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[root@sample ~]# usermod -G wheel CentOSpub ¡¡¡û ½«Ò»°ãÓû§ CentOSpub ¼ÓÔÚ¹ÜÀíÔ±×éwheel×éÖÐ

[root@sample ~]# vi /etc/pam.d/su ¡¡¡û ´ò¿ªÕâ¸öÅäÖÃÎļþ

#auth required /lib/security/$ISA/pam_wheel.so use_uid ¡¡ ¡û ÕÒµ½´ËÐУ¬È¥µôÐÐÊ׵ġ°#¡±
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auth required /lib/security/$ISA/pam_wheel.so use_uid¡¡ ¡û ±äΪ´Ë״̬£¨´óÔ¼ÔÚµÚ6ÐеÄλÖã©

[root@sample ~]# echo "SU_WHEEL_ONLY yes" >> /etc/login.defs¡¡¡û Ìí¼ÓÓï¾äµ½ÐÐÄ©

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