How do you look active network interfaces on Linux box?

Two commands that help to view active network connections are:
ifconfig and iwconfig.

ifconfig

ifconfig displays the current active network interfaces on the box. iwconfig is used to display wireless interfaces. Both commands are also used to configure a network interface.

$ ifconfig

$ iwconfig

 

 

To learn more about the commands use the following:

$ man ifconfig

$ man iwconfig

If you are using a wireless adapter you can use iwconfig to view the wireless connections. eth0 is the dedicated network interface.

Taking down and up

We can bring down and bring up a network connection using this command. For example, to bring down the connection, we can use the following command:

$ ifconfig eth0 down

To bring up the network connection

$ ifconfig eth0 up