Ubuntu 18.04.6 LTS (GNU/Linux 5.4.0-150-generic x86_64)

1.1 下载内核源码

cd /usr/src/
sudo git clone -b v5.4 https://github.com/torvalds/linux.git

1.2 下载书中代码

git clone https://github.com/bpftools/linux-observability-with-bpf

1.3 编译hello_world

cd linux-observability-with-bpf/code/chapter-2/hello_world