One liner multi-image cropping
A simple entry for a simple way to solve a common problem.I often have a lot of scanned images, documents usually, that have unnecessary white-space, and other artifacts around the edges due to limitations in the scanner software or issues with the scanner itself. Normally I use the gimp, and can correct orientation problems, colour issues and cropping very easily. But this is too much mouse work in my opinion when you have 50 images and all need a similar simple cropping. So I fiddled around in the shell a little and came up with this one-liner:for file in *.jpg ; do echo "Cropping $file" ; \convert -trim $file trim/$file ; \

Complexity threshold
I've been planning to write a proper article about this for years, but inspired today by Dan Pink's excellent presentation on the surprising science of motivation, I thought I'd write a mini-version of this, as an introduction and a reminder to myself to write the real one.Back in 2006 I wrote a blog titled 'The perception of control', dealing with uninformed decision making and the illusion of efficiency, commonly found in control-based companies.