Как отредактировать файлы в Корне с Gedit

Я должен отредактировать файл для лаборатории, но у меня нет разрешения, как это только для укоренения и когда я прохожу корень, я получаю это

    ** (gedit:3530): WARNING **: The connection is closed

    (gedit:3530): EggSMClient-WARNING **: Failed to connect to the session manager: None of the authentication protocols specified are supported


 ** (gedit:3530): WARNING **: Could not connect to session bus
[03/30/2017 16:30] root@ubuntu:/home/seed# ^C
[03/30/2017 16:31] root@ubuntu:/home/seed# gksudo gedit/etc/bind/named.config.options

 ** (gksudo:3539): WARNING **: The connection is closed

(gksudo:3539): GConf-WARNING **: Client failed to connect to the D-BUS daemon:
Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.
GConf Error: No D-BUS daemon running


(gksudo:3539): GConf-WARNING **: Client failed to connect to the D-BUS daemon:
Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.
GConf Error: No D-BUS daemon running


(gksudo:3539): GConf-WARNING **: Client failed to connect to the D-BUS daemon:
Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.
GConf Error: No D-BUS daemon running


(gksudo:3539): GConf-WARNING **: Client failed to connect to the D-BUS daemon:
Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.
GConf Error: No D-BUS daemon running


(gksudo:3539): GConf-CRITICAL **: gconf_value_free: assertion `value != NULL' failed

** (gedit:3542): WARNING **: The connection is closed

(gedit:3542): EggSMClient-WARNING **: Failed to connect to the session manager: None of the authentication protocols specified are supported


** (gedit:3542): WARNING **: Could not connect to session bus

Это - команда, которую я использовал, после того как я получил Корневой доступ

[03/30/2017 16:32] root@ubuntu:/home/seed# gksudo gedit /etc/bind/named.config.options

Я должен добавить файл дампа к опциям. Как я получаю доступ?