divide a large text file into two text files

i have a large text file more than 600 mB. i couldn't open it. is there is any way to open it? or split\divide it into smaller text files? or any code can help?

[dpb]

Look into

doc memmapfile  % perhaps

Answer 1

[per isakson]

Alternatives

• The free (as in beer) program GSplit splits the file. I was able to split a 16GB text file successfully minutes after downloading. The documentation is okey. (Runs on Windows.)

    GSplit: Split large text and similar files like large server logs and other 
    CSV files by number of lines or occurrences of a specified pattern. Optionally
    insert headers into each piece file.

• loop over the lines of the huge file and write to smaller files
• and memmapfile

[Amr Hashem]

it works... thanks