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From: cla@dobag.in-berlin.de (Christian Lampl)
Newsgroups: comp.os.minix
Subject: Re: su
Message-ID: <IVXPNRM@dobag.in-berlin.de>
Date: 12 Apr 91 23:04:57 GMT
References: <50417@nigel.ee.udel.edu> <RFXPIGF@dobag.in-berlin.de> <DSXPCDR@dobag.in-berlin.de>
Organization: Dobag Computer Systems Berlin
Lines: 50

jac@dobag.in-berlin.de (Joerg Conradt) writes:

>cla@dobag.in-berlin.de (Christian Lampl) writes:

>>dieter flunkert <d_flunkert@cen.jrc.it> writes:

>>>Hey all,
>>>I have a question concerning su.  If I use su which is on my harddisk it works fine.
>>>But if I use the copy I have on /tmp on the ram disk, it doesn't work.  It askes
>>>for the password, but after typing in the right one, I'm still not root.
>>>Any ideas?

>>>Dieter

>>>Dieter Flunkert		d_flunkert@cen.jrc.it

>>Try :
>>$ cd /tmp
>>$ chmod 4755 su

>>That must be all !!!

>>Christian Lampl   UUCP: cla@dobag.in-berlin.de

>Oh no, Christian!!!!!!

>Of course you first have to change dir. to /tmp and then exec the chmod
>command! Though a correct way to make it work would be:

I did it !!!

><Log in as root>
>cd /tmp
>chmod 4755 su
>exit

>After this it will work. The chmod command sets the s-bit, which makes the
>user running the su-command root, and you have to be root if you want to
>change your userid or groupid! Otherwise every user could do so and there
>is no bit of system-security!!!
>Cheers Joerg

That's true !! I forgot to write it down !! Sorry !!
Bye
  Christian !!!

-- 
cla@dobag.in-berlin.de |-An optimist believes we live in the best world   |
Christian Lampl        | possible; a pessimist fears this is true !!      |
Berlin, Germany        |-There are no bugs, only unrecognized features !! |