With Text File Splitter application you will be able to split large text files. It has both a nice GUI and a command-line.

Tests with a 1.2 Gig text file split into 100 meg files average a little over 12 minutes total. Each file took about a minute to be created.

Split large text files using this utility. It has both a nice GUI and a command-line.

Look at the README file for information on the command line switches.

This utility will split files using several different criteria:
- By number of lines
- By text chunk size
- By text matching: Partial or Literal
- By regular expression

Usage: TextFileSplitter [options] -i= -o=

Requirements:
* NET Framework 2.0

FIXED:
Output directory set on command-line sometimes caused program to crash.

The license of this software is Freeware, you can free download and free use this file splitter software.