How to begin at line n in a file with sed?

Question

When using sed as sed -i 's/pattern/replacement/g' ./file.txt, how can I tell sed to skip the first 10 lines of a file, and begin the replacements on the 11th line?

Answer 1

Same with awk

awk 'NR>10 {gsub(/pattern/,"repalcement")}1' file

Answer 2

You can use address before s command in sed:

sed -i.bak '11,$s/pattern/repalcement/g' file

Here 11,$ will skip first 10 lines and start replacement from 11th line onwards.