To print N lines of a file from <start> to <end>
syntax
sed -n ‘<start>,<end> p’ filename
Examples
To print line 10 to 20 from the file knol.txt
sed -n ‘10,20p’ knol.txt
To print line 10 to end from the file knol.txt
sed -n ’10,$p’ knol.txt
To print nth line of a file
sed -n ‘p’ filename