Android WebDAV Bi-directional sync with Termux and Rclone

The purpose of this fantastic documentation is to explain how to setup a very lightweight on-demand manual bi-directional sync between your Android device and a WebDAV share hosted somewhere. It's fast, and you trade appsolutionism for a cool shell script that you can execute from the comfort of your very own home launcher. This is all possible because of Termux, a terminal emulator application for Android that comes with its apt based package manager, and Rclone, a command-line program to manage files on way too many different cloud storage systems. Seriously it's ridiculous.

Warnings

• This documentation makes some assumptions regarding WebDAV and its configuration that are described there.
• Bi-Directional sync in Rclone is considered experimental at time of writing. See https://rclone.org/bisync/ for more info.
• This is not a Termux or Rclone tutorial, RTFM or GTFO :)

The Setup

Prerequisites

• Install Termux with F-Droid
• Make your life easier and access Termux via ssh, read this https://wiki.termux.com/wiki/Remote_Access#Using_the_SSH_server
• From Termux

pkg upgrade
pkg install rclone

• feel free to also install quality of life extras like tmux, neovim, etc
• configure rclone to work with your WebDAV share,