Records are potentially very different from lines. You could have your own delimiters and have a record spanning several lines. If each line is a single record, then you could still run the following command under ksh:
Code:
sed -n "50000,200000p" file_to_cut_lines_from | cat > file_to_cut_lines_from
Though I really dont know if you can do this with such a large file. Even if it works, it will take a really long time to get through the file.
