Jim Hall

5850 points

Minnesota

Jim Hall is an open source software advocate and developer, best known for usability testing in GNOME and as the founder + project coordinator of FreeDOS. At work, Jim is CEO of Hallmentum, an IT executive consulting company that provides hands-on IT Leadership training, workshops, and coaching.

Open Sourcerer People's Choice Award People's Choice Award 2018 Author Linux Contributor Club

Authored Content

Position text on your screen in Linux with ncurses

Use ncurses in Linux to place text at specific locations on the screen and enable more user-friendly interfaces.

7 open source Android apps for chess players

Write a chess game using bit-fields and masks

Using bit-fields and masks is a common method to combine data without using structures.

Why and how to handle exceptions in Python Flask

Short option parsing using getopt in C

Use the command line to make your programs more flexible by allowing users to tell them what to do.

A brief history of FreeDOS

Throughout its nearly 30-year journey, FreeDOS has been the modern DOS.

How to archive files on FreeDOS

There's a version of tar on FreeDOS, but the de facto standard archiver on DOS is Zip and Unzip.

How to program in C on FreeDOS

Programming in C on FreeDOS is very similar to C programming on Linux.

Authored Comments

Jim Hall

18 Apr 2021

Play a fun math game with Linux commands

Excellent - well done! I really enjoy the Numbers game. I have the Linux commands in a script so I can play Numbers whenever I have some down time. Here are a few plays:

Numbers: 25 100 10 2 9 8
Target: 795

8 x 100 = 800
10 / 2 = 5
800 - 5 = 795

Numbers: 25 75 7 6 3 10
Target: 225

25 x 10 = 250
75 / 3 = 25
250 - 25 = 225

Numbers: 100 75 3 4 5 2
Target: 707

3 + 4 = 7
7 x 100 = 700
5 + 2 = 7
7 + 700 = 707

Jim Hall

18 Apr 2021

Play a fun math game with Linux commands

That sounds like a great article idea - you should write this! I encourage you to contact the editors at https://opensource.com/contact to propose your article.