• Habilitar Root

$sudo su

$passwd

sudo apt-get update

sudo apt-get upgrade

Ver intensidade da internet 

watch -n1 iwconfig

sudo apt-get install hardinfo

sudo apt-get install mplayer vlc

sudo add-apt-repository ppa:pipelight/stable -y && sudo apt-get update && sudo apt-get install pipelight -y && sudo pipelight-plugin --update && sudo pipelight-plugin --enable silverlight

sudo add-apt-repository ppa:webupd8team/java -y; sudo apt-get update; sudo apt-get install oracle-java7-installer -y

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Para habilitar o usuario root no ubuntu

sudo passwd root