(SCO Unix)When applying multiple SLS's

(This is an ancient post with no relevance to modern systems) Ordinarily installing the patches without rebooting will cause no problem. However, at the very least you should do a btmnt -w and make an extra copy of unix.old at each relinking step. If everything goes well, you can come back and remove the extra kernels later.



Title  Last Comment
How do I compress my backups?  
- Well, you could just run the output of tar, cpio, or whatever through compress but if even one bit of your tape or diskette goes bad, you could lose the rest of the backup. -

Pass-Through Printing  
- The idea is that if the terminal sees a special key sequence, it will start sending the data out some other port (parallel or serial) until it sees some sequence that tells it to stop. -

How do I find out what IP address a user logged in from?   2013/11/13 TonyLawrence
- Obtaining a client IP address on Linux/Unix is not always direct or easy. You may have to dig it out of shell command output. -

How do I set up a network printer or print server?   2010/06/23 TonyLawrence
- How do I set up a network printer or print server? -

What is a watchdog timer panic or error message?  
- In general, a watchdog timer is a piece of code (or hardware) that attempts to keep another piece of code (or hardware) from getting stuck in an endless loop. -

How do I capture program screens to a file or print them?   2012/09/17 TonyLawrence
- Various ways to capture text or screens on Unix/Linux and Mac OS X and Windows. -

How can I make X start on a different tty?  
- We're talking about the default X session - if you just want to start a session where you are, use "startx :1" (assuming :0 is running already and :1 is not) -

(SCO Unix)How can I assign a user process to a specific pseudo tty?   2010/08/23 TonyLawrence
- (SCO Unix) How can I assign a user process to a specific pseudo tty? -

(SCO Unix)FAQ - How can I make a printer that will print to a file?  
- (SCO Unix) Setting up a printer that will print to a file can be useful for any number of reasons. It's not hard to do. -

(SCO Unix)What is netcat and how do I use it?  
- Using direct port printing on SCO Unix with Kevin Smith's 'netcat' for SCO. Note that Linux can do this in CUPS - this is only for old SCO Unix. -

How can I recursively grep through sub-directories?   2013/07/18 IrfanRashid
- How to grep through sub-directories whether or not your Unix has recursive (GNU) grep. -

How can I automate an ftp transfer?   2011/02/03 Bagbot
- If your script is complex, I'd use use Perl Net::FTP or Kermit. You can also use "here" files fpr simple cases: -

(SCO Unix)How can I send email attachments from the command line?   2011/02/01 anonymous
- Sending attachments from the command line with mutt, uuencode and other methods. If it's just arbitrary text or a file you want to send, and don't care about it looking like a real attachment, you can use ordinary "mail" ("mailx" on some Unixes) at the command line. However, that's NOT a mime attachment - it's just your file mixed in to the mail message. However, some mail clients will see it and treat it as a real attachment, so this may be "good enough": -

(SCO Unix)How can I rename multiple files using wildcards? 2010/02/10 TonyLawrence
- (SCO Unix) How can I rename multiple files using wildcards if I don't have Linux "rename"? -

(SCO Unix)How do I clear log files?  
- (SCO Unix) There is a proper way to clean out log files - don't make the mistake of removing them! -

(SCO Unix)How do I test a smtp mail connection?   2010/09/01 alain
- (SCO Unix) How do you manually test an SMTP connection? All you need is "telnet" and these instructions. -

(SCO Unix)How do I add a default route?  
- How to add a default route on various versions of SCO Unix and have it survive a reboot. -

(SCO Unix)How do I test an imap server?  
- How to test imap from command line. The "abc1" etc at the begining of each command is just a tag you make up. Supposedly it should be unique for each line; I've found you can actually use the same tag over and over again. -

(SCO Unix)When should I use kill -9?   2010/09/26 TonyLawrence
- (SCO Unix) The idea here is that properly written programs will respond to a -15 by cleaning up anything they need to do before dying. -

 
 











 
 
(SCO Unix)How can I add or remove printers from the command line?  
- (SCO Unix) How can I add, modify or remove printers from the command line? -

(SCO Unix)How do I reset the root password if I forget it? (part 1)   2010/08/21 TonyLawrence
- (SCO Unix) Reset lost root password, Unix and Linux, with and without emergency boot media. -

(SCO Unix)How do I install a HP Network Printer or Print Server?   2011/06/08 Bill
- (SCO Unix) How to install hp jetdirect print server on Unix. Before you do anything else, the printer needs an IP address. Some models let you do that right on the printer itself, all have Windows software that will assign it, and if all else fails you can configure it with BOOTP. -

(SCO Unix)How can I change uppercase file names to lower case?   2011/03/04 anonymous
- (SCO Unix) How can I change uppercase file names to lower case? -

(SCO Unix)How to setup resolv.conf for DNS configuration   2010/05/24 alexB
- (SCO Unix) Reverse lookups (lookup name from ip) happen for every attempted connection. Edit the resolver file to get proper behavior and quicker connections. For Linux,that's /etc/host.conf; most other Unixes use /etc/resolv.conf -

(SCO Unix)How can I restrict who can login with ssh?   2010/06/27 anonymous
- (SCO Unix) There's no reason to allow every user access by ssh. You can restrict ssh logins to a specific set of users by an entry in the config file. -

(SCO Unix)How do I mount a CDROM?  
- This is an old article about mounting a CDROM in SCO Unix and is only left here for historical purposes. -

(SCO Unix)How do I make environment variables global?   2010/02/09 anonymous
- (SCO Unix) Once the variable is exported, you can change it's value and do NOT have to export it again. -

(SCO Unix)How can I monitor cpu usage?  
- (SCO Unix) This script is useful. (change "mawk" to "awk" if you don't have it- it still runs, just more slowly). -

(SCO Unix)How can I mount a SCO file system in Linux or vice-versa?   2010/07/16 nurray
- (SCO Unix) Mounting sco fs in linux - not easy, but can be done -

(SCO Unix)How can I tell what process has a network port in use?  
- How can I tell what process has a network port in use? The lsof tool is not just for network connections. It shows you detailed information about open files in general- not just network activity. -

(SCO Unix)Why do I get can't open /dev/tty errors?  
- This is an old article about 'can't open /dev/tty' errors on SCO Unix and is only left here for historical purposes. -

(SCO Unix)How can I download a boot disk?   2013/03/25 TonyLawrence
- (SCO Unix) How can I download a boot disk? Finding Boot Media for old SCO Unix systems (floppy boot disks) -

(SCO Unix)How do I print man pages from the command line?   2010/12/25 Josh
- (SCO Unix) "man" formats the text with Ctrl-H backspaces and multiple letters to make bold text. Your printer may make a mess of it. -

(SCO Unix)What are some terminal emulators I can use from windows?   2011/08/03 BenTheMeek
- (SCO Unix) Windows terminal emulators for telnet and ssh access to Unix servers. -

(SCO Unix)How do I solve "fork failed no more processes"?  
- This is an old article about SCO Unix process table tuning and is only left here for historical purposes. -

(SCO Unix)I don't understand all this half/full duplex negotiation stuff  
- (SCO Unix) Here's the basic problem. 10/100 capable network devices have 5 possible duplex modes: -

(SCO Unix)Technical FAQ 1 of 9  
- FAQ Questions and Answers Common to SCO Unix, Xenix and ODT, some Linux -

(SCO Unix)How can I increase the size of my root or other filesystem?  
- (SCO Unix) How can I increase the size of my root or other filesystem? -

(SCO Unix)My printer doesn't work at all!  
- (SCO Unix) The first test is whether or not you can print to the raw device -

(SCO Unix)What causes a trap 0x00000008 ( double panic )?   2010/10/23 anonymous
- Double Panic- the kernel panics while panicing. This is an old article about SCO Unix and is only left here for historical purposes. -

(SCO Unix)Technical FAQ 2 of 9  
- (SCO Unix) Questions and Answers Specific to OpenServer Release 5. There are also many questions which apply not only to OSR5 but also to other Unix (and possibly Xenix) versions. -

(SCO Unix)Technical FAQ 0 of 9  
- Originally a SCO Unix FAQ, I have updated this with Linux information and also included conversion help to move from SCO to Linux -

(SCO Unix)Why do I get portmapper is not responding errors?  
- This is an old article about 'portmapper' errors on SCO Unix and is only left here for historical purposes. -

(SCO Unix)What graphics driver do I use for my video card?  
- This is an old article about SCO Unix video card drivers and is only left here for historical purposes. -

(SCO Unix)Technical FAQ 7 of 9  
- Questions and Answers Related to Printing (mostly SCO Unix OSR5, some Linux) -

(SCO Unix)How can I make a shell script setuid?  
- Setuid shell scripts can be a major security hole, so that is not allowed by the SCO Unix kernel. -

(SCO Unix)What are printer interface scripts?  
- (SCO Unix) What are System V printer interface scripts? Note: these are for SysV printing - CUPS doesn't normally use these. -

(SCO Unix)How do I find out serial numbers of my various components?  
- How do I find out serial numbers of my various components? (SCO Unix) -

(SCO Unix)How can I find my Activation Key? ( license data serial number activation key )  
- (SCO Unix) How can I find my Activation Key? ( license data serialnumber -

(SCO Unix)I see in netstat that processes get stuck in TIME_WAIT  
- (SCO Unix) For some reason, OpenServer sets TIME_WAIT to 30 minutes even while stating that the recommended setting is 4 minutes! -

 
 
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(SCO Unix)What do the terms UART, 8250, 16450 and 16550 mean?  
- (SCO Unix) UART means Universal Asynchronous Receiver/Transmitter. This is a chip which receives and transmits data serially; each serial port you have will use one, though it is possible that several may be integrated into one chip. -

(SCO Unix)How do I stop banners from printing?  
- (SCO Unix) Note that there are some Unix printer interface scripts which do not use /etc/default/lpd, and you must use an option to these to disable banners. Also, some Unix printer interface scripts expect the Xenix syntax above. Aren't standards wonderful? -

(SCO Unix)What are interrupts?  
- (SCO Unix) A device uses interupts to tell the CPU that it is done doing something and is ready for more, or when it receives data that the CPU needs to process. -

(SCO Unix)How can I reconnect to a disconnected session?  
- (SCO Unix) Both screen and dislocate allow reconnection. Screen emulates vt100, dislocate just passes through your keys. -

(SCO Unix)How can I get the file from the print spooler before it prints?  
- (SCO Unix) How can I get the file from the print spooler before it prints? -

(SCO Unix)What is a virtual printer?  
- (SCO Unix) This is how you do "virtual" printers: many names all going to the same print device, but all with diferent options. -

(SCO Unix)Is my system Year 2000 compliant?
- This is an old article about Y2K on SCO Unix and is only left here for historical purposes. -

(SCO Unix)Where can I get ssh?
- This is an old article about obtaining ssh amd other code for older SCO Unix and is only left here for historical purposes. -

(SCO Unix)I have a bad block on my hard drive  
- This is an old article about SCO Unix hard drive bad blocks (badtrk) and is only left here for historical purposes. -



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