cd ~
#sudo apt-get update
#sudo apt-get install build-essential bin86 kernel-package libqt4-dev #libncurses5-dev pkg-config
#mkdir rtlinux
cd rtlinux
#wget ftp://ftp.kernel.org/pub/linux/kernel/v4.x/linux-4.4.7.tar.xz 
wget https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patch-4.4.7-rt16.patch.gz
tar -xpf linux-4.4.7.tar.xz
gunzip patch-4.4.7-rt16.patch.gz
cp patch-4.4.7-rt16.patch linux-4.4.7
cd linux-4.4.7
cat patch-4.4.7-rt16.patch | patch -p1
make xconfig
make -j4
sudo make modules_install
sudo make install