traceroute
- print the route packets take to network host
ifconfig
- interface configurator. view ip address and mac address
ping
- (Packet INternet Groper) test connectivity between two nodes
netstat
- display connection info, routing table information etc
dig
and nslookup
- dns information
route
- shows and manipulate ip routing table
host
- find name to IP or IP to name in IPv4 or IPv6 and also query DNS records
arp
- (Address Resolution Protocol) view / add the contents of the kernel’s ARP tables
ethtool
- view, setting speed and duplex of your Network Interface Card (NIC)
iwconfig
- configure a wireless network interface
hostname
- to identify in a network
system-config-network
- configure network settings in a terminal GUI