这是一个set-root-uid程序$ls-l-rwsr-sr-x1rootroot74062011-12-1322:37./x*源代码:intmain(void){printf("UIDGID\n""Real%dReal%d\n""Effective%dEffective%d\n",getuid(),getgid(),geteuid(),getegid());seteuid(600);printf("UIDGID\n""Real%dReal%d\n""Effective%dEffective%d\n",getuid(),getgid(),geteuid(),getegid());se