generate vmlinux.h
bpftool btf dump file /sys/kernel/btf/vmlinux format c > vmlinux.hcompiled into BPF ELF file
clang -O2 -g -target bpf -c execsnoop.bpf.c -o execsnoop.bpf.ogenerate BPF skeleton .skel.h
bpftool gen skeleton execsnoop.bpf.o > execsnoop.skel.h