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December 1998

Setting up High Speed Modems 
- This is about configuring modems on SCO Unix and is only left here for historical purposes.
 
SCO_OSR5 Boot Up Messages 
- This is a post concening SCO Unix boot messages and is only left here for historical purposes.
 
Add more Disk space 
- So, it's time to add more disk space. There are two basic ways to approach this problem. You could replace the current disk with something larger, or simply add another disk. Both methods have their own positive and negative aspects. Let's consider some of them:
 
Understanding Device Drivers Part III 
- The first field after the name tells us the routines that are used in the driver. This driver has Open, Close, Read, Write, Ioctl and an Initialization routine.
 
Understanding Device Drivers Part II 
- When that interrupt comes that says the printer is ready, our driver program could be be filling the clist, or it could be sleeping because the clist is full.
 
Configuring Network Printers 
- HP JetDirect is probably the most common network printer.
 
Understanding Device Drivers 
- Device Driver. Two words that strike fear in the hearts of programmers and users of Unix systems.
 
Network Wiring Diagram 
- Color coded RJ-45 Wiring Charts for RJ45 connection in 110 order and for RJ45 connection in RJ pin order.
 
Adding another hard drive 
- People used to older Unices may expect more complications, and may expect to have to use "mkfs" after hand editing kernel configuration files to add the appropriate block and character devices. You certainly can do all that if you want, but "mkdev hd" is a front end that makes it much easier. If you are curious as to what goes on behind the scenes, look in /usr/lib/mkdev. The "hd" command there is a shell script, and is fairly self-explanatory.
 
Out of Disk space 
- This article is somewhat specific for SCO OSR5, but will be useful for other Unix versions and for Linux if you ignore the os specific parts.
 
Advanced TCP 
- I mentioned earlier that certain network numbers are "special", and that they would be bad choices. You may also realize (or need to know) that if the machines you are assigning numbers to are connected directly to the Internet, without going through a firewall or router that is translating or otherwise proxying network addresses, the choice of numbers isn't up to you at all. That's because the IP addresses used on the Internet are specifically asigned to the people who own them: you can't just grab any arbitrary number out of a hat and use it. You have to get your own assigned IP addressees.
 
Using Secondary drives 
- This article is fairly specific to SCO Unix, but the general concepts of moving data and creating a symbolic link do apply to any Unix and Linux.
 
Understanding Device files 
- Unix device files are not like ordinary files. Understanding their properties and use is very helpful.
 
Love it or Hate it?  
- I'm not talking about the primitive "Open file contacts.doc" type of speech control. That's no different than clicking on an icon (except perhaps that you don't have to find the icon!). What I'm envisioning is the same sort of control we have now when we create pipelines or shell scripts. That's a different level of interaction, a different level of control. Just as doing that now requires a certain type of communication skill, a certain understanding of syntax, so will the verbal computer require certain skills.
 
Self Employment  
- "If I have to work for an idiot, I might as well work for myself- Tony Lawrence" Somebody once said "I've been rich and I've been poor, and rich is better". I feel that way about being self employed. I've been self-employed since 1977, and although I did take a few years here and there working as an employee, I wouldn't have it any other way.
 
Multitech MPR200 Proxy Server 
- This is a review of an ancient Multitech MPR200 Proxy Server product and is only left here for historical purposes.
 
General Internet Security 
- This is about general security in the late 1990's and is only left here for historical purposes.
 
Setting up a Small Office Network 
- This article concerns the design and physical aspects of installing a small TCP/IP network. Some of the content may be better understood with a background knowledge of TCP/IP and routing.
 
Linux|Unix Companion 
- This book really impressed me. The author (Jochen Hein) has packed an incredible amount of information into 572 pages and has done it clearly and enjoyably.
 
Super Tars 
- General overview of Unix/Linux supertar backup software, which provide backup flexibility and bare metal recovery.
 
COPS Computer Oracle and Password System 
- COPS does not prevent attacks, or break ins but it does check your system to help you identify and eliminate security holes and weaknesses.
 
Understanding Dumb Terminals 
- This is an old article about RS232 dumb terminals and is only left here for historical purposes.