You should probably check out Guile.
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posix sh + awk for manipulating data?
Perl would be my candidate for more advanced text handling than what sh can do.
Never used Lua but I think it's fun.
If nothing else works, just learn C/Rust. There's plenty of that on Linux systems, I think you'll be able to manage. Yes, it doesn't meet a lot of your requirements.
@gomp I like TypeScript.
I used Python for 15 years or so until they changed from v2 to v3. At that point I realised I couldn't understand my old code because it lacked types, so I got discouraged with that. So rather than learn v3 I stopped using it.
Perl is a disaster. sh is good for shell scripts but let's not stretch it.
TypeScript can use all the JS libraries and runs on node which is supported by all sorts of platforms. Yes there are a few holes in the type safety, so don't do that.
The internet is full of "how to do X in JS". You can read them and add the types you need.
nim is great, but it is >200mb (plus AFAIK it is compiled... does it also have an interpreter?)
The part where it's compiled is what makes it have no dependencies to actually execute
Why not give (Common)LISP a try?
Why does it need to be a scripting (by this I assume interpreted) language? For your requirements - particularly lightweight distribution - a precompiled binary seems more appropriate. Maybe look into Go, which is a pretty simple language that can be easily compiled to native binaries.
Bro seriously just slap pyenv + pyenv-virtualenv on your systems and you’re good to go. They’re absolutely trivial to install. Iirc the latter is not a thing in windows, but if you’re stuck on windows for some reason and doing any serious scripting, you should be using WSL anyways.
It is possible to wrap something like python into a single file, which is extracted (using standard shell tools) into a tmpdir at runtime.
You might also consider languages that can compile to static binaries - something like nim (python like syntax), although you could also make use of nimscript. Imagine nimscript as your own extensible interpreter.
Similarly, golang has some extensible scripting languages like https://github.com/traefik/yaegi - go has the advantage of easy cross compiling if you need to support different machine architectures.
Could use a hipster shell like fish, nushell or elvish. I know the latter two have the functional support you're looking for.
You could use Ansible for automation just keep in mind it needs python.
@gomp Small footprint? Why not try forth. https://forth-standard.org/
perl might be on all your systems. It’s kind-of a legacy, but still actively developed. It’s not a great language: it looks like bash scripting on steroids. But if you just need to write some small scripts with a language more powerful than awk or bash, it does the job. If perl isn’t on all of your systems already, then I would choose a better scripting language.
TBH I don't even use awk that much, even that is plenty powerful for my needs. Perl absolutely blows my mind with how needlessly complex I can make stuff with it
Everyone always dunkin' on Perl, but I can't even tell you how often it's been the best tool for the job. Like, at least 3