Add a column to a file using a shell script

My college classmates asked me a script question, presumably the need is to see all the ports open, but also to know the application path of each port, and to be flush with the previous data, is to add a column of data. I butt eyes, very easy, but because of the busy, so I said at noon to send him the past, but to his own writing, all kinds of problems ah, the use of awk find and find, have to say awk is very great, the script is as follows:

show_path.sh

#!/bin/bashpid= ' netstat-lntup |awk  '{if (nr>2) {print $7}}' / ' ' {print $} ' `  for inch $pid  Do   pwdx $pid Done

Execute Script all.sh

#!/bin/'{if (nr>2) print}' >>\ t "

The runtime only needs to execute the all.sh script, as follows:

Add a column to a file using a shell script