#! /bin/sh -e

if [ -z "$1" ]; then
    echo >&2 "No version specified, stopping."
    exit 1
fi

VERSION="$1"
MAJOR="${1%.*}"

rm -f linux
wget -c "ftp://ftp.kernel.org/pub/linux/kernel/v$MAJOR/linux-$VERSION.tar.bz2"
tar xjvf "linux-$VERSION.tar.bz2"
if [ -h linux ]; then mv linux "linux-$VERSION"; fi
ln -s "linux-$VERSION" linux