Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!cs.utexas.edu!ut-emx!csrnxt1.ae.utexas.edu!john From: john@math.utexas.edu (John R. Schutz) Newsgroups: comp.sys.next Subject: Re: More questions Message-ID: Date: 7 Aug 90 19:06:25 GMT References: <5984@milton.u.washington.edu> Sender: news@ut-emx.UUCP Lines: 57 cyliao@hardy.u.washington.edu (Chun-Yao Liao) writes: >Hi folks, this is me again, the one who "upgraded" from a "not-so-experienced" >Unix user to "Beginner-SysAdm." So here are some new dumb questions to >bother you guys again. congrats. >1. When mount an OD on multiple disk system, ALL files on the OD [...] deleted part of quote > of my files? yes, as far as I can think (unless your chown them to root, but if they know the root password on any NeXT system, they can screw that too.) >2. If I build my startup on a harddisk, then someone comes with his/her own > system disk (OD) and boot from the monitor with bod. Is he or she going > to have ALL the access of files on my harddisk as if he/she mount my > harddisk under his/her home directory on his/her OD? *NO!* You can set a hardware password from the monitor. that way, from the monitor, if you don't know the password, you can only 'b' to boot from the normal boot device. They cannot use 'bod' unless they know the hardware password. See your docs (online ones, in the system admin guide in the doc about the monitor) on how to set it. >if both are true, isn't it very dangerous to let anyone use my cube? (well, >I don't have a harddisk yet, but I am plan to. A single optical drive system >is not so usable...) Not really, if you just take normal precautions. >so is there anyway to give the permission for excecute mount and unmount only >to certain user? Well, you can change the executable of mount and 'umount' to have only the owner to have execute privileges. I read it in the user ref manual that sysadm can set it so >users cannot eject disk. Does that mean users can mount disk but not to >unmount disk? No...to eject a disk you use the command 'disk -e /dev/rod0a' to eject a disk from Mach. >mmm... I am getting more and more questions as I read through all these manuals >Thanx a lot to whoever can answer these questions. I hope this helps john -- | John R. Schutz | Internet: john@csrnxt1.ae.utexas.edu | | Center for Space Research | NeXTmail: ditto | | Programmer (NeXT) | THENET : UTCSR::JOHN | | Etc. | Standard disclaimer |