Remove the last 1 line of output:
printf "1\n2\n3\n4\n5\n" | head -n-1 1 2 3 4
without " | head -n-1", the printf command yeilds:
printf "1\n2\n3\n4\n5\n" 1 2 3 4 5
Remove the first 1 line of output:
printf "1\n2\n3\n4\n5\n" | tail -n+2 2 3 4 5
You can change the number in any command you like. tail -n+1 doesn't seem to remove any lines, so add 1 to whatever number of lines you want to remove.