[afwe]

The website could detect whether you are using a regular browser or curl itself to download the .sh file and return something different. So inspecting the .sh using your browser before you run that line would not protect you.

[ComputerGuru]

Inspect it by piping to less or vim instead?

[reificator]

Still distinguishable: https://news.ycombinator.com/item?id=24731271