Added Linux post install script

[StarDev-it]

Added a simple Linux post install script.
This script is useful to set the right UDEV rules in order to deploy/upload the code to Arduino Nano ESP32 from a standard Linux user

[CLAassistant]

All committers have signed the CLA.

[tormodvolden]

The suggested udev rules are not recommended. Do not use MODE=:"0666" since it is a security liability. Use TAG+="uaccess" to give access to the desktop user.

[tormodvolden]

This is a particularly weird mixture of echo and "here" documents. Simply use one "here" document.

[tormodvolden]

Missing EOL on last line. Using a proper text editor avoids this. Unix text files should have a line terminator on every line, including the last line.

[h-b]

I have successfully implemented the suggested changes (uaccess, EOL, single here doc) and confirmed the script's functionality. As this is my first Arduino project, troubleshooting this issue was particularly challenging due to the increased complexity for beginners. I believe integrating the script would significantly enhance the Arduino setup experience and improve usability for all users.

#!/usr/bin/env bash

# This script creates a udev rule for the Arduino ESP32 bootloader mode
# allowing access without root privileges.

arduino_esp32_rules() {
  echo "# Arduino ESP32 bootloader mode udev rules"
  cat <<EOF  # Use a here document for clean formatting
SUBSYSTEMS=="usb", ATTRS{idVendor}=="2341", ATTRS{idProduct}=="0070", TAG+="uaccess"
EOF
}

if [ "$EUID" -ne 0 ]; then
  echo "Please run as root"
  exit
fi

arduino_esp32_rules > /etc/udev/rules.d/60-arduino-esp32.rules

# Reload udev rules
echo "Reload rules..."
udevadm trigger
udevadm control --reload-rules

[tormodvolden]

There is so much cargo-cult in these scripts, and I don't know where it is started (arduino mbed?).

This is simpler and better IMNSHO:

#!/bin/sh

# This script creates a udev rule for the Arduino ESP32 bootloader mode
# allowing access without root privileges.

if [ ! -w /etc/udev/rules.d ]; then
  echo "Please run as root"
  exit 1
fi

cat << EORULES > /etc/udev/rules.d/60-arduino-esp32.rules
# Arduino ESP32 bootloader mode udev rules
SUBSYSTEMS=="usb", ATTRS{idVendor}=="2341", ATTRS{idProduct}=="0070", TAG+="uaccess"
EORULES

echo "Reloading rules..."
udevadm control --reload-rules

[h-b]

There is so much cargo-cult in these scripts, and I don't know where it is started (arduino mbed?).

This is simpler and better IMNSHO:

#!/bin/sh

# This script creates a udev rule for the Arduino ESP32 bootloader mode
# allowing access without root privileges.

if [ ! -w /etc/udev/rules.d ]; then
  echo "Please run as root"
  exit 1
fi

cat << EORULES > /etc/udev/rules.d/60-arduino-esp32.rules
# Arduino ESP32 bootloader mode udev rules
SUBSYSTEMS=="usb", ATTRS{idVendor}=="2341", ATTRS{idProduct}=="0070", TAG+="uaccess"
EORULES

echo "Reloading rules..."
udevadm control --reload-rules

Well, I just modified the original script to reflect the comments.

[csarnataro]

Hi, thanks to this script I was able to successfully configure my Nano ESP32 on Linux.

Unfortunately I'm not an expert in udev rules so I can't comment anything about all the suggestions provided by other reviewers, I can just confirm it's working on my Debian machine.

I think it would be beneficial for other users if this PR got merged.