Revision Information ******************** Version: 199908040 Date: 4 August 1999 Author: Stephen M. Dunn URL: http://staff.ussinc.com/~steved/scofaq/ Recent Revision History o 199908040: Update to information on recovering a lost root password; updated pointer to Hylafax; update to Year 2000 information o 199901290: Update to Year 2000 information o 199812210: Removed reference to Digifax o 199811060: Update to Year 2000 information o 199809300: Additional information on PC Card drivers; updated entry on tcpdump; changed URL for TA search o 199805070: Fixed a typo in the entry on having MMDF send email to multiple UUCP recipients in one job; added a note to the swap space section; added a pointer to a commercial Zmodem product; updated link for ordering Skunkware o 199805050: Removed outdated reference to computer book list; hopefully a new home will be found soon and it can be put back o 199802110: Update to Microlite information DISCLAIMER: I try to keep this information correct, up-to-date, and useful. From time to time, errors and oversights will occur. While this group is read by numerous SCO staff and other experts, and they tend to catch any mistakes I make, there is no guarantee that the information below is 100% right. THANKS: I can't do this without the help of a number of other people. You know who you are. Thank you. ____________________________________________________________________________ Table of Contents ***************** One Bit of Administrivia ======================== How Do I Ask A Question? ======================== Questions and Answers Common to Unix, Xenix and ODT =================================================== o How do I stop banners from printing? o Are there any screen savers? o Is tar/cpio a good backup program? o How do I compress my backups? o What are some third-party backup/recovery products? o I don't like being restricted to 14 character filenames o How do I get a copy of adb? o I can't find crypt o What do I need to compile programs? o What does the NCALL kernel parameter affect? o How do I reset the root password if I forget it? (part 1) o How do I reset the root password if I forget it? (part 2) o How do I reset the root password if I forget it? (part 3) o How do I crash out of the install script? o Why can't fsck find my lost+found directory? o I want more space in my lost+found directory o How do I find out serial numbers of my various components? o How do I solve an "arglist too long"? o What versions/configurations am I using? o I have a bad block on my hard drive o My system is slow o Why did my region table overflow? o How do I solve "fork failed: no more processes"? o How are minor device numbers assigned by mkdev hd? o I need fax software. Who makes it? o How much swap space do I need? o Can I add more swap space? o Do haltsys and reboot do a sync()? o How can I get more than 64k inodes? o Where do I get zmodem? o Where do I get kermit? o I get messages saying "stat() failed: /tmp/croutPPGa00288: no such file" o Does SCO support my hardware? o How do I get a file off my distribution diskettes? o Will I have problems upgrading my hardware? o I typed in the wrong serial number! o Why does fsck want a scratch file? o How can I boot multiple operating systems? o How do I set disk space quotas? o How do I find out what IP address a user logged in from? o My ANSI terminal emulator doesn't work properly o What is Skunkware? o Can I replace csh with tcsh? o Is my system Year 2000 compliant? Questions and Answers Specific to OpenServer Release 5 ====================================================== o Graphical characters don't work o sar doesn't work o My emergency floppies don't have enough inodes o I'm having trouble with licensing and registration o sysadmsh is missing o Will Release 5 run my older binaries? o I loaded a patch but it didn't take effect o What patches should I use? o What patches are on my system? o What's this free copy of SCO Unix I keep hearing about? o I'm having trouble using my ATAPI CD-ROM o My >2GB ATA hard drive doesn't work with OSR5 o My floppy drive doesn't work reliably o People log out but still show up in who o Can I perform an in-place upgrade? o How do I access online documentation from a browser? o Can I use the scohelp server as a Web server? o Is there a packet sniffer (tcpdump) available? Questions and Answers Specific to Unix/ODT ========================================== o I have a system memory dump in my swap space; how do I delete it? o How do I save kernel panic dumps to tape? o At boot time, the "Enter the root password or ^D" message doesn't work! o My pre-EAFS filesystem gives errors on filenames greater than 14 chars o I just upgraded to 3.2v4 but I still can't use long filenames o The permissions on /usr/adm/sa and its children are wrong o I get an error "Cannot obtain database