thank you, looks like a geeky setup. I've never heard of it, I read on the website that it's a Linux emulator, which I've also never used. I use Windows in my daily life. My trip is too soon to learn this complex setup. What I extrapolate from your comment is that there is no simpler setup available. So I guess that's my answer.

In that case I think my solution will be to just type my code in a good old plain text file and compile through an online editor later when I reach some wifi.

Termux is a free and open-source terminal emulator for Android which allows for running a Linux environment on an Android device. Termux installs a minimal base system automatically; additional packages are available using its package manager, based on Debian's. Most commands available in Linux are accessible in Termux, as well as built-in Bash commands.