настройка сети (ubuntu)

[Nrik]

#error on "sudo":
user@:~$ sudo gedit /etc/hosts
unable to lookup {hostname} via gethostbyname()
#reason: "hostname" not exists! : in file /etc/hosts 127.0.0.1 = ''
#question: how can i repair the error if i can`t edit /etc/hosts ?
##language: rus, lat, eng

[7biohazard7]

#error on "sudo":
user@:~$ sudo gedit /etc/hosts
unable to lookup {hostname} via gethostbyname()
#reason: "hostname" not exists! : in file /etc/hosts 127.0.0.1 = ''
#question: how can i repair the error if i can`t edit /etc/hosts ?
##language: rus, lat, eng

Очень непонятно написано, предположу - отредактируйте
с помощью vi.