IDE Installation Ubuntu

https://www.arduino.cc/en/software
Zip version:
Unzip file.
Trying to run

./arduino-ide

gives error

You need to make sure thatapplications/arduino-ide_2.3.4_Linux_64bit/chrome-sandbox is owned by root and has mode 4755

Solution:

sudo chown root:root chrome-sandbox
sudo chmod 4755 chrome-sandbox

https://askubuntu.com/questions/1461941/how-to-install-arduino-ide-2-2-from-the-zip-version-on-ubuntu-23-without-insta

Port permissions

https://docs.arduino.cc/software/ide-v1/tutorials/Linux/

ESP32 Support

Select Board and Port
Choosing ESP32 Dev Board
Large download starts, messages from Arduino IDE:

Downloading packages arduino:dfu-util@0.11.0-arduino5 esp32:esp-rv32@2405 esp32:esp-x32@2405 esp32:3.1.1: esp32:esp32-arduino-libs@idf-release_v5.3-cfea4f7c-v1 esp32:esptool-py@4.9.dev3 etc.

Where are these packages stored?
~/.arduino15/staging/packages For model "Aokin ESP32 ESP-WROOM-32 Development Board 2.4 GHz WiFi and Bluetooth Dual Cores Microcontroller ESP-WROOM-32 Chip for Arduino NodeMCU"
https://www.amazon.com/dp/B08NW6YZ8W
ESP32WROOM