How to add a second IP address to the NIC in linux

In linux, how to add a second IP address to the NIC-Linux Enterprise Application-Linux server application information is as follows. Add an alias (for example, pop) to the network configuration in the graphic interface and bind the alias to the driver of the same Nic. However, you can define another ip address (for example, 33.36.3.6 ), I used very well.

Ping this

CODE: $ ping pop $64 bytes from pop (33.36.3.6): icmp_seq = 6 ttl = 255 time = 144 usc $64 bytes from pop (33.36.3.6): icmp_seq = 6 ttl = 255 time = 144 usc $64 bytes from pop (33.36.3.6): icmp_seq = 6 ttl = 255 time = 144 usc