path: bpftrace_0.24.1-1.1/tests/runtime/engine/runner.py
                child_name = os.path.basename(child_name)
                childpid = subprocess.Popen(["pidof", child_name], stdout=subprocess.PIPE, universal_newlines=True).communicate()[0].split()[0]
                bpf_call = re.sub("{{BEFORE_PID}}", str(childpid), bpf_call)
            env = {