I have. There are a few simple rules that, once you learn them, eliminate those kinds of problems. The main one is always use double-quotes around variable der

I have. There are a few simple rules that, once you learn them, eliminate those kinds of problems. The main one is always use double-quotes around variable dereferences. The second is learning a few patterns, like find ... -print0 | xargs -0 ... But even after you've learned those simple rules, shellcheck is still useful. It will find fewer problems, but that's a good thing, that means you learned something :-).