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Wait till you learn about Python lmao

For simplish parallel runner https://www.gnu.org/software/parallel/ is excellent, can even automate stuff like "copy a file to remote server then run command on it" so you can make simplistic cluster computing with it

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parallel is even great for non-parallel things because of its simple CLI handling and transformation of filenames (`{}`, `{.}`, `{/}`, etc.)

e.g. `ls old/*.jpeg | parallel mv {} new/{/.}.jpg` is easier than a bash loop.[1]

[1] Yes, it should be `find -print0` or something, blah blah, it's an example.

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