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

# linux  # types  # string  # stat  # int  # id  # pid_t  # main  # 这篇文章  # 相关资料  # fork