--------------- FIDO MESSAGE AREA==> TOPIC: 176 UNIX Ref: CBV00021 Date: 07/25/95 From: GUY LEFRANCOIS Time: 10:21am \/To: BENSON SCHLIESSER (Read 10 times) Subj: HOW CAN I USE CHROOT Hi Benson, > Not running a UNIX box with CHROOT on it I can't test > it, so I'll ask you. > What the hell good is it? It lets you change the current > directory and run a command without actually changing your > directory. How is it used? Actually, it changes you root directory. Upon login, your root directory usually is /. chroot can be used to change this to another directory. > Also, if it's run by a user, does it check that users > file / directory permissions before executing? chroot can not be used by users without root permissions. A normal user can therefore not chroot somewhere else. chroot is normally used by deamons, not by users. Ciao, Guy guy.lefrancois@intermedia.qc.ca --- GEcho 1.11+ * Origin: sbe L'Impromptu bbs, Deux-Montagnes, QC (1:242/846) --------------- FIDO MESSAGE AREA==> TOPIC: 176 UNIX Ref: CBV00022 Date: 07/25/95 From: LOUIS RIZZUTO Time: 08:45am \/To: WILLIAM BURROW (Read 11 times) Subj: Linux info Hi, Will. Thanks for your reply. The info. I supplied on Linux to Ryan did not and doesn't come from my personal experience. It came from a book on Linux written by authors who alleged knowledge on Linux requirements. Do the comments you made come from experience with Linux? It wasn't clear from your message. Thanks. Regards, -= Lou =- --- WILDMAIL!/WC v4.12 * Origin: Acorn I BBS * 1:2624/503 * Marlboro, NY * USR 28.8 (1:2624/503.0) --------------- FIDO MESSAGE AREA==> TOPIC: 176 UNIX Ref: CBV00023 Date: 07/25/95 From: LOUIS RIZZUTO Time: 08:48am \/To: WILLIAM BURROW (Read 11 times) Subj: Linux info Hi, Will. The information I provided to Ryan came from a book on Linux - not from my experience. Are you speaking from your experience with Linux? It wasn't clear from your msg. Thanks. Regards -= Lou =- --- WILDMAIL!/WC v4.12 * Origin: Acorn I BBS * 1:2624/503 * Marlboro, NY * USR 28.8 (1:2624/503.0) --------------- FIDO MESSAGE AREA==> TOPIC: 176 UNIX Ref: CBV00024 Date: 07/25/95 From: LAWRENCE GARVIN Time: 10:26pm \/To: JOHN POLTORAK (Read 11 times) Subj: SCO 3.2.4 * Reply to a message in PERS6018. John Poltorak said in a message to Lawrence Garvin: JP> Until recently I thought an IP address had a unique hostname, Actually, just the opposite. A 'hostname' has a unique IP address. JP> If not, is there a limit on the number of hostnames assigned to JP> an IP number Not to my knowledge. Simply a matter of the willingness of the Domain Name Service Administrator to list multiple hostnames. Of course if you are your own DNS Administrator..... :) JP> and are they prioritised in any way? Prioritized? How do you mean? lawrence@garvin.hd.co.harris.tx.us --- * Origin: My Mail Point * Houston, Texas * (1:106/6018.1) --------------- FIDO MESSAGE AREA==> TOPIC: 176 UNIX Ref: CBV00025 Date: 07/25/95 From: LAWRENCE GARVIN Time: 10:50pm \/To: JOHN POLTORAK (Read 10 times) Subj: AIX and 486 John Poltorak said in a message to Barry Pearce: JP> Architecture was never my strong point, so could you explain JP> how the Pentium is deficient in this respect? I have always JP> seen the processor as the primary instrument of 'processing' JP> rather than speeding up I/O. I didn't notice any improvement JP> in I/O when I upgraded my Intel 386DX20 to a Cyrix 486DX2-40 JP> a few months ago. Nor should you have, John. Regardless of the speed of the processor the I/O is dependent on the bus speed. On an ISA system this is 8MHz regardless of the processor involved. BP> The reason being that a Pentium box cannot shift data between BP> the disk and the network fast enough. A heavy db application BP> like oracle requires very fast disk processing, and BP> client-server means v. fast network access. Shove two BP> net cards in a pc to double the bandwidth and see what happens BP> when the net gets loaded. What Barry may have failed to emphasize is that the issue is not the Pentium processor, per se, but the architecture of the bus that transports the data from the disk subsystem to the processor/memory. On the other hand, I would consider the possibility that Fast-Wide SCSI II at 20MB/sec has the possibility. After all, Netware has been providing file services to hundreds of 'clients' on 386 technology for years. JP> Doesn't it matter about the OS you are using on the PC, or JP> the network topology or sundry other things including the JP> storage sub-system? A number of manufacturers are bringing JP> out machines with multiple processors these days, and I've JP> heard people say that Pentiums were on a par with SPARC JP> processors... In fact, I recently read an analysis that says my Sparc5 combined with it's bus structure is >LESS< efficient than a Pentium-90 on a PCI bus. lawrence@garvin.hd.co.harris.tx.us --- * Origin: My Mail Point * Houston, Texas * (1:106/6018.1) --------------- FIDO MESSAGE AREA==> TOPIC: 176 UNIX Ref: CBV00026 Date: 07/25/95 From: LAWRENCE GARVIN Time: 11:00pm \/To: JOHN POLTORAK (Read 10 times) Subj: Telneting: need to restrict it John Poltorak said in a message to Philip Blundell: JP> Tuesday July 18 1995, Philip Blundell writes to John JP> Poltorak: JP>> Are you sure about this? I can telnet to a machine from a local JP>> machine, but am unable to do so from a remote system. There must JP>> be an access control list of some sort defining accessibility. If JP>> not, how would you explain this behaviour? PB> Check out /etc/hosts.