https://rclone.org/docs/

Follow the directives to finish Google Drive config: https://rclone.org/drive/#making-your-own-client-id

Config OneDrive Organization

Simply use webdav with sharepoint: https://rclone.org/webdav, note that the password need to be encrypted.

Usage

Having used Mount, Sync, Copy, and BiSync modes, I finally choose to use BiSync at most chances. Because the Mount is based on FUSE, which is erased every time the front or daemon was killed, which is not what I want. Copy cannot delete files. Sync is a one-way operation. So I choose the two-way operation BiSync.