In my article, Associate Extensionless Files with Notepad, I explain how to navigate the labyrinthine maze of Windows dialogue menus to assign Microsoft’s Notepad text editor as the opening application for files without extensions. In this post, I’ll show you how to associate any file type with any program (including Notepad) in less than five seconds.

Ready? Don’t blink, you’ll miss it.. ;)

Modify any file extension association in five seconds

Open the Windows command prompt and enter the following command:

assoc .extension=fileType

It’s that easy. What is happening here? Let’s break it down, just for fun:

• assoc — Windows file-association command
• .extension — the extension of the file for which you would like to associate
• fileType — the type of file that you would like to associate with your extension

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Monitoring your computer’s Internet activity is a powerful tool, enabling you to:

• keep an eye on background processes
• reveal viruses and other malware
• expose unauthorized access
• monitor running programs
• log process activity

..and much more. The best part? It’s super-easy. Here’s how I do it on Windows XP:

1. Open the command prompt and type “netstat -n 5 > scan.txt”
2. After a minute or two (or any amount of time), press Ctrl+C to stop monitoring
3. Type “scan.txt” to open the log file and check the results

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Even with all the fancy-pants new features found in Windows XP and now Vista, Microsoft Windows 98 (Second Edition) remains our favorite Windows-flavored operating system. We love it so much, we still use it on one of our trusty laptops. Over the years, we have discovered several very useful functions available via the command line or even the “Run” prompt (Start → Run...). Anyway, without spending too much time researching or explaining these wonderful tools, we figured posting the information online may prove beneficial at some point in the future. So, without further ado, we present this working repository of helpful MS run commands:

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One of our favorite command-line screensavers, DAZZLE is a two-dimensional kaleidoscopic program featuring a timeless display of perpetually evolving psychedelic viewscapes. Users may interactively manipulate over thirty image-creation algorithms, or set the program to automatically generate hours of dynamically morphing displays of colorful patterns and geometrically complex graphics.

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This brief tutorial on hiding content applies to Windows 95, 98, and 98SE. Although this method may be old hat or even irrelevant, I have found it useful on a number of occasions, and therefore found it worthwhile to include here for the sake of prosperity.

On Windows 98SE (and others), it is possible to create a folder that is both listed and inaccessible via the Windows file system. Using an old DOS trick involving an obscure character reference, we create a folder that, when clicked on via Windows, produces a "The File does not Exist" error message, thus denying any access. This "hidden" folder is completely accessible via DOS, and functions as any other "regular" folder. In Windows, the folder will appear with an underscore preceding its given name. For example, using this method to create a hidden folder named "test" will produce a folder that appears as "_test" when viewed via Windows.

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Note: This article assumes a basic familiarity with the DOS command prompt, and is somewhat of a continuation of our previous article on DOS, Basic DOS Commands. Here, we are exploring a few of the more interesting commands available via the DOS command prompt. For a more complete reference please consult the Windows Help file (Windows XP) by entering

hh.exe ms-its:C:\WINDOWS\Help\ntcmds.chm::/ntcmds.htm

at the command line prompt (or via the Start > Run... dialogue box). For a brief overview of essential DOS commands, characters, devices, and variables, check out DOS Fundamentals.

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A brief overview of essential DOS commands, characters, devices, and variables

Ahh, the fun I have at work while experimenting with the command line. I will be the first to admit that I understand very little of DOS, especially when considering the scope of its functional capacity. Nonetheless, I am taking the time to chronicle a few interesting DOScoveries here in this article, as well as in at least a couple of others (see related articles section at the end of this article).

The first thing that I should mention is that there are at least several different entities commonly referred to as "DOS". Windows 98SE and earlier run on the MS-DOS kernel, which is directly accessible by pressing the F8 key repeatedly (after the beep) during computer startup. Windows 2000, Windows XP, and beyond do not run on the MS-DOS kernel, but do provide two MS-DOS-like programs, the command prompt Cmd.exe, and the MS-DOS emulator Command.com. For more information, you may want to explore the difference between Cmd.exe and Command.com before diving in..

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DOS (Disk Operation System) is a tool which allows you to control the operation of the IBM PC. DOS is software which was written to control hardware. Here is a summary of some essential DOS commands.

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Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2000 Microsoft Corp.

H:\>ping localhost

Pinging mozilla.biz [127.0.0.1] with 32 bytes of data:

Reply from 127.0.0.1: bytes=32 time<10ms TTL=128
Reply from 127.0.0.1: bytes=32 time<10ms TTL=128
Reply from 127.0.0.1: bytes=32 time<10ms TTL=128
Reply from 127.0.0.1: bytes=32 time<10ms TTL=128

Ping statistics for 127.0.0.1:
     Packets: Sent = 4, Received = 4, Lost = 0 (0% loss)
Approximate round trip times in milli-seconds:
     Minimum = 0ms, Maximum = 0ms, Average = 0ms