What command can I use to get a list of IP addresses used by Ubuntu systems in LAN network?
You can use
nmap to get a list of ip's that are up:
nmap -sP 10.10.10.0/24
To find out if they are Ubuntu systems is harder. You can use a portscan (
-sS, -sT or -sF for instance) and the
This does require you to have admin privileges, so you'd do something like
sudo nmap -sT -O 10.10.10.0/24
For ranges (the 0/24 part) and the options, you can check out the manpage of
nmap -sP -A 192.168.1.1/24.