I mainly use termux for the script API (which is incredible btw). I usually write the scripts in bash or ruby on my computer and scp them over, but I also have a small keyboard that I can plug in to type directly on the phone.

Even if you don't use the CLI part of Termux often, it's still an incredibly neat piece of hackery goodness. I once needed to text about 50 people and have it be from my real phone number. Rather than hack around with Twilio or AWS, I spent 5 minutes writing a ruby script to send the texts from Termux. If you aren't familiar yet with the API, it will take a little longer than 5 mins the first time. Once I had that script, I kept finding neat usecases for it. I sometimes still just text from the CLI because it's easier than using the built-in messages app depending on what I'm doing.

You can definitely get an amazing experience on Android without Termux, but Termux is like if Android were a really nice bicycle, Termux is a small powered motor you can bolt on somewhere to automate parts of your life.

Aside: I find Termux easier to use than Tasker. I'm a CLI native old man though, so don't take this as a knock against Tasker.

You really don't need a keyboard, I use it just fine with onscreen and even wrote some simple scripts in vim with it. Tab completion in the shell helps a lot too and termux's keyboard has a button for it right there.

But if you _do_ need a keyboard... it's android and it perfectly supports USB or Bluetooth input devices including mice, keyboards, etc. If you have a Samsung or some other devices you can even get a nice HDMI output to a monitor and desktop experience out of the box. It's really like a little laptop in your pocket at all times.

And if you need a GUI Termux runs X11, vnc, etc and GUI apps just fine. Just download a X11 server or vnc app from the play store (there are tons) and you're good to go.

You do not! You can use volume down as a Ctrl key, and volume up also unlocks other keys (volume up + wasd for example gives you arrows.) It also gives you an extra row above the touch keyboard with escape, tab, and some other keys, and a text input for pasting/IME/swiping/etc.

And even if that sounds uncomfortable there's still plenty of useful things you can do with minimal typing! For example... You could run Tailscale as a normal Android app, then use SSH forwarding in Termux to get a local port that goes to a web server on another computer in your tailnet, and browse to that locally on the phone using Fennec F-Droid (Firefox). All of that works just fine. If I leave one of my computers on and I'm in bed or away from home I can ssh in and run systemctl suspend. Wayland/X server locked up? You can use your magic sysrq keys of course, OR you can ssh in with termux and kill it, which doesn't depend on magic sysrq being enabled (or remembering how to get it on your keyboard.) You could also run yt-dlp to download some video or audio content from the internet; everyone hates the Reddit video player, so why not just get the MP4 out of it? Admittedly, there's a better solution here: you can get an app called Seal on F-Droid which is a pretty good yt-dlp frontend. But, the fact that you can easily do it in Termux using their package manager is testament to just how useful Termux is.

I honestly only want one thing; an SSH Agent implementation built into the app, so I can import SSH keys and not have to enter the passphrase constantly. Not a huge deal really, but having a built-in agent would be super convenient.

Termux allows the same kind of scripting ability you would expect from a desktop. Termux-api almost rivals tasker in what you can automate with it. I use the "share with termux" function and git pull/push shortcuts more than anything else, and they are both effectively 1 touch functions. The share with termux function allows you to script how termux will respond to shared urls, I have it set up to auto-start yt-dlp and fill in certain formats and details and starts downloading. It was a little bit inconvenient to set up, but I managed without a fullsized keyboard. There's an app called hacker keyboard that makes it easy.

The original script I wrote was initially set up with youtube-dl, the most recent change was to yt-dlp. For a lot of little things, like to SSH/reboot my rpi, wget a link I want to archive/send, small python programs (and yt-dlp), the keyboard is perfectly adequate. I've even converted a couple of audio files to send to a friend on iOS, from opus to mp3 on the phone. Bash alias are really useful, and because the phone isn't also general use, they can be very specific.

Termux also makes the phone into a very powerful network diagnostics and pen testing tool. But even something as basic as ifconfig makes my phone feel as powerful as a computer. https://github.com/may215/awesome-termux-hacking

Chromebooks have the ability to install and run android apps. The lightweight environment afforded by Termux is perfect for them. I do use VIM with my chromebook. I know I can use crostini, and in the past I was running crouton, but I realized I can handle 99% of those things in termux, and I can use VSCODE dev for the remaining 1%. I appreciate how much more flexibility termux gives me.

https://wiki.termux.com/wiki/Termux:API

https://github.com/klausw/hackerskeyboard

You don't. I almost always use termux with virtual keyboard and it feels fine for doing something quick and on the go. Modal UIs (like vim) work better than modifier- and functional keys-heavy though.

There is quite a difference in size there! Find me a 7 inch laptop with phone battery life and pocket availabilty.

In a pinch I've used it to ssh onto a box to fix something. I also have a script that backs up a few folders from the phone to a NAS using rsync.

You can SSH to your phone and rnu tmux and ffmpeg on it, which is more powerful than my netbook.

It has additional keys above the standard keyboard for tabs, Ctrl, arrow keys etc. It also has good scroll support, even in vim. Definitely fine for quick jobs.

Because I don't want or can't use my shitty corporate issued laptop to access my personal projects from work.

Some phone models supports docking. So you can attach screen, keyboard, etc

Install Hacker's Keyboard from Google Play or F-Droid.