Running FreeDOS on Linux
Here’s how I boot FreeDOS on my Linux desktop machine using QEMU.
Why DOS only has 16 colors
Have you ever wondered why DOS text only comes in 16 colors and 8 background colors?
Running FreeDOS on legacy hardware
How I installed FreeDOS on a 386-SX micro laptop called the Pocket386.
Using ‘awk’ to filter text
Here’s how to use awk to strip out sample code from a Markdown file.
Digging into ODT file contents
All LibreOffice files are zip file containers with XML data and metadata.
Use ‘grep’ to solve a 2-dimensional word puzzle
Regular expressions match patterns and help you solve problems.
Comparing BASIC with FORTRAN 77
I applied what I learned about BASIC to learn the FORTRAN 77 programming language.
A little programming goes a long way
It helps to know some programming to solve these little problems.
My open source story
How I got started in open source, from GNU Emacs and installing Linux in 1993.
My first programming language
Apple BASIC was how I first learned how to write my own computer programs.
3 ways to read files in C
There’s the simple way, and there’s the fast way. Let’s compare.
Using ‘grep’ to play a word game
You can use regular expressions to match letters and patterns, to help you play a letter game.
MS-DOS 4.00 released as open source software
Why it’s important that Microsoft released this old version of MS-DOS.
Writing your own ‘fmt’ program
Learn a little programming to write tools that do things the way you want to do them.
Learn Bash by writing a number guessing game
Learning a new programming language can be a fun exercise.