That still relies on the second `curl` fetching the same instructions as the first (an invariant that a really nasty web server wouldn't have to obey). Wouldn't it be better to use a `tee` to make sure that what you read with `less` is exactly what's executed?

(For what it's worth, it turns out that this sort of nefarious invariant disrespect was discussed at https://news.ycombinator.com/item?id=11532599 .)