vcgencmd measure_volts core
sudo nano /boot/config.txt
on dé-commente
framebuffer_width=1280
framebuffer_height=720
wget http://apache.crihan.fr/dist/hadoop/common/hadoop-2.8.1/hadoop-2.8.1.tar.gz
tar xvf hadoop-2.8.1.tar.gz
vcgencmd measure_volts core
sudo nano /boot/config.txt
on dé-commente
framebuffer_width=1280
framebuffer_height=720
wget http://apache.crihan.fr/dist/hadoop/common/hadoop-2.8.1/hadoop-2.8.1.tar.gz
tar xvf hadoop-2.8.1.tar.gz