I'd guess not, at least without root, as Texmux is still an app and Android won't allow apps that much control over the phone.

Termux API from FDroid?

You can control volume using termux with termux-volume command nand wifi with termux-wifi* commands. Not sure about airplane mode but reboot is possible with adb only

Pretty easily if you go a different route.

• Download something like the Terminal Emulator app. This gives you access to the CLI on any Android phone. Now you can already control some things over CLI, basically anything you can control without root.
• If you want more, root your phone. Now you can controll all of the things you mentioned from CLI
• Install a full Linux in a chroot (you can use LinuxDeploy for that, which is outdated, but that only means you need to update the Linux environment like a regular Linux). Inside of that, you can mount your Android system. Now you have a full Linux that can do all usual Linux things, and also control your phone. This Linux can be either accessed via shell (through Terminal Emulator app) or via VNC to view it's GUI.

Now you have a full Linux inside Android that you can use as a full Linux, and that can control your phone from CLI.

If you are crazy enough, you might even get stuff like calling to work from inside Linux, but what's the point? You still got a full Android to do Android things with it.

Linux in a chroot is so much real Linux, that I managed to get FEX (x86/x64 emulator) to work inside it, and Wine on top of FEX, so now I can even run Windows x86/x64 programs on my phone.

You can also install Debian through Termux if you want Ivon Blog

Note: i recommend nano over vim in the tutorial, easier to use haha

You need to use root or pass through some other access control mechanism to control network interfaces or audio devices on Linux too, Android's access control mechanism for those things just isn't built with shell scripting in mind because using a terminal on a phone is a pain...