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    • ncdu — Give me an overview of what wastes my storage

  • 30.10.2021
    • arch-linux linux storage …
  • I ran a rather decent monitoring system for my servers at home based on prometheus. My monitoring service sends an alert, if some file systems start filling up. Unfortunately, in most cases, I don’t know, what file(s) cause this mess. I use ncdu to find the largest files in the alerted filesystem. This short article shows how to install and use this small helper.

    Read on…

    • Build alpine packages in a temporary container updated

  • 24.10.2021 25.10.2021
    • alpine-linux aports build-environment …
  • Some time ago, I started to set up the “Network UPS Tools” (NUT) for my uninterruptible power supply (UPS) “Eaton 3S”. It’s a UPS which can be connected to a computer via USB cable.

    I found a NUT-package in the “testing”-repository of “Alpine Linux”. Unfortunately, I was unable to create a working setup using this package. After some research, I found the reason for my problems: A missing dependency to the hidapi-package. I wanted to submit a merge request to get around the problem permanently.

    Read on…

    • Monitor a USB-connected uninterruptible power supply with "Alpine Linux" updated

  • 02.10.2021 25.10.2021
    • alpine-linux device hid …
  • I bought an “Eaton 3S” uninterruptible power supply (UPS) some time ago. It is supposed to support my servers with power in case of a power loss. I also wanted to get notified about those “power down” events, so I looked for an open-source software to monitor the UPS hardware. I found the “Network UPS Tools” (NUT). In this article, I describe some of the pitfalls I came across.

    Read on…

    • Go Developer, Go – Bootstrapping "Go" for multiple operating systems and architectures

  • 29.07.2017
    • bootstrap compiler cross-compiler …
  • One of “Go”’s strengths is its capability to build your “Go” project cross-platform for all kinds of operating systems and architectures, e. g. windows/amd64 (Windows), linux/386 (Linux), darwin/amd64 (MacOS). But setting up the environment for this is not that easy. This article is a small “HOWTO” listing all the steps required to set up a cross-platform “Go” environment.

    Read on…

    • Break it Baby, break it – How the network sniffer "Wireshark" can break Rubygems

  • 05.11.2015
    • linux ruby rubygems …
  • Occasionally I get some really weird errors when I try to install gems using gem or bundler. It took me some time to find out the reason for this. Read on if you’d like to hear the full story.

    Read on…

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