gavinj.net

macro_20070509_2 Originally uploaded by gavin.jackson. My new lens arrived yesterday (actually it's yet another old Minolta AF lens manufactured back in 1985) - it's a 35-70/F4 (constant aperture) wi...

File magic is used on Linux and Unix systems as a binary "fingerprint" to tell what type a file actually is - this provides a much better result than MIME or filename extensions. The "magic" pattern i...

Starting from Mysql 5.0.2, mysql now supports triggers - which can be quite handy. I'm using them to automatically create new (derived) table records when a user submits data to my web app. Syntax is...

Python provides a pretty handy module for performin MD5 sums of both text and data buffers. The following function provides an MD5 sum given a file name: def get_hash(self, filename): """ Generates an...

Dan at work put me on to some new Linux Kernel functionality in the form of inotify - the userland tools and libraries allow you to hook into this pretty handy capability. It essentially allows you to...