- exec系列
#include<stdio.h> #include<stdlib.h> #include<string.h> #include<unistd.h> #include<sys/types.h> int main() { pid_t pid; pid_t pid2; pid=fork(); char buf[1024]; if(pid==0) { pid2=getpid(); printf("this is a child process %d\n",pid2); sprintf(buf,"/proc/%d/maps",pid2);//显示进程映射了的内存区域和访问权限 execlp("/bin/cat","cat",buf,NULL); } else { printf("I am the parent %d and create the child %d\n",getpid(),pid); sleep(40); wait(NULL); printf("child complete!"); } return 0; }
输出结果: