ifconfig eth0 : Display Current Config for eth0.
ifconfig eth0 192.168.1.2 : Assign IP.
ping -c 3 192.168.1.1 : Ping.
ifconfig eth0:0 192.168.1.2 : Assign multiple IP’s.
ifconfig eth0:1 192.168.1.3 : Assign second IP.
ifconfig eth0 down : Disable network card.
ifconfig eth0 up : Enable network card.
route “or” route -n : View current routing table.
arp “or” arp -n : View arp cache.
ifconfig eth0 192.168.1.2 netmask 255.255.255.0 : Assign IP/Subnet.
route add default gw 192.168.1.1 : Assign Default Gateway.
traceroute www.google.com : Trace Route.
tracepath www.google.com : Trace Path.
host www.google.com : DNS Test.
dig www.google.com : Advanced DNS Test.
Note : Some commands will need root privilege, so better to Enter as Root to perform them all.