Concatenating / Merging .csv on the Linux or Mac OS Terminal

For data analysis .csv files with houndreds of thousands of data sets still play a role. You might think:

Hey, why worry about .csv, that’s an ancient format, nobody uses that!

Think again! CSV files, comma separated values (that also can be separated by tabs or kind of any character you want, but never mind that) are still used a lot on in data analysis as a raw input format.

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