列出所有连接到本地网络的设备

Posted 2021-02-23

Bash script to list all devices (ip and hostname) connected to your local network.
Some formatting is done, and a summary is printed at the end.
Requires nmap.

#!/bin/bash
 
NETWORK="192.168.1.0/24"
#Output formatting
BOLD="33[1m"
WHITE_ON_GREY="33[100;97m"
RESET="33[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="	";
        }
        { print $2,$1; }
        END{
                print bold fg NR" Hosts are up" reset;
        }
EOD
)