*. JP> AFAIAA the hosts file is simply a lookup table of hostnames JP> and IP addresses rather than a file restricting access. Your beliefs are correct, John. In your example above, what constitutes a 'remote' system? More specifically, does this 'remote system' exist on a different subnet; does it require crossing a router to access the destination machine. It's entirely probable that if this is so, the router is not aware of the source and/or destination network, and consequently is blocking the traffic. lawrence@garvin.hd.co.harris.tx.us --- * Origin: My Mail Point * Houston, Texas * (1:106/6018.1) --------------- FIDO MESSAGE AREA==> TOPIC: 176 UNIX Ref: CBV00027 Date: 07/25/95 From: LAWRENCE GARVIN Time: 11:02pm \/To: JOHN POLTORAK (Read 10 times) Subj: Unix - still alive ? John Poltorak said in a message to Mike Jagdis: JP> Monday July 17 1995, Mike Jagdis writes to John Poltorak: MJ> * In a message originally to Simon Ronnqvist, John Poltorak said: JP>> It would be interesting to hear Microsoft's view MJ> It doesn't really matter to MS as long as you buy into *one* of them. JP> No, they will be putting forward their proposals for JP> upgrading everything to Windows 2000 :-). Somewhere in this thread (other than the subject line).. there probably ought to be some reference to Unix. :) lawrence@garvin.hd.co.harris.tx.us --- * Origin: My Mail Point * Houston, Texas * (1:106/6018.1) --------------- FIDO MESSAGE AREA==> TOPIC: 176 UNIX Ref: CBV00028 Date: 07/25/95 From: LAWRENCE GARVIN Time: 11:04pm \/To: JOHN POLTORAK (Read 10 times) Subj: Solaris x86 John Poltorak said in a message to All: JP> Having successfully transplanted my installed copy of Solaris JP> x86 from one machine to another, I am now trying to familiarise JP> myself with it. The first thing which hits me is how JP> appallingly slow it is. It takes more than 15 mins to boot and JP> get as far as the OpenWindows File Manager. With this sort of JP> performance I have to use the command line to get anything JP> done. It was usable - though not snappy, on my 32MB 486 server, JP> but on this other machine which only has 16MB, the GUI is JP> completely unusable. Food for thought... Solaris, and OpenWindows, having been originally conceived, designed, developed, and implemented on Sparc (RISC) technology, may not have totally survived the transportation to Intel (CISC) technology. JP> I have to assume that something is misconfigured on my system JP> so would like to hear anything I should check to make sure JP> everything is optimised. I ran some utility - 'prtconf | grep JP> Memory' which said my memory size was 7MB. Most likely this is "available user memory", which is what is reported -after- the kernel steals all that it needs... plus whatever applications may be running (which may well include the XServer). This would account for about 9MB of memory. I have 32MB of RAM and 130MB of swap on my Sparc5 and even on that system, at times, it occurs to me that OpenWindows is just a mite bit slow. Mebbe dat's why nobody voted for OpenLook in the OpenLook v Motif battle. :) To the contrary, Motif running on SCO OpenServer Release 5 on a 486DX2/66 ISA with 20MB of RAM seems to fly. lawrence@garvin.hd.co.harris.tx.us --- * Origin: My Mail Point * Houston, Texas * (1:106/6018.1) --------------- FIDO MESSAGE AREA==> TOPIC: 176 UNIX Ref: CBV00029 Date: 07/25/95 From: LAWRENCE GARVIN Time: 11:09pm \/To: JOHN POLTORAK (Read 10 times) Subj: man pages John Poltorak said in a message to Paul Cadle: JP> Well it would, but I've just had to re-install Solaris and for JP> some reason I don't have any man pages - I just get 'No manual JP> entry for xxxx'. I suppose a minimal configuration doesn't JP> include man pages... and I haven't figured out how to add any JP> new programs yet. In addition to physically looking in /var/share/man (or some such similar directory path) to see if the man pages do exist, you might also check and insure that your MANPATH environment variable is set. Either of these deficiencies can result in a "No manual entry.." message. lawrence@garvin.hd.co.harris.tx.us --- * Origin: My Mail Point * Houston, Texas * (1:106/6018.1) --------------- FIDO MESSAGE AREA==> TOPIC: 176 UNIX Ref: CBV00030 Date: 07/25/95 From: LAWRENCE GARVIN Time: 11:11pm \/To: JOHN POLTORAK (Read 10 times) Subj: Networking Unix John Poltorak said in a message to All: JP> Can anyone tell me how I should go about get my Unix machine JP> networked to my others? Everything is cabled up and I have a JP> token ring card installed. This all works fine when I boot JP> up OS/2, but I have no idea if I have the necessary device JP> drivers or which start up scripts should include them. I'm JP> assuming there are no significant differences between JP> installing token ring and ethernet so any advice on ethernet JP> would be welcome... Your token ring card should have come with drivers. You might also check http://www.sun.com to see if they have any drivers available for download. lawrence@garvin.hd.co.harris.tx.us --- * Origin: My Mail Point * Houston, Texas * (1:106/6018.1)