[CentOS] strange su behavior

Uwe Kiewel ml at kiewel-online.ch
Mon Mar 8 20:16:35 UTC 2010


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Hi,

I have a strange su hehavior on a CentOS 5.4 32Bit installation in a
VMware ESXi virtualizied environment:

If I am root and want to change the user to a non-root user, the system
prompts me for a password:


[root at halifax ~]# useradd test00
[root at halifax ~]# su - test00


We trust you have received the usual lecture from the local System
Administrator. It usually boils down to these three things:

    #1) Respect the privacy of others.
    #2) Think before you type.
    #3) With great power comes great responsibility.

Password:

[test00 at halifax ~]$ logout
[root at halifax ~]# su - test00
[test00 at halifax ~]$ logout
[root at halifax ~]#


At this test procedure I just hit the enter key at the password promt.


Do you have any idea for this behavoir? I expect to do so from root to
any account _without_ being prompted for the password.

Thanks,
	Uwe
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