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git commit -a (or git commit --all) automatically stages files that have been modified.
Some of my repos now include git hooks that would be completely negated if my git commit command message auto-stages everything.
Authored by Damien Irving, Kate Hertweck, Luke Johnston, Joel Ostblom, Charlotte Wickham, and Greg Wilson.
I learned a lot, and you should come back to it for more, especially the chapter on building CLI tools with Python.
All their advice is sound, except I do not agree that the MIT license should be recommended (which the authors argue based on the observation that "The last thirty years have shown that this restriction [of the GPL] isn’t necessary" which I cannot understand).
The book is a thorough walk-through that is sure to get most anyone up and running creating research software with Python and is beneficial to any researcher or research student curious about the Python programming language and the shell.
- Green Solvent Selection Tool by the OPEG group at the Department of Physics at Umeå University. Written in Python. With publication and source code.
[I will add more dashboards here as I (re)-discover them].
Our world is built up of roads and cars to get us to our destination! But what about cycling and even walking? Have we been brainwashed to think that the car is always king?
Via Krister Isaksson's blog, also see masto thread (both in Swedish).
Another good video on the subject by Shifter.
Is there some tool(s) that can identify which Unicode character I am looking at? (Because it is not always possible to copy-paste...)
- https://shapecatcher.com (which reminds me of Detexify)
Bassam is a free Arab social network that allows you to join the Fediverse and escape from the dictatorial and oppressive social platform.
It runs on Rebased which is a a Fediverse backend written in Elixir, compatible with the Mastodon API.
I installed the Beeper Android app on my phone and gave it a try. You have to provide an email, fill in the confirmation code sent to it, and then you can choose a username (which will form your Matrix identity @username:beeper.com, although the app never tells you this).
Already at this point I'm starting to get disappointed - I can sort of understand hiding the complexity of Matrix instances from beginners, but no where in the app's preferences/settings could I find the full name of the Matrix account it created for me. Also, you never to get to set a password for the account you just created, meaning you can't use it from other Matrix clients.
The major problem for me is that the app does not let you connect any other Matrix accounts. I already have another Matrix account - the whole point of Beeper is to centralize your chats, so why can't I add it?
Maybe the self-hosted Beeper will let you add more than one Matrix account?
Links and notes
- https://www.beeper.com
- https://old.reddit.com/r/beeper/comments/16kwrrp/how_do_i_use_beeper_in_other_matrix_clients a post in this thread suggests you can request your password from support or something (sounds sketchy to me).
- https://blog.rayberger.org/migrating-matrix-accounts
Nick Buraglio and Brian E. Carpenter have released their comprehensive, continuously revised and edited resource on IPv6: A free and open source IPv6 textbook.
https://blog.apnic.net/2024/10/24/a-free-and-open-source-ipv6-textbook
The book's source is available on Github.
Other IPv6 tools
This is what the web is for.
Skip a few news cycles and read yourself.
Bra läsning för att påminna sig om solens, månens och planeternas rörelse på himlavalvet så som de upplevs från jorden.
Detta utbildningsprogram presenterar himlafenomenen som de ter sig för oss vanliga seende människor. Med ett i huvudsak geocentriskt perspektiv knyter det hela tiden an till vad läsarna direkt kan erfara.
With Python, you can just open a shell and quickly try out some code in a so-called REPL console. Guess what, you can do the same with Ansible. Browse your inventory, and even remote file systems in an interactive shell with
ansible-console.
If you have installed Ansible via pip you already have this nifty tool installed.
I have invested some effort into Keycloak, but still not learnt enough about it to manage more than a single-user scenario.
The Authentik licenses look a bit complicated, though?
Via https://old.reddit.com/r/selfhosted/comments/1eohsds/best_self_hosted_authentication_solution
Excellent page listing their feeds, and not only their published articles but also separate feeds for submissions and announcements.
Code shared on https://git.scipost.org, although many repos are sparse or have not been updated in years.
They also have their own Mastodon instance, with an account for each field.
All in all, very impressive work by what appears to be primarily Dutch academics.
First heard about it from 4 gravitons.
Thanks to git log -1 it is trivial to view the latest commit in a repo, and combined with find ... -exec ... we can easily do that for multiple repos at once (for example see my commits bash function).
Turns out doing the same for the earliest commit in each repo is not at all trivial. Here is my approach (it should be said up-front that it's not pretty). But I wanted to get a handle on when I started working on some repos, and this pulled out the data I needed without having to do it manually for each individual repo.
taha@asks2:/media/bay/taha/projects/ansible/pub/roles
$ find . -maxdepth 2 -name ".git" -exec sh -c "git -C {} --no-pager log --all --pretty=format:\"%cs %h%d %s [%cn]\" | tail -n1" \; -exec printf " %s\n" {} \; | sort -n
2021-03-14 02506d4 Initial commit [taha] ./texlive/.git
2021-03-14 14ddd9a Initial commit [taha] ./desktop-tools/.git
2021-03-14 2bfe5bc Initial commit [taha] ./R/.git
2021-03-15 0c2deda Initial commit [taha] ./calibre-web/.git
2021-04-02 7a2bdb2 Initial commit [taha] ./iriun-webcam/.git
2021-04-13 167ef2d First commit [taha@asks2] ./shaarli/.git
2021-05-28 ca70e06 Initial commit [taha] ./wallabag/.git
2021-06-09 3d4891e Initial commit [taha] ./lxd-server/.gitThe directory roles contains a bunch of git repos (and possibly also a few folders that are not repos, which we exclude from find with -name ".git". Then for each repo, we list all commits (across all branches) using a custom format but then, importantly, only showing the last one which is the earliest commit.
To be able to tail this git command (and not the entire find command) we need to put it inside sh -c ....
Then we use a second exec statement to append the current directory name (so we can orient ourselves in the output) and then sort the entirety on the output (which thanks to our custom git format lists the commit date in the first column). Note that piping strips the colour from the git output, so no need to set colours in our pretty-format.
- https://stackoverflow.com/questions/51376361/getting-commit-history-from-multiple-repositories-for-some-period
- https://stackoverflow.com/questions/5188914/how-to-show-the-first-commit-by-git-log (this approach with
git rev-list --max-parentsdid not work in my case, not sure why) - https://andrewrea.co.uk/posts/git-log-over-multiple-repos
- https://stackoverflow.com/questions/50882822/view-logs-of-multiple-git-repositories
- https://stackoverflow.com/questions/6712423/how-do-i-count-the-number-of-commits-made-in-to-all-repos-hosted-by-gitosis-on-m
- https://stackoverflow.com/questions/49388069/what-does-git-log-1-do
- https://stackoverflow.com/questions/307015/how-do-i-include-a-pipe-in-my-linux-find-exec-command
- https://stackoverflow.com/questions/1371261/get-current-directory-or-folder-name-without-the-full-path
The collection spans from digitized copies of eighteenth century journals through the latest Open Access conference proceedings and preprints crawled from the World Wide Web.
Month-by-month moonsighting reports from around the world.
- Signal app and protocol (end-to-end encrypted by default, but centralized server, no federation) - use it daily
- Matrix protocol (end-to-end encrypted, decentralized, federated, user gets to choose app to use) - finds it use, but can be slightly annoying when using multiple devices
- Delta Chat - please see notes below
- Simplex Chat - I haven't tested this
Matrix servers infinitely accumulate user data in the transport layer, namely encrypted messages and attachments as well as cleartext metadata about users and groups. A permanent metadata and room membership record may be ok, or even useful accountability-wise, for government officials but is not suitable for many people threatened by rising authoritarianism where “guilt by association” suffices for prosecution or worse. Operators of servers who can access all the social metadata about its users, and maybe even public messages, are becoming themselves a potential target for hacking or authoritarian repression.
Signal’s key architectural innovations were ephemeral message routing, usable E2EE with metadata-minimization where the transport server only stores messages temporarily and aims to know nothing about anything (except your phone number). Metadata-minimization is why Signal’s founder felt fine to entrust all “Signal Server” activities to Google, Amazon, Cloudflare, Microsoft, our very fine riders of the big tech apocalypse. A big step for cryptography in 2014 but a daring gamble, looking from 2025.
chatmail relays follow the Signal transport model and use SMTP and IMAP only for ephemeral message transport where the server keeps literally nothing except a (random) password and last login time. Turns out, if you hold those ancient protocols right, you can have a metadata-minimizing e-mail transport server with 0,001 EUR of costs per year per address.
https://lobste.rs/s/muk05v/reflections_on_matrix_criticism_over#c_1sijfo
Delta Chat
From the FAQ:
- Images, videos, files, voice messages etc. are handled as usual.
