[RubberSoul]

There are great videos for understanding how it works [0]. I watched a couple of those and after that was able to do exactly what I needed.

For me the trickiest thing is remembering how to deal with redirection. I find the --dry-run option to be super useful when setting up a command.

[0]: https://www.youtube.com/playlist?list=PL284C9FF2488BC6D1

[mechanical_jane]

Yeah, quoting redirection is a bitch, but as long as you know GNU Parallel is just a program and not part of the shell, you can usually deduct which parts will be interpreted by the shell before GNU Parallel gets it.

I often create bash functions to avoid that shit, and then call the bash functions from GNU Parallel instead.