2 examples for ifconfig

  ## Show or configure network interfaces:

# Show all network interfaces:
ifconfig -a

# Show a network interface:
ifconfig eth0
ifconfig wlan0

# Assign an address to an interface (may need root or sudo privileges):
ifconfig eth0 192.168.108.24

# Create a virtual interface linked to a real one and assign an address:
ifconfig eth0:1 10.0.0.53

# Enable or disable an interface:
ifconfig eth0 down
ifconfig wlan1 up
        

  # Find your local IP address
ifconfig | grep -Eo 'inet (addr:)?([0-9]*\.){3}[0-9]*' | grep -Eo '([0-9]*\.){3}[0-9]*' | grep -v '127.0.0.1'