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Welcome!
You have come across the ZephyrSoft home page. Here you can download some tools I developed over the years and also actively take part in further development. I wrote these programs because there was no free solution, at least no satisfactory one. Some were created especially for Koinonia Fellowship in Hannover, Germany.
Mathis Dirksen-Thedens
And just in case you wondered what "Zephyr" stands for: it's Latin and means "westerly winds". I chose it as my code name (or brand name) long ago.
Heavy (Log) Rotation
Sometimes I am at the point where there's too much log output, but I don't want to send everything to /dev/null because of some rare bug. The easiest way I know to retain some fixed amount of logs is to use rotatelogs from Apache HTTPD - e.g. in the following fashion:
some_command 2>&1 | rotatelogs -n 5 /var/log/some_command.log 100M
Hope to help somebody with this (perhaps the future me)...
Use Canon CanoScan 9000F Mark II to digitize slides and prints on Linux
Some time ago I collected some boxes of slides from my parents and parents-in-law. The pictures were taken in the 70s and 80s and it would be a shame to disregard them, so I set out to create a workflow to digitize them. I bought a CanoScan 9000F Mark II because the Linux support is good - this piece of technology can scan with 4800 dpi which should be sufficient even for advanced use. I confined myself to 1200 dpi which gave me pictures of 1650 x 1080 pixels. The process took 35 seconds for 4 pictures (scanned in one go).
Read more: Use Canon CanoScan 9000F Mark II to digitize slides and prints on Linux