Technical notes, my online memory

My JSON testing fixture for django was bad, and django gave a really unhelpful error: ValueError: No JSON object could be decoded A line num...

I've used some pretty ordinary public transport websites. To do something about the problem, I recently embarked on a mission to create...

I want to use ssh forced command to limit a backup user to just running rsync. The idea is to allow backups to be deposited without grantin...

This has annoyed me for some time now. The http_proxy environment variable in Ubuntu overrides the APT proxy settings, despite this apparen...

Here is a handy command to copy a disk image (such as a VM) across the network compressed. We also do a SHA1 hash to make sure it copied co...

While the Django doco is pretty good, it is a bit light-on for user profiles . User profiles are for when you want to extend the informatio...

I always forget how to do time offsets (i.e. current time - 20 seconds) in python. Here's how: from datetime import datetime,timedelta ...