This post documents how to configure AWS S3 and duplicity to do encrypted backups to the cloud.

This paper is really hard to come by and all scans are either incomplete or include the empty backpages. Here's a cleaned up version: Download

I use the following snippet to spellcheck latex files:

#!/bin/bash
hunspell -d en_GB -t $1

Put it into a spellcheck.sh file. Then ./spellcheck.sh myfile.tex.

ssh-agent can be used to unlock an ssh private key and therefore prevent having to enter the password multiple times. Usually your desktop environment does this for you. But if you're for example sshing into your workstation and then use ssh (e.g. for git or hg) your desktop environment …

This is just for me to look it up again later:

#!/usr/bin/env python3

"""
A small example that uses networkx and pyplot to create a DiGraph, 
draw it and compute floyd-warshall on it.
"""

import networkx as nx
import matplotlib.pyplot as plt

#https://www.debian.org/vote/2013/vote_001 …

Some nice music on youtube and soundcloud:

• Nujabes (Playlist) and Never ending Nujabes
• Nomak
• TheSoundYouNeed
• DJ Quads
• Don Diablo: Hexagon Radio

Assuming intellij has been installed to /opt/ here's how to create an application menu entry (on xubuntu). Create a file ~/.local/share/applications/intellij.desktop with the following content:

[Desktop Entry]
Version=1.0
Type=Application
Name=IntelliJ
Icon=/opt/jetbrains/idea/bin/idea.png
Exec=/opt/jetbrains/idea/bin …

I use VirtualBox for the rare cases when I need a Windows OS. The latest Win10 updates failed to install because there's not enough disk space. Apparently 30GB is not enough for a whole OS and office... ;-(

Luckily that's easy to fix:

• Shutdown the guest
• Make sure there are no …

I'm a fan of Netgear's R7000 hardware. Not so much of the software. Since I bought this router I was not able to get IPv6 working with my Fiber7 internet connection. The Netgear firmware does not support DHCPv6-PD which is what my provider requires. Anyway, not having IPv6 was not …

If your CUPS printers do not show up in the Firefox printing dialog (but they do for example in Google Chrome) you may be missing the following package: gtk3-print-backends. Installing this solved that very annoying problem for me.