Random thoughts that do not fit in long term thoughts, ricette, presentations or reads…

June 12, 2022

Back to Django IT

Un gruppo di ricerca usava Microsoft Access per creare dei Database, e stava pensando alle proprie opzioni. Queste sono alcune note di quello che gli ho detto, in quanto può essere rilevante ache per altri. Sono tornato a Django, che avevo già usato per mupris.net, e sono giunto alla conclusione che probabilmente è la soluzione migliore per loro. Note generali Database relazionale: la cosa più importante è definire lo schema. Quello si può fare discutendo ad alto livello su cosa si vuole registrare, e poi definendo le tabelle e i campi.

April 3, 2021

How do Algorithms become biased?

Recently, via kottke I came across a interesting Youtube video: Are We Automating Racism. It takes a look to racism in algorithms, a topic dear to me, and a nice introduction to some of the issues, especially for people outside the field.

November 1, 2020

Hey 1Password

After quite some delay I started to use hey.com, as my email. It immediately looked like an approach I would like: the imbox for important emails, the feed for info you want to see at your own pace, the paper trail for the receipts just sounds natural to me, and indeed I do like it. What I don’t like is that I cannot use my kitabi.eu address. I understand why:

October 25, 2020

My Backup script

Nothing like vacation to do and go back to my backup routine and improve it a bit. I mainly put everything in a script, added the the status and scrub of the backup_freenas_rsync script by K. Raquel Sanborn. In the script I do not try to handle all contingencies, simply to be careful, and bail out with a helpful error message if things are strange, assuming that then manual intervention will be required.

February 5, 2020

My Backup settings

My Freenas setup Having a good network storage to share the files one has at home is a very useful thing. I have used for several years freenas, it is free, open source, built on the top of open zfs arguably one of the first new generation files systems with lots of nice enterprise features: snapshots, checksums for everything, growable volumes, configurable redundancy… It might be a bit more work, configuration than ready made solutions like synology, but it works well.

January 27, 2020

Comments revisited..

Why? I think that an important part of keeping the nice things of the internet, is to have small free spaces, and avoid bringing everything under the control of a few corporations. That is also one of the reasons that I started my blog again, and I take care of the technical part myself. Having a static site is about using simple future proof technologies so that it can be kept around with little effort, and migrate to various hosting options.

December 22, 2019

Meta Info Tools

The meta info was at the hearth of the NOMAD Archive, as a way to make the data available. The NOMAD meta info is an extensible language independent and format agnostic description of atomistic simulation data. Recently I rewrote the tools to manage the meta info in python 3, improved them and generally tried to take advantage of the lesson learned. pip install meta_into_tools python -m meta_info_tools.meta_tools --help See the meta info page for more details.

November 20, 2019

Directory compare

Note to self Quick directory compare: rsync -rlDnv --delete <inDir>/ <outDir> # using timestamps rsync -rlDunv --delete <inDir>/ <outDir> # skip newer files in outDir rsync -rlDInv --delete <inDir>/ <outDir> # ignoring timestamps (size only) rsync -rlDcnv --delete <inDir>/ <outDir> # using checksum with -a instead of -rlD checks also owner, group and permissions do not forget the trailing slash to refer to its content.

November 20, 2019

Mosh cleanup

Note to self I use the excellent mosh to work remotely from my ipad (together with blink). Sometime despite all, the connection is lost and cannot be recovered. source cleanupMosh.sh ``` that contains ```bash pgrep mosh-server | grep -v $(ps -o ppid --no-headers $$) | xargs kill ``` deletes all mosh sessions excluding the current one... (it uses the parent pid, so it has to be executed in the main shell)

October 23, 2019

Looking for a Job

After NOMAD and a well deserved break (the first one since I finished my Diploma), just after our holidays in Greece I am starting again to look for a job. If you know any exciting openings, or places where I should apply, please let me know…