I think a simpler solution would be to use head and tail:

head -n x > file.txt
tail -n x-n file.txt > file2.txt


Xavier Noria wrote:
On Apr 10, 2008, at 18:24 , Jonathan Mast wrote:

Hi, I have a ~125MB file of which I want to read lines n thru n+x and write
those into a separate file.  What is the best way to go about this?

Tie::File


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