Weka

I use head -2496 filename.csv > filename2496.csv to copy the first 2496 lines to the file as 6000 are too big for weka.

Convert from csv file:

the first row of the csv file should contains the header-->column names
java weka.core.converters.CSVLoader /media/SAMSUNG/Experiment/Isolet/isolet1+2+3+4.data1000.csv > isolet1+2+3+4.data1000.arff