NETWORK UTILITY COMMAND
IFCONFIG
ifconfig utility is used to configure network interface parameters.
Mostly we use this command to check the IP address assigned to the system.
TRACERROUTE
traceroute is a network troubleshooting utility which shows number of hops taken to reach destination also determine packets traveling path. Below we are tracing route to global DNS server IP Address and able to reach destination also shows path of that packet is traveling.
NETSTAT
Netstat (Network Statistic) command display connection info, routing table information etc. To displays routing table information use option as -r.
PING
PING (Packet Internet Groper) command is the best way to test connectivity between two nodes. Whether it is Local Area Network (LAN) or Wide Area Network (WAN). Ping use ICMP (Internet Control Message Protocol) to communicate to other devices. You can ping host name of ip address using below command.
ARP
ARP (Address Resolution Protocol) is useful to view / add the contents of the kernel’s ARP tables.
Computer Networking 