[CentOS] How to select a block in gnome-terminal or in vim

Hi, When I connect to a Cisco router and issue the show ip interface command, the output is similar as follows:

Interface IP-Address OK? Method Status Protocol Ethernet0/0 192.168.12.1 YES NVRAM up up Serial0/0 unassigned YES NVRAM administratively down down Ethernet0/1 unassigned YES NVRAM administratively down down Loopback0 1.1.1.1 YES NVRAM up up

Will anyone please tell me how to select text in block instead of line, so that I can get the IP address on all interface, in gnome-terminal as well as in vim. Many thanks!

Xiaobo