For Debian and Ubuntu based distributions the easiest way to get started is to download and install the latest , either through the graphical installer or via the command-line with the following command.
sudo apt install ./ExpanDrive_7.5.0_amd64.deb
Installing the .deb will also automatically install the apt repository and code signing key to enable easy updates using the system package manager.
You can install the repository and key manually with the following commands:
During an update of ExpanDrive, if you receive an error stating that The following signatures were invalid: EXPKEYSIG, this indicates that the version of the key you have is expired.
To resolve this, the following commands will update the public key stored on your system: