nl command + number each line in a text file only from the third line

Question

I want to number each line in a text file on Linux/solaris by nl command

but only from the third line - is it possible ? and if yes please advice how ?

for example

line1
line2
1 line3
2 line4

score 3 · Accepted Answer · answered Apr 17 '12 at 14:34

3

f=filename
head -2 $f; sed '1,2d' $f | nl

answered Apr 17 '12 at 14:34

glenn jackman

1 Answers1