emacs
sudo:
(require ‘tramp) C-c C-f /sudo::/path/to/file
edit hosts
sh
gedit /etc/hosts
# restart network
/etc/init.d/networking restart
adjust screen brightness 记录屏幕亮度
sh
gedit /etc/rc.local
# append the following line before "exit"
echo #brightness# > /sys/class/backlight/acpi_video0/brightness
add name server
http://unix.stackexchange.com/questions/128220/how-do-i-set-my-dns-on-ubuntu-14-04
Ubuntu 14.04 trusty uses resolvconf to generate /etc/resolv.conf file, therefore we need to modify the the config of resolvconf. Prepend lines as follows and let resolvconf regenerate resolv.conf
sh
sudo bash -c "echo \"nameserver 8.8.8.8\" >> /etc/resolvconf/resolv.conf.d/head"
sudo bash -c "echo \"nameserver 8.8.4.4\" >> /etc/resolvconf/resolv.conf.d/head"
sudo resolvconf -u