[CentOS] strange su behavior

Uwe Kiewel ml at kiewel-online.ch
Mon Mar 8 20:28:44 UTC 2010


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Am 08.03.2010 21:21, schrieb John R Pierce:
> Uwe Kiewel wrote:
>> [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:
>> ...
> 
> that almost sounds like sudo, not su.   is it aliased or something?
> 

I don't think so:

[root at halifax ~]# type su
su is hashed (/bin/su)

[root at halifax ~]# file /bin/su
/bin/su: setuid ELF 32-bit LSB shared object, Intel 80386, version 1
(SYSV), for GNU/Linux 2.6.9, stripped

[root at halifax ~]# type sudo
sudo is /usr/bin/sudo

[root at halifax ~]# file /usr/bin/sudo
/usr/bin/sudo: setuid ELF 32-bit LSB shared object, Intel 80386, version
1 (SYSV), for GNU/Linux 2.6.9, stripped

[root at halifax ~]# sum /bin/su
22494    24

[root at halifax ~]# sum /usr/bin/sudo
63311   138


Thanks,
	Uwe
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