Jan's weblog

• Mypy on steroids
  Configuring mypy as a daemon for snappy type checking.
  python hacks performance

  
  
• Sane alt-tabbing in Ubuntu - part II
  Changing alt-tabbing in Ubuntu to let you actually see what you're selecting.
  linux hacks

  
  
• Git commit a permission bit
  How to commit a change in file permission bits in git.
  git linux

  
  
• Time for coffee
  How to set the time on an Ariete coffee machine.
  coffee time

  
  
• Venving like a pro
  Automating Python virtual environment switching and setup in the linux command shell.
  bash python

  
  
• Don't commit to main
  Prevent accidental commits to a protected branch such as main.
  git hacks

  
  
• Security headers for lighttpd
  How to configure your lighttpd website to have safe headers.
  lighttpd security

  
  
• Webroach - xroach for webpages
  The story of webroach, how I created the HTML counterpart of the xroach linux application. It is open source, so you too can have some roaches roaming your website.
  hacks html linux cockroaches

  
  
• Restaurants in Berlin
  A list of tasty restaurants in Berlin including their location and type of cuisine.
  berlin restaurants

  
  
• Open GitHub when pushing a new branch
  A trick to quickly create a pull request when pushing a new branch to remote by opening the repo in your browser.
  git hacks

  
  
• Non-art museums in Berlin
  A list of non-art museums in Berlin I can recommend to visit. Short description, price, and location for each museum.
  berlin museums

  
  
• Fighting html form bots
  A tale of fighting spam bots abusing my contact form. A series of experiments led to a simple solution to stop the bots.
  blogging hacks bots

  
  
• Art museums in Berlin
  A list of art museums in Berlin I can recommend to visit. Short description, price, and location for each museum.
  berlin museums

  
  
• Scanning with a samsung 4600 in ubuntu
  How to let Ubuntu recognize a Samsung SCX-4600 as a scanning device.
  hacks linux scanner

  
  
• UX by the numbers
  A write-up about a scientific approach to UX decisions.
  ux programming

  
  
• Adding elastic site search
  My experiences trying out elastic site search on my blog.
  blogging search

  
  
• Removing a div with Greasemonkey
  How to remove an unwanted HTML element from a webpage using Greasemonkey.
  html hacks

  
  
• How to include code in your web page
  Short howto on presenting code snippets in an HTML page.
  html css

  
  
• Sending mail from a contact form
  How I set up my contact form to send emails in a way that does not reveal my email address to the world.
  hacks blogging java lighttpd

  
  
• Resizing images on the command line
  How to quickly resize an image on the linux command line using convert/ImageMagick.
  hacks images

  
  
• TODO, or not TODO
  Rant about the uselessness of todo comments in source code.
  programming

  
  
• Sane alt-tabbing in Ubuntu - part I
  How to change alt-tabbing behavior in Ubuntu to something more useful than the default.
  linux hacks

  
  
• What's in a name? Or how to validate a name field in Java.
  How to do basic validation of a name in Java.
  programming java