There used to be a very good terminal environment app on Linux, far better than termux. It was called Terminal IDE, and it was basically a full Debian bootstrap

There used to be a very good terminal environment app on Linux, far better than termux. It was called Terminal IDE, and it was basically a full Debian bootstrap. Unfortunately, it was never updated for lollipop or later, possibly because of pie/technical reasons. Personally, I've given up on using Linux from Android. I'd love to, but it's next to impossible, you'll run into other issues you haven't even seen yet; for example, my phone doesn't even have ext support for the sdcard; I'm stuck using fat32 for a 32gb partition. You also can't mount a network drive with fuse and expect to access it from another app. If you want a software keyboard, use hacker's keyboard--it does a full keyboard layout with alt/Ctrl/other keyboard keys. If you want a physical keyboard, you shouldn't use a keyboard case anyways, a full size keyboard is far easier to use. You can get a microusb numpad-less keyboard for around $10-15 online. Alternatively, just get a full 100+-key Bluetooth keyboard If you want updates, buy Google and/or deal with unofficial community updates if you can get them, because only Google updates their devices. I'm stuck on lollipop because Verizon has decided not to release Marshmallow in the US (VZW Moto E2 has MM in EU only) The adb backup/restore commands may also be of some limited help to you. (They use archives that aren't openable, but they do work)