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What command can I use to get a list of IP addresses used by Ubuntu systems in LAN network?

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Duplicate: askubuntu.com/a/224620/65926 –  Eric Carvalho Dec 14 '12 at 11:12
    
possible duplicate of How to find all the used IP addresses on a network –  hhlp Dec 14 '12 at 11:31

2 Answers 2

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 -O option.

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.

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only for linux and ubuntu systems. –  Vaneet Dec 14 '12 at 12:44
    
I don't think that asking how to find servers on another OS would be ontopic? –  Nanne Dec 14 '12 at 12:46

Try nmap -sP -A 192.168.1.1/24.

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