shellcheck won't force you to prefer one of the two variants, hence the difference is relatively subtle to a degree that even documentation is not superhelpful

shellcheck won't force you to prefer one of the two variants, hence the difference is relatively subtle to a degree that even documentation is not superhelpful either: https://www.oilshell.org/blog/2016/10/12.html https://www.oilshell.org/blog/2016/10/12.html shellcheck will show you many more mistakes that are much more painful your example and also very common. Deno is definitively an interesting language, but Shell scripting is the gateway to bootstrap so many of your beloved programming languages. If your environment allows it always prefer a proper programming language over shell scripting. Shell scripts are meant for Unix operating system operations, setting few variables, combining certain data-sources, doing filesystem operations, ...