debian make ip use network code example

Example 1: static ip debian

#Add this to /etc/network/interfaces
iface eth0 inet static
    address 192.xxx.xx.x
    netmask 255.255.xxx.xxx
    gateway 192.168.xx.xxx

Example 2: debian buster add ip alias

ip address add 172.16.251.1/24 brd + dev wlan0:0