Here are two nice sed calls that I did today:
To delete 6 lines out of every file that has a particular line in it:
grep -n "The number of passes was" | xargs -L1 -t sed -i -e '/The number of passes was/,+6d'
To delete all lines containing a match out of every file:
grep -n "$start_" | xargs -L1 -t sed -i -e '/\$start_/,+1d'
the -t in xargs is just to echo which files were altered to the screen, the -i in sed is modify in place (very handy), the +1 before the d in the second command was probably unneccesary.
