Deleting N lines from every start point

Question

How would I delete the 6 lines starting from every instance of a word i see?

Answer 1

I think this sed command will do what you want:

sed '/bar/,+5d' input.txt

It removes any line containing the text bar plus the five following lines.

Run as above to see the output. When you know it is working correctly use the switch --in-place=.backup to actually perform the change.