Planet Debian
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Russell Coker: Links May 2026
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Dirk Eddelbuettel: RcppArmadillo 15.2.7-1 on CRAN: Micro Upstream Update
Armadillo is a powerful and expressive C++ template library for linear algebra and scientific computing. It aims towards a good balance between speed and ease of