see also: iSH for iOS (https://ish.app/)
I find it usable as a text editor, git client and ssh client, which is great really. Any lightweight CLI usage should feel great.
I was hoping to run go and python code locally, but even installing deps, not to mention running tests is unreliably slow.
Maybe it's better on the most recent Apple SoCs, but on my iPad mini just opening a small text file in vim takes a second or two (instant on Termux/any other CLI I've used in the last decade.
Rsync is so slow as to be useless - I think because it takes forever to calculate the diff.