As before, we're using
lsof to find the PID of the process running on port 8080. We use
awk to store the second column of each line into a variable
l, overwriting it with each line. In the END clause, we're left with the second column of only the last line.
xargs passes that as a parameter to the kill command.
The only notable diffirence from the command listed above is the use of awk to also complete the
tail -n 1 step. This awk pattern matches the same intended behavior of the script that was using tail. To kill all processes on that port, you could use the
NR>1 clause instead of the variable loop.