4. netstat Netstat (Network Statistic)

command displays interfaces,

connection information,

routing table information

$netstat Output :

Execute it with the following options and write the output:

netstat t

netstat s

t netstat -i

5. ifconfig

ifconfig is used for displaying network interface information

$/sbin/ifconfig

Output :

6. who

Displays information of all users who are logged in

$who

Output :

7. whoami

The whoami command writes the user name (i.e., login name) of the owner of the current login session to standard output.

$whoami

Output :

9. tcpdump

Tcpdump prints out a description of the contents of packets on a network interface that match the boolean expression; the description is preceded by a time stamp, printed, by default, as hours, minutes, seconds, and fractions of a second since midnight.

output for ARP protocol:

$ tcpdump

Output :

.