information on this terminal" o I need help configuring MMDF o What is the new "low" security level in 3.2v4? o My AHA154x/174x isn't being detected o How do I upgrade from an n-user licence? o How do I get MMDF to send one copy of a message to many people? o My system is slow or hangs when sizing memory o My system doesn't recognize files starting with #! o Where do I get POP binaries? o How do I fix a kernel trap 0x00000006? o How do I configure an EIDE drive to work on 3.2v4.x? o How do I change my SCSI host adapter? o My machine had a panic. How do I find out why? o How do I find out the names of BTLDs on a BTLD diskette? o My keyboard locks up o My machine locks up at boot time o How can I use a PC Card (PCMCIA) with Unix? o How much RAM can my system use? Questions and Answers about TCP/IP and NFS ========================================== o telnet doesn't work properly o How do I know if I have enough streams buffers for TCP/IP and/or NFS? o TCP/IP gives messages like "Notice: TCP SUM: SRC 89270107 SUM 0000D7AD" o How do I get /etc/issue to print for telnet sessions? o What does "WARNING: tcp_deqdata" mean? o Ping is really slow Questions and Answers about Serial Communications and UUCP ========================================================== o My serial connections are losing characters o What do the terms UART, 8250, 16450 and 16550 mean? o How do I adjust my 16550's trigger level? o I can transfer small files via UUCP but large ones won't go o I can transfer small files via UUCP but large ones go really slowly o How do I get better UUCP throughput? o How do I change uucico's window size? o I increased my window size but nothing changed o I increased my window size and UUCP broke! o UUCP frequently has to resend packets o How do I change uucico's packet timeout? o What special considerations are there regarding my Telebit modem? o What are all the V.something codes, MNP, HST, etc.? o How do I maximize serial throughput? o My data-compressing modem doesn't work much faster than my old modem o A BSD-based machine can't connect to mine via UUCP o Where can I get more information on UUCP protocols? o I edited my gettydefs and things broke o I can't get shared dial-in and dial-out working o What are some common settings for my modem? ____________________________________________________________________________ One Bit of Administrivia ************************ There are two different FAQ lists that periodically get posted here. This is the technical one. If you have a question regarding net.etiquette, the administration of these mailing lists/newsgroups, how to contact SCO, where to look on the net for SCO ports of software, or how to download files from SCO's systems, please look for the Administrative FAQ. It will probably answer your question. These two FAQs are posted at the same time, at intervals of roughly two weeks. Note in particular that if you require instructions on how to contact SCO, download SLSes, or look at various anonymous archive sites, you should look in the Administrative FAQ. I should also note that you may see references to TAs (Technical Articles), or to their old name IT Scripts, in various places in the FAQ. These are SCO's documents on various technical issues with SCO products. The URL for the searchable library of TAs is http://www.sco.com/ta/. If you wish to search for a particular TA by number, replace nnnnnn in the example below with that number: http://www5.sco.com/cgi-bin/ssl_reference?nnnnnn ____________________________________________________________________________ How Do I Ask A Question? ************************ First, of course, you look for the information in the documentation, and in the FAQ. You use any other local resources which are available as well, such as other users or administrators who might be able to help you. On OpenServer Release 5, using the search all documents option in scohelp may be useful in your search. SCO's Web site includes a searchable list of technical articles, described at the bottom of the table of contents above; these can be invaluable aids in resolving problems. SCOForum on Compuserve (see the Administrative FAQ for more information) is also an excellent resource. If none of those approaches help, gather as much information as you can before posting. Your chances of getting answers which are friendly, helpful, and correct are greatly enhanced if you provide the necessary information. If you say simply "My SCO system doesn't work, when I use it it gives an error message with the tape, help," you've told us nothing. Provide exact product names and versions. Tell us exactly what hardware and software you're using. Provide instructions on how you can cause the problem, if it's reproducible. Give verbatim error messages. Tell us what, if any, patches and updates are applied to your system.