Write out with multiple filenames

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Oftentimes, I need to assign different students or group of students in my class to each unique data sets for their coursework. Each one of them should work on a different data sets (preventing them from copying others' work). The data sets need to be sampled with replacement from one large data set (easy to check their answers, and minor differences should be attributed to sampling).This R script releases me from manually creating multiple unique filenames.