Linux split command (dividing a large file into several small files based on the number of rows)

How to divide a large file into several small files

For example, you can divide a blm.txt file into 1000 small files prefixed with BLM _. The suffix is in the form of coefficients and the suffix is in the form of four digits.

First use

WC-l blm.txt reads the total number of lines in the blm.txt File

Use the split command

Split-l 2482 ../BLM/blm.txt-D-A 4 BLM _

The blm.txt file is divided into several small files. Each file contains 2482 rows (-l 2482) with the prefix BLM _. The coefficient is not a letter but a number (-D ), suffix coefficient is four digits (-a 4)