Nmap – List alive hosts in specific subnet
nmap -sP 192.168.1.0/24
sample output:
Nmap scan report for sky.johlem.net (192.168.1.1) Host is up (0.0012s latency). Nmap scan report for pulpe.johlem.net (192.168.1.2) Host is up (0.0017s latency). Nmap scan report for orange.johlem.net (192.168.1.21) Host is up (0.0055s latency). Nmap scan report for mouse.johlem.net (192.168.1.51) Host is up (0.0014s latency). Nmap done: 256 IP addresses (4 hosts up) scanned in 0.01 seconds