[obi1kenobi]

The shell script starts with the following comment:

    # All the code is wrapped in a main function that gets called at the
    # bottom of the file, so that a truncated partial download doesn't end
    # up executing half a script.

[arp242]

Most of these scripts have been doing that for years.

[obi1kenobi]

I'm sure of it. And yet based on this rapidly getting to the front page, it seems like many of us are part of today's lucky ten thousand: https://xkcd.com/1053/

Might be more than ten thousand, even, based on the reactions :)

[fuzzfactor]

I had to do stuff like this over com ports using systems made before PC's.