Shell Programming and Scripting

# netstat -antup | awk '/firefox/ {sub (/:.*$/, "", $5); gsub ("\.", ",", $5); print $5}'
68,232,35,121
173,194,70,139
108,161,188,213

$ awk --version
GNU Awk 4.0.1

# netstat -antup | grep firefox | awk '{ print $5 }' | sed -e 's/:[^:]*$//' | sed "s/\./\\\\./g" | awk '!x[$0]++'
173\.194\.64\.95
74\.125\.227\.158

| sed -e 's/:[^:]*$//;s/\./,/g'

#!/bin/bash -x  fox="firefox"  declare -a white  while true  do  sleep 2    stat=`netstat -antup | awk '{ print $7 }' | grep firefox | sed -ne "s/^[^\/]\+\///p" | awk '!x[$0]++';`   b=$stat       if [ "$b" = "$fox" ];      then       ip+=`netstat -antup | grep firefox | awk '{ print $5 }' | sed -e 's/:[^:]*$//' | awk '!x[$0]++';`          for c in "${ip[@]}"         do           for d in "${white[@]}"           do             if [ "$c" -eq "$d"]             then                 echo -e "${white[$d]} in array\n"              else                  echo -e "$c is not in array"             # clear array to avoid duplicates            unset ip             fi          done done  fi  done

ip+=`netstat -antup | grep firefox | awk '{ print $5 }' | sed -e 's/:[^:]*$//' | awk '!x[$0]++';`

echo -e "${ip[0]}\n"

getip=`netstat -antup | grep firefox | awk '{ print $5 }' | sed -e 's/:[^:]*$//;s/\./,/g;' | awk '!x[$0]++';`
ip=(`echo $getip | tr " " "\n"`)