1. ifconfig
for checking ip address of a machine
2. ip a
new version of ifconfig
3. iwconfig
For checking wireless network(wifi) ip
If You are on a virtual machine and wifi adaptor is not connected then it will not show anything
4. arp -a
Will show you every devices along with mac addresses those are connected to your network/device
5. ip n
new version of arp
6. ping 192.168.15.1
Ping is used to check is that host/ip is working or not (connectable or not)
7. netstat -ano
What's open here, machine is talking with someone else, some like arp
8. route
Where your traffic exits essential
9. ip r
new version of route