Syntax:

split -d -l <no. of lines> <input file> <prefix name>

Example:

split -d -l 3 testsplit.txt testsplit.txt.

here, '-d' option will split files with numeric suffix like x00, x01, … x0n

here, '-l' is used to split a file with customize line numbers.

in this case, input file has got 9 rows in it , so above split command will split file into 3 different other files based on prefix name, as shown below.