Disclaimer: This is very much alpha software ( is there a letter
before alpha ?) Use at your own risk.
- debruijn 1.0
A command line application for generating DeBruijn strings by various
algorithms. Should build on a unix platform, or as a console application
under windows. (.tgz archive)
Software ports for Minix.
I have ported a number of popular Gnu and other software packages to the
32 bit version of Minix 2.0 running on Intel platforms.
a text-mode filesystem browser. OK, maybe it's not going to put Bill Gates out
of business, but I think it's kind of nifty, and the price is right. This
version comes with a prebuilt executable for Minix, but it should build on
any Un*x system with curses. (It looks a lot prettier if you have ncurses or
compatible library.) Where do you want to go today? (45K .tar.Z file)
Zip archive containing assembler and C source code for an MSDOS program
that installs a tsr that does nothing. That's right: nothing. It just takes
up a desired amount of space at a desired part of memory until you ask it to uninstall itself.
This was a useful debugging tool for me in helping to understand MSDOS
memory management. (Camp will camp out on UMB's if available too.) It could
be a useful starting point for any installable/uninstallable TSR. This
is version 2.0. Version 1.0 is available
Another extreme "niche" product. I have a dos emulator for Android called dosbox that emulates dos 5.0, and
I missed my dos 6 config.sys menu. This program allows you to "fake" a dos 6
config.sys in dos 5 or earlier. (It could also be used as a starting point
for a menu-based program that parses a tag-based source file.)
For unix: a tool to help upload files inside a terminal session in conjunction
with script(1). Cuts uuencoded sections out of typescript file produced
by script. Included shell script named reap automates the process further,
and can be thought of as a "poor man's Kermit." Includes implementations
of auxiliary programs uuencode and dos2unix, and man page for harvest.
- turing 1.3
a compiler and simulator of turing machine programs. Turing machine programs
can be written in a simple language that supports macros with arguments,
conditional expressions, and a number of other convenient directives. After
compilation is complete, one can optionally simulate the resulting machine.
By default, the program reports a snapshot of the tape contents in the
vicinity of the read head after each cycle, but
other types of display are possible. There are many included turing programs,
including machines for multiplication, addition, and other arithmetic
functions, as well as an implementation of a universal turing machine.
(Source code. 75K tgz file.)
- Thue 1.0
a command line program for generating prefixes of the Thue-Morse sequence and related things.
- tableau 1.0
(very much alpha)
A tool for analyzing wffs (well-formed formulas) of propositional logic.
Allows you to enter a formula at the command line and create either a
truth table or analytic tableau. To get an idea of what it can do, try
this online version
a set of utilities for DOS that can be used to copy files from Minix
hard-drive partitions or floppies. These are 16 bit programs and will also
run in a DOS box under windows.
- Utility to
Boot a Hardrive Partition from DOS.
This utility, originally written by Claudio Tantignone to allow the user to
boot Minix from the DOS 6.xx config.sys menu, has been modified to allow
the user to boot any harddrive partition (active or not) or floppy drive from
the DOS command line. It uses some elements incorporated from the program
Loadlin by Hans Lerman. The package, called mloader.zip, includes all source
code and documentation.
- ext2tools ,
a set of utilities for Minix that allow files to copied from a Linux
ext2 filesystem. This is a port of the suite for MS-DOS written by Claus Tondering. Includes executables, source code, and documentation (82K).
- Crypto ,
source code for
a suite of programs for Unix that implement encryption methods of historical
interest. The programs are designed to work as much as possible like the
standard Unix program crypt. Includes examples of both substitution and
transposition ciphers, including the caesar, vigenere, beaufort, playfair,
enigma, and others. These programs are intended for educational use only:
not provide sufficient security to be used for serious encryption. Version
TruthTable, a java application with supporting classes for creating truth
tables from well-formed formulas in propositional calculus. Unarchive
in a directory on your CLASSPATH. Then say "java TruthTable" and do the
obvious. (Includes documentation comments suitable for javadoc.) (12K jar
Translates text files into morse code which can be played on the PC's
speakers. Includes source code, makefiles, and a prebuilt executable for
16 bit DOS running on a 386 or better. Version 1.0. (54K)
Deadlin: A clone of
Yes, folks, this is what the world has been waiting for. A program that
behaves as much as possible like the (in)famous MS-DOS line editor, yet
will compile and run on any Unix system. Think of this as my contribution
to software preservation. (Version 0.04, 2017)
code for some simple examples and utilities.
Pacer: a pacing calculator for runners.
Set distances and target times on sliders and read out split times
for various distances. Or set desired split times and read out
total time. (Doesn't do the running for you, though. )
- Winvenn: a
venn diagram demo
program for Windows 95.
Allows students to explore set notation with venn diagrams by interactively
shading a venn diagram with the mouse.
Shell, a shell for DOS/Windows with syntax loosely based upon the Bourne shell.
Includes executable, source code, and documentation. Both 16 and 32 bit
DOS versions are provided, as well as a version for Win32. The latest
version supports running shells in multiple console windows with IPC
commands for parallel programming amongst shells, as well as history
list, command completion, and command line editing. A demo program which
solves the "Dining Philosophers problem" is included.
a clone of the DOS dir command with source code. Many example shell
scripts are included. Version 2.2 (1.5 Mbytes).
Alarm: installs a TSR which will set off an alarm after a given time.(50K)
This is a DOS program which uses the PC's timer to set an alarm up
to 234 hours in the future, and to specify a message which will be
printed to the screen at alarm time. The bell is also sounded at alarm
time. This can be useful as a reminder to clean up and disconnect from
a limited time connection. Includes an uninstall option.
Version 1.2. Includes C and assembly source code.
Self-extracting archive which installs a scoring program for our
noontime running league. See my
running page for more information
on the noontime running league and for the latest data files needed
by this program. (150K)
Copy scrdist into a directory of its own and then say scrdist at the
DOS prompt. This will extract the scoring program called score.exe and
all of its auxiliary files. If you run score as is, it will score the
1995 season. The program is menu driven, and should be
self-explanatory. Use the /help or /? option for a brief usage
mkbfd: Make a bootable Linux floppy (13K Linux)
This shell script, written jointly with Vince Fatica, automates the
process of creating a stand-alone bootable floppy disc for linux. Everybody
should have a couple of these around for emergencies or risky
experiments. (This is now quite dated, but may be useful as a guide
for those interested in creating their own standalone floppies.)
print_screen: Allows you to set up your print screen key in Linux so
that it works much the same way it does in DOS.
gui: C/C++ source for a DOS user interface.
This is boiler plate code for a pretty standard document-view user interface
with menuing, dialog boxes, and an editable main window. It runs under DOS and
can be built with BORLAND C/C++ 4.5. It is basically a minimally featured
full-screen editor with obvious places to put hooks to your own back-end
code. The file menu is fully operational. Includes executable, source code,
README, man page, and makefile. (54K zip file).
cc: Poor Man's C-compiler front-end.
This is a Bourne shell script c-compiler driver. Comes with man page.
Recognizes all the usual options.
truename: Unix utility. Give the true name of a symbolic link.
C source code for a utility which reports the pathname at the end of
a chain of symbolic links. Also cleans up ./ and ../ constructions in
path. Includes makefile and man page.
Markov chain random text generating program.
Produces a sequence of random
characters with the distribution of each character depending on the most
recent 4 characters. The distribution is based upon an analysis of a sample
text. (The default is /usr/dict/words, but any sample text can be used.)
Inspired by the article, W.R. Bennett, Jr.,
"How Artificial is Intelligence?", Amer. Scientist,
65(1977), 694-702. Source code. Should build on any
unix system. Run a cgi demo
You can also
run a cgi script
that will calculate the relative frequency of occurence of a given string
of letters in /usr/dict/words. This will show, e.g., that the letter e
occurs in English about 11% of the time.