- For performance, images are optimized and sent at a smaller size by default, but you can send it as a “file” to preserve the original.
⚡️ Sign up to secure fast chatmail servers or use classic e-mail servers
- Chatmail relays Github repo - Chatmail relays are designed to be very cheap to run, and are automatically deployed and updated. Official list of relays.
- Besides the recommended usage of chatmail relays, you can use many classic email accounts in chatmail apps. List off email providers known to work with Chatmail.
- Chatmail core Github repo
List of clients is quite impressive, includes Android, iOS, a special "family-geared" Android client, a TUI client, and more.
Push notifications
Instant push notifications available for iOS and Android devices.
They seem to have put careful thought into how to handle notifications, especially on Android. By default, depends on Google FCM Push service or microG.
But you can change this to instead use a "background connection" or a "forced background connection".
Note that classic e-mail servers do not support Push Notifications for Delta Chat users.
Audio or video calls
Not really, at least not yet.
You can invite others to an audio/video chat, but it's essentially a Jitsi meeting (or whatever provider you choose). No ring tone on the other end, so you must have otherwise arranged the "call".
- https://delta.chat/en/help#how-can-i-use-audiovideo-calls-with-delta-chat
- https://support.delta.chat/t/i-made-a-video-call-app-with-15-second-ping
- https://github.com/WofWca/video-call-over-email
- https://github.com/WofWca/webxdc-video-call
webxdc apps
Watch out for insecure copy-cats
As far as I can tell these services, also named ChatMail, have nothing whatsoever to do with Delta Chat.
Delta Chat setup flow
I would like to test using the same profile on multiple devices.
So on device 1 (phone) I downloaded and installed the Delta Chat app from the F-Droid appstore. Opened the app and followed the instructions to create my profile. That was painless.
On my second device (tablet) I downloaded and installed the ArcaneChat app from F-Droid. Opened the app, clicked on "Add second device" on the welcome screen which starts the camera viewfinder. On my already registered device (phone), I opened the app, opened Settings, and clicked "Add Second Device". (Note! Don't make the mistake of clicking the QR code icon next to "Settings", because that will not work for adding secondary device, only for inviting others to a conversation).
ArcaneChat TUI client
I chose to create ~/.local/git/arcanechat, set it up for python using direnv echo "layout python3 > .envrc", then installed the client using pip:
$ pip install -U arcanechat-tui[full]This installs the arcanechat-tui binary, an alias arcanechat, as well as the deltachat-rpc-server in .direnv/python-3.10/bin/.
Next, how to configure the existing account?
- https://github.com/ArcaneChat/arcanechat-tui/issues/91 - Setup as second device
- https://github.com/ArcaneChat/arcanechat-tui/issues/96 - How to add account as second device?
Create a backup in ArcaneChat Android and transfer it to the computer.
$ arcanechat import <path-to-backup-tar>Worked flawlessly with a single profile in the first device.
Medfarm Play är en videoportal som skapats i samarbete mellan pedagoger och MedfarmDoIT.
Här kan du hitta tusetals undervisningsfilmer, många av dem indelade i ämnesspecifika kanaler.
Video recordings on many subjects from Uppsala University, such as Nobel lectures, doctoral conferment ceremonies, etc. Use the search function or browse the channels.
Let's say you are looking for old Ansible code dealing with multiple distros (meaning multiple files in the ./vars/ directory) to draw inspiration from. How can we quickly identify the roles with vars directories containing more than a single file?
$ cd /media/bay/taha/projects/ansible && find . -not -path "*/archived/*" -not -path "*/testing/*" -path "*/vars/*" -printf "%h\n" | sort | uniq -d && cd $OLDPWD
./pub/roles/apache/vars
./pub/roles/common-systools/vars
./pub/roles/desktop-environment/vars
./pub/roles/digikam/vars
./pub/roles/graphics-driver-nvidia/vars
./pub/roles/php/vars
./pub/roles/php-versions/vars
./pub/roles/python2/vars
./pub/roles/python3/vars
./pub/roles/R/vars
./pub/roles/sioyek-pdf/vars
./pub/roles/wallabag/varsAll of the returned paths indeed contain at least two files.
Note how we limited find to only directories named vars.