Building custom kernel module

  230  apt-get install build-essential libssl-dev
  231  arch="$(uname -m)"
  232  release="$(uname -r)"
  233  upstream="${release%%-*}"
  234  local="${release#*-}"
  235  echo $release
  236  echo $local 
  237  echo $upstream
  238  mkdir -p /usr/src
  239  wget -O "/usr/src/linux-${upstream}.tar.xz" "https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-${upstream}.tar.xz"
  240  tar xf "/usr/src/linux-${upstream}.tar.xz" -C /usr/src/
  241  ln -fns "/usr/src/linux-${upstream}" /usr/src/linux
  242  ln -fns "/usr/src/linux-${upstream}" "/lib/modules/${release}/build"
  243  zcat /proc/config.gz > /usr/src/linux/.config
  244  printf 'CONFIG_LOCALVERSION="%s"\nCONFIG_CROSS_COMPILE=""\n' "${local:+-$local}" >> /usr/src/linux/.config
  245  wget -O /usr/src/linux/Module.symvers "http://mirror.scaleway.com/kernel/${arch}/${release}/Module.symvers"
  246  apt-get install -y libssl-dev
  247  make -C /usr/src/linux prepare modules_prepare
  248  KDIR=/lib/modules/$(uname -r)/build/
  249  apt-get install virtualbox-dkms
  250  apt-get update
  251  apt-get upgrade
  252  apt-get install virtualbox-dkms
  253  history