这篇文章主要介绍了Linux 进程替换(exec函数)实现代码的相关资料,需要的朋友可以参考下

Linux 进程替换(exec函数)实现代码# include

#include

#include

#include

#include

#include

#include

int main()

{

pid_t id=fork();

if(id==0)

{

printf("child is running\n");

sleep(1);

char* env[]={"MYENV=/A/B/C/D/AAAA",NULL};

char* argv[]={"ls","-l","-n","-i",NULL};

// execl("/bin/ls","ls","-l","-n","-i",NULL);

// execlp("ls","ls","-l","-n","-i",NULL);

// execv("/bin/ls",argv);

// execvp("ls",argv);

// execle("./myenv","myenv",NULL,env);

execve("./myenv",argv,env);

printf("child id done\n"); //exec成功的话不执行此语句

exit(1);

}

else

{

pid_t ret=waitpid(id, NULL,0);

if(ret>0)

{

printf("father wait success\n"); }

else{

printf("child quit not normal\n");

} } return 0; }

下图就是execl execlp execv execvp的结果图

下图是execle execve的结果图