I am currently using android. Typically, if I want remote controlling the system, use ADB over usb or network. To transfer file, I can use mtp to transfer file. Are there similar interface on librem 5?
Librem 5 is a gnu/Linux system. So, the obvious answer is SSH and SFTP in OpenSSH. In a raspberry pi, the way to remote control is using the ethernet.
Ideally, Librem 5 could have a ssh over usb interface, or something similar to adb, then it would be more convenient. Otherwise, file transfer and remote control could only be possible within WiFi networks or required to use some adapter, which is less than ideal.