I have data in some text file which has let\'s say 10000 rows and 2 columns. I know that I can plot it easily by plot \"filename.txt\" using 1:2 with lines . Wh
plot \"filename.txt\" using 1:2 with lines
I would recommend some commandline tools like sed, grep or bash. In your example
sed
grep
bash
head -n 2000 ./file.data > temp.data
and
tail -n 1000 temp.data > temp2.data
might work. But haven't tested if such large numbers work with head and tail.