart /dev/vda 2
8. Execute the resize2fs command, ie. sudo resize2fs /dev/vda2

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#!/usr/bin/env bash
# Download the binary
sudo curl -SL https://github.com/docker/compose/releases/download/v2.2.3/docker-compose-linux-aarch64 \
-o /usr/local/lib/docker/cli-plugins/

# Set the binary to be executable
chmod +x /usr/local/lib/docker/cli-plugins/docker-compose

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#!/usr/bin/env bash

# Install Dependencies
sudo apt-get update && sudo apt-get install software-properties-common wget -y

# Add the gpg key
wget -O- https://apt.releases.hashicorp.com/gpg | gpg --dearmor | sudo tee /usr/share/keyrings/hashicorp-archive-keyring.gpg

# Add the repository and set where the key is to validate the packages
echo 'deb [arch=arm64 signed-by=/usr/share/keyrings/hashicorp-archive-keyring.gpg] https://apt.releases.hashicorp.com $(lsb_release -cs) main' | sudo tee /etc/apt/sources.list.d/hashicorp.list

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Getting Your Python (Development) On!

Python for Windows is really easy to install-but what if you had started in the world of MacOS/*nix OSes and miss that single command to call Python or Pip? What if you don't have access to modify your environment PATH?

Windows PowerShell has a feature called "Profiles" which allows you to configure your PowerShell in a similar fashion as you could with Bash, Zsh, etc.

Pretty cool huh?

Create a Profile

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Fixed command to close connections to RabbitMQ

rabbitmqctl list_connections pid port state user vhost recv_cnt send_cnt send_pend name| grep -vP 'Listing|pid' | awk '{print "rabbitmqctl close_connection \"" $1 "\" \"manually closing idle connection\"" | "sh" }'

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#!/bin/bash
# Bash script to check if rbenv is installed along with a few necessities and if they don't exist
# to install them

TEST_RUBY_VERSION="2.6.3"

install_rbenv() {
  echo "--- :construction: Installing Rbenv"
  # Clone rbenv from Github
  git clone https://github.com/rbenv/rbenv.git "$HOME/.rbenv" > /dev/null 2>&1