Tech notes
Copying with rsync

February 17, 2020 • 3 min read • Technology

Copying with rsync

Why you should use rsync instead of cp when you copy large amounts of data over a less than perfect connection.
Free digital signing of documents under Linux - an impossibility?

December 1, 2019 • 5 min read • Technology

Free digital signing of documents under Linux - an impossibility?

The whole story started when I tried to sign a LibreOffice document.
PXE-booting from Netgate Pfsense SG-3100

November 15, 2019 • 3 min read • Technology

PXE-booting from Netgate Pfsense SG-3100

To install Linux without the need of a CD/DVD/USB-stick, I now use PXE-booting ("pixie"-booting) on our local home network.

August 6, 2019 • 1 min read • Technology

Nautilus (Ubuntu’s file manager) and bookmarks

In the very old days, Ubuntu's file manager's bookmarks were stored directly as an invisible file in the home folder ($HOME/.gtk-bookmarks).

August 2, 2019 • 1 min read • Technology

Mounting lvm2 manually

LVM2 is a technology that I need to deal with consciously infrequently enough to never remember its commands even though I use LVM2 daily (under the hood of my OS).

July 24, 2019 • 1 min read • Technology

How to enable passwordless logins to a server

1.
Ḿanuscript reviewing by annotating PDFs

June 28, 2019 • 4 min read • Technology

Ḿanuscript reviewing by annotating PDFs

Manuscripts for scientific peer-review are delivered as PDF files.

June 25, 2019 • 2 min read • Technology

Ubuntu 18.04 boot messages

After switching computers (but staying on the same version of Ubuntu), I copied my openvpn configuration (/etc/openvpn) to the new system.
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Biochemistry/Molecular biology researcher and teacher