Bash is the wrong choice for truly complex software but I still find it really hard to pick anything else for the sort of tasks where I'm mostly manipulating text files and shelling out to other tools. My general instinct for when its time to reimplement a script in Python or similar is when I've got a ton of conditionals or function calls, at that point its also time to start writing unit tests.

shellcheck is a huge help in the middle sized shell script space and will regularly shout at me about missing all the random gotchas like not quoting file paths.

> Nice idea but I don't understand why people write bash scripts more than a few lines long.

From a pragmatic perspective I agree. But I think you’re missing the point here. A lot of the most entertaining, and dare I say inspiring content, found on Hacker News is about exactly things like this. Things that seem silly, but are also very intentionally pushing the boundaries to the extreme/absurd.