#split #file by #lines in #bash

split_file_by_line.sh

 for file in *.txt; do split -l 1 -d --additional-suffix=${${file}%.*}_$(uuidgen).xml $file;done
 
# split by size
split -b 256M --additional-suffix=.csv myfile.csv splitted_

# split 5 parts taking lines
split --number=l/5 inputfile outputprefix --additional-suffix=.csv

#split keeping header
tail -n +2 operate.csv | split -l 2 - --filter='sh -c "{ head -n1 operate.csv; cat; } > $FILE"'