Newsgroups: comp.os.minix Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!caen!ox.com!math.fu-berlin.de!fub!dobag.in-berlin.de!jac From: jac@dobag.in-berlin.de (Joerg Conradt) Subject: Re: su Message-ID: Organization: Dobag Computer Systems Berlin References: <50417@nigel.ee.udel.edu> Date: Fri, 12 Apr 91 21:12:26 GMT Lines: 43 cla@dobag.in-berlin.de (Christian Lampl) writes: >dieter flunkert 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: 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 -- UUCP: jac@dobag.in-berlin.de | - The number of viewers watching you is Alias Joerg Conradt | proportional to the stupidity of your 1000 Berlin 41 Germany | action. ++ 0307958397 | - "Murphy was an optimist"