Projects

Idea While on a trip to Jutland, I had a splendid idea: a system to track loans—who I loaned money to and whether I ever got it back. It had to work on mobile devices and as a web app, so I built it as a small webpage. I used an MSSQL database (hosted by addnet.dk) and wrote the app in C#. Database I built a single main table, Finances, for all loans and edits. Each finance can have a parent—NULL indicates a root loan. This allows loan tracking and later edits. A root loan of +10 DKK, followed by a -10 DKK update, resolves to 0 (paid). ...

Introduction While reviewing my old college’s IT class backup system (due to running low on disk space), I discovered a major flaw: a weekly 1:1 backup of every user’s files—about 40 GB per week. Many of these files never change. Ever. Solution: Incremental backups. I challenged myself to code an incremental backup system using only Python and the Linux extfs filesystem. The Scenario At my former college, students ran the IT department. They set up a system with a 2 TB drive (two 1 TB disks) that made weekly full backups of every user, including alumni. ...