Starship: A minimal, fast, and customizable prompt for any shell

Personally, over time, I have stopped caring too much about prompt customization. I concluded that, no matter how carefully you curate your prompt, 90% of the information shown will be irrelevant 90% of the time*. After a while, your brain will start perceiving this as visual clutter and filter it out, to the point you may even forget the information is there, right in front of your eyes.

And for the things that matter, you probably need more details than any prompt can show you. E.g. are there changes in your git branch? Ok there are, good to know, but which files have changed? Just knowing that there are changes is not really actionable information. You need to run additional commands to get actionable details.

* the numbers are completely arbitrary, but you get the picture

I think these kinds of over-optimization rabbit holes are a good learning experience, but I compare it to woodworking. A woodworker just starting out will spend most of his/her time building or refining the tools they need, learning techniques, coming up with ideas/designs and testing them, etc. But eventually the point comes where you have to get Real Work done and the tools and jigs have to wait until the weekend.

Linux is still my favorite desktop OS, but these days I just run Debian and KDE because "free time" is not a thing I have anymore and I care more about getting things done than having the most optimal computing experience.

I only emit it if the prior command fails, too, so it doesn't clutter things the 90% of the time things are working.

  » true
  » false
  (last command returned 1.)
  » 

It's also useful the other way: when a program emits and error and exits with "success".

I've tried prompts in the past, and they mostly annoyed me, or never showed me useful information. I've been a happy starship user for several years now. I've got the config tweaked so that it only shows me things I specifically care about. It's lightning fast.

My shell customization is largely throwing Starship in (so it looks the same on all the machines I use -- Ubuntu servers at work, macOS at home, nixOS/Fedora/etc. servers for personal use.) and a starship.toml I wrote once and now leave alone.

For most of my career I used a very simple PS1:

    export PS1="\[\033[1;32m\][\t \u@\h \w]\\$\[\033[0m\] "

I've tried prompts in the past, and they mostly annoyed me, or never showed me useful information. I've been a happy starship user for several years now. I've got the config tweaked so that it only shows me things I specifically care about. It's lightning fast.

And now that you mention it, next year will be my 30th Unix-versary. Time flies... Still not a greybeard though.

For a while, I tried a couple of Christmas tree prompts which included all kinds of condensed Git status and other bells and whistles, but eventually tired of them and settled on:

- Exit status of the previous command, if nonzero.

- Current time, HH:MM, 24 hour format.

- user@host, red if euid 0, green otherwise.

- Current directory, shortened if the path has three or more elements, with home directory recognition.

- Current directory, full path, echoed as hardstatus and hence appearing in the terminal window title.

- The name of the current branch if within a Git repo.

- Prompt character, dollar/hash sign.

All those elements are meaningful to me, inasmuch as I can quickly orient myself using that information and explore further if I notice anything out of the ordinary.

I'm pretty sure that megaprompt programs like Starship could produce the above, but I like obtaining a familiar prompt with a minimum of external dependencies, and so have written it all in Bash, then ported to Zsh and various Korn shells, which was quite tricky. It probably wouldn't work on Xenix 286, but anything newer has a fighting chance.

For example the following prints the exit code in green if zero, in red otherwise:

  PS1='\[\e[$(($??31:32))m\]$? \[\e[39m\]'

That said my vimrc is 2 lines that i can configure manually, I don't touch bash config from Debian defaults and my fish config is vanilla save for a handful of functions because I'm a lazy. My ssh config is pretty heavily customized but mostly around what keys/usernames to default to for which hosts (see previous about lazy).

I played with Starship for an hour this morning - the joys of 50 person planning meetings - but ultimately uninstalled it. I did like some of its options like command timing and success/error, but all the tool versions ultimately just felt like noise. Not worth the effort to maintain a complex custom config to trim it down to what I'd want.

I agree there's a lot of noise that seems to be there by default.

That was my prompt when it was written in zsh. Sort of like TFA, I've since moved to Rust:

https://github.com/thanatos/dotfiles/blob/master/zsh-prompt-...

I think (if I am reading TFA's code right) unlike the article, I'm using zsh's module functionality, so the Rust here is a .so that is loaded directly into the shell's memory. (I.e., I do not have to fork/exec a separate Rust bin to compute the prompt, though I think zsh might fork-but-not-exec for computing the prompt itself.)

The latter is, of course, somewhat more complicated in some senses. (Esp. on macOS, which work forces me to use, where dlopen(2) is just utterly insane.)

A few years ago I progressed to having the current directory in there.

The thought of running a child process to create my prompt every time I hit enter doesn't feel right.

I should know what git branch I'm in, and if I don't it's a simple command away.

It also gives me the current branch in a directory that has git, just so I'm sure of what I'm working on-- but most of the time that's handled by whatever editor I'm using.