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In this tutorial, Satish explains how to determine the number of fields and records in a file. Using the example file one.txt, he demonstrates that each record may have a different number of fields. By using the variable nF, which represents the number of fields, Satish shows how to calculate the number of fields per record. This is done by considering the default record separator as a new line. The nF variable will output the number of fields in each record.
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