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How to make multiple small file out of a single file?

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# 1  
Old 10-18-2012
How to make multiple small file out of a single file?
Hi,

I have a file that consist of around six million line, now the task is to divide this file into 12 small file so that each file would have half a million lines in it.

Thanks.
# 2  
Old 10-18-2012
Read the man page for split.
This User Gave Thanks to elixir_sinari For This Post:
mukulverma2408
# 3  
Old 10-18-2012
Use sed
You can use sed and do it in a very nice way.

$ sed 1,500000p

or something like that.

Don't use split for straight forward line splitting.

-Girish
# 4  
Old 10-18-2012
Quote:
Originally Posted by Girish Venkatac
You can use sed and do it in a very nice way.

$ sed 1,500000p

or something like that.

Don't use split for straight forward line splitting.

-Girish
Absolutely terrible advice.

split is the perfect tool for the job. This task requires a little arithmetic and creating multiple files with unique names. split handles both. sed handles neither.

Ironically, your "straight forward" sed suggestion is seriously broken: sed 1,500000p will print the first 500000 lines twice and the next 11.5 million once.

Regards and welcome to the forum,
Alister
Last edited by alister; 10-18-2012 at 09:41 AM..
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