[jaytaylor]

One big turnoff with GNU parallel is that the first time it is run on a machine, you must interactively accept a EULA. There are ways around it, but as a rule of thumb I avoid command-line tools that do this, because this inconsistent runtime behavior is annoying at best and can easily break and complicate automation.

And no, I don't want to set an environment variable on a fleet of machines to suppress behavior which shouldn't be enabled by default to begin with! <cough> .NET telemetry </cough>

A real shame, because it is an otherwise useful tool IMHO.

[telotortium]

What it actually does is to beg you to cite parallel if you use it in academic work. There's two ways to silence it:

• Run `touch ~/.parallel/will-cite`.

• Pass the flag `--will-cite`.

Still annoying, although it's easy enough to disable.

[_delirium]

Fwiw the Debian & Ubuntu packages have disabled this behavior.