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A little suggestion for the authors, they mentioned xargs, I think [GNU parallel](https://www.gnu.org/software/parallel/ https://www.gnu.org/software/parallel/)
A little suggestion for the authors, they mentioned xargs, I think [GNU parallel](https://www.gnu.org/software/parallel/ https://www.gnu.org/software/parallel/) might work a mention too, since it is a kind of modern successor that can use many computers to run tasks.
This you have to install, xargs is everywhere. Also with the -P flag you can parallelize the most common cases.
I agree on the install part, but xargs -P still run on the same host and I was addressing the multiple hosts feature of parallel.
Personally I like parallel better because of the `--bar` option and `{}`, `{.}`, `{/}` and `{/.}`. And I usually just use it with `-P 1` anyway.
Given the article is about text processing and nothing like "big data", I don't think using multiple computers is really an important feature.