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Erik Winter A Dutch sotware developer who likes open source, literature, music and a bunch of other things.
  • Simple Log File Analysis for Your Kubernetes Pods on the Command Line

    January 23, 2021

    Recently at my current job there was a lot of complaining about how terribly slow our instance of Kibana was. We use that, as many teams do, to view and analyse the log files generated by the services that run on our Kubernetes cluster. The root cause was that the logs were simply too large, because...

  • Wait-for Script

    April 17, 2020

    Docker-compose has the option of making a container depend on another container, so it will not start the former before the latter is running. This is useful for containers with applications that need other infrastructure, for instance a database, present. The common problem with this is that...

  • Basic Pomodoro Timer in Bash with Termdown and wmctrl

    March 22, 2020

    Like many other systems that aim to add some structure in the chaos of todo-items that we all struggle with, the Pomodoro Technique has some good parts and ideas, but one must be careful not to drive it to far. Neither by forcing every life problem in the system (if all you have is hammer...), nor by...

  • Converting Timezones on the Command line

    January 14, 2020

    Convert from a foreign zone to the local zone...

  • Shared Environment Variables for Make, Bash and Docker

    January 7, 2020

    It is possible to define a set of variables and share them in Make, Bash and the Docker containers that are orchestrated by docker-compose ....

  • Job Control in Bash Scripts

    January 6, 2020

    One should be careful when considering an option like this. Sending processes to the background in a script, are you sure this is what you want?...