[root@ok ~]# vim /etc/pam.d/su

下面是/etc/pam.d/su文件的内容

#%PAM-1.0auth sufficient pam_rootok.so# Uncomment the following line to implicitly trust users in the "wheel" group.#auth sufficient pam_wheel.so trust use_uid# Uncomment the following line to require a user to be in the "wheel" group.#auth required pam_wheel.so use_uidauth include system-authaccount sufficient pam_succeed_if.so uid = 0 use_uid quietaccount include system-authpassword include system-authsession include system-authsession optional pam_xauth.so

将第４行的#号去掉，然后将登陆用户加入 wheel组

[root@ok ok]# usermod -G wheel ok[ok@ok ~]$ su [root@ok ok]#

su直接切换成root

以上就是小编为大家带来的linux 普通用户切换成root免密码的实现全部内容了，希望大家多多支持~