#!/bin/bash NETWORK="192.168.0.0/24" #Output formatting BOLD="\033[1m" WHITE_ON_GREY="\033[100;97m" RESET="\033[0m" sudo nmap -sn -PO "$NETWORK" | grep -oE "[a-zA-Z0-9\.\-]+\s\(([0-9]{1,3}\.){3}[0-9]{1,3}\)" | sed 's/[)(]//g' | awk -v bold="$BOLD" -v fg="$WHITE_ON_GREY" -v reset="$RESET" -f <(cat - <<-'EOD' BEGIN{ OFS="\t"; } { print $2,$1; } END{ print bold fg NR" Hosts are up" reset; } EOD )