Display Current Config for eth0: ifconfig eth0
Assign IP: ifconfig eth0 192.168.1.2
Assign IP/Subnet: ifconfig eth0 192.168.1.2 netmask 255.255.255.0
Assign Default Gateway: route add default gw 192.168.1.1
Assign multiple IP's: ifconfig eth0:0 192.168.1.2
Assign second IP: ifconfig eth0:1 192.168.1.3
Disable network card: ifconfig eth0 down
Enable network card: ifconfig eth0 up
View current routing table: route "or" route -n
View arp cache: arp "or" arp -n
Ping: ping -c 3 192.168.1.1
Trace Route: traceroute www.softwareadda.blogspot.com
Trace Path: tracepath www.softwareadda.blogspot.com
DNS Test: host www.whatismyip.com
Advanced DNS Test: dig www.softwareadda.blogspot.com
Reverse Lookup: host 66.11.119.69
Advanced Reverse Lookup: dig -x 66.11.119.69