USB Booting System for Clonezilla SE, Diskless PC

(This article is good, but somewhat obsolete. I'm now doing something slightly different.)

This mini project took a USB hard drive, made it bootable, and then used it as a disk cloning network. It's worked very well.

MS Access: VBA CRC32 Function

Here's a CRC32 function based on the work at: cCRC32.

The main difference is that this is a function, and the crc32 table is not recalculated each time. If there's a way to do constant arrays, I'd like to know. I haven't found anything online.

Function CRC32(str As String)
    Dim crc32Table(256) As Long
    crc32Table(0) = 0
    crc32Table(1) = 1996959894
    crc32Table(2) = -301047508
    crc32Table(3) = -1727442502
    crc32Table(4) = 124634137

MS Access: Showing "Continue..." Conditionally at the bottom of a Section in a Report

Maybe I'm missing something - but it looks like Access doesn't have this feature - to put "Continued..." or "More..." at the bottom of a section if the next section is on the next page. If it exists, please comment or email me at johnk@ the domain name of this site. I seriously hope it exists.

I have this complex report that is a little non-standard - and here's how I did it. The general technique is at this other post:
Printing a Repeated Section Message like "Continued"

Information Technology Workers: an IT Labor Union?

If you have reached this page through a search engine, and are interested in IT organizations, please check out Bright Future Jobs. Their URL is

This is a short list of links to groups that organize or try to organize programmer labor unions and other computer-based worker unions, as well as lobby organizations. This document is undergoing constant revision.

Page News
I just found out about CyberUnions a podcast and community about FOSS and labor.

PHP DOM to Implement a Form Class with Pure HTML Templates

So, I had this painful gout attack today and was mostly bedridden. It sucked. But I got some reading done, which was nice. My mind wandered and came up with this idea (and a headache).

Managing and Displaying External Links in WordPress

I've been having a helluva time figuring out how to manage and display a list of links in WordPress. The program has a links feature, but it's aimed at managing the list of links in the sidebar.

Saved by an Old System (Disaster Recovery Story and Case Study)

I had an email spam filter machine (which also did other things). When we got new computers, I figured on replacing the machine. What we did was, basically, copy most of the configuration from the old system to the new system. It wasn't identical, but very close.

Roff, Groff, and the Roots of Computer Typesetting

Today we take it for granted that computers can set type, but from the 60s to the 80s, most computers used either teletypes or character-based screens. The Xerox Star and Apple Lisa and Apple Macs, and PostScript changed this, but before them, typesetting was done using weird command languages that would send pages to special typesetters. The most well known setup was troff, which lives on in groff and in Solaris. The troff system used a computer typesetter called a CAT, and it wasn't a bitmap laser printer. It has these fonts that were spools of film that were photographs of letters. The font sizes were created by projecting the image of the letter onto the page at different sizes. I believe the rest of the process was like a photocopier - the toner goes on, and then is transferred to the paper, and fused.

Does software get old and wear out?

This isn't addressed to anyone in particular, but it's a common question: does software get old and wear out. They ask because their computers have gotten slower, or features have stopped working.

An Idea for More Memorable Identicons

Identicons are those odd graphics you see next to peoples' names in comments.

Comparison Shopping for Toilet Paper, in multiple computer languages.

It's hard to concentrate when you're tired and cranky, so I wasted some time writing a simple calculator in several different languages.

MS Outlook: Dumping MIME EML Email Files for Spamassassin Training

Here's a VBA script that I'm using to train Spamassassin from Outlook. It saves out email messages to a file server where messages are used to train the filter. The problem here is that Outlook doesn't save EML (MIME format) files. You can save messages as text, but lately, spammers have been loading messages with a lot of chaff text that looks like regular email. You can't train with that, because it might cause the filter to start mis-identifying legit email as spam.

Hauppage WinTV-1600 on Linux

I bought this several months back, and finally installed it on the Linux box. It works, sort of. ATSC (HDTV terrestrial broadcast) works fine. FM Radio does not. More info:

MS Outlook: Mass Email VBA Script

This is an outline I'm going to use to fix up a mass email script for Outlook that I'm working on. It was kinda elegant and explains how to do some cooperative multitasking with Visual Basic for Applications.

As you might imagine, there are a lot of mass email tools for Outlook. See Mass Mail Tools for Outlook, but this first version had some special needs (it was a huge list), and the second one I'd like to give to others, so a simplified, stripped down tool is best.

MS Access: Comparing Queries Between Two Databases (a query diff)

Often, when you have MS Access in a small office, and have done the right thing and split the database into a backend of tables and frontend of queries, reports, and forms, you end up with changes to the objects in multiple files. The trickiest is comparing queries, because the query object is modified if even a column width is changed. You need to dig deeper and compare queries.

Syndicate content