int GetFatherPid(int pid)
{
    char dir[1024]={0};
    char path[1024] = {0};
    char buf[1024] = {0};
    int rpid = 0;
    int fpid=0;
    char fpth[1024]={0};
    struct stat st;
    ssize_t ret =0;

    sprintf(dir,"/proc/%d/",pid);

    sprintf(path,"%sstat",dir);

    if(stat(path,&st)!=0)
    {
        return
 
 -2; 
    }

    memset(buf,0,strlen(buf));

    FILE * fp = fopen(path,"r");

    ret += fread(buf + ret,1,300-ret,fp);

    fclose(fp);

    sscanf(buf,"%*d %*c%s %*c %d %*s",fpth,&fpid);

    fpth[strlen(fpth)-1]='\0';

    if(strcmp(fpth,"bash")!=0 && strcmp(fpth,"sudo")!=0 ) //bash 終端  sudo 終端
 

    {
        if(fpid==1)
        {
            return pid;
        }
        else if(fpid==2)
        {
            return -1; //核心執行緒
        }

        rpid = GetFatherPid(fpid);

        if(rpid == 0) 
        {
           rpid  = pid;
        }
    }

    return rpid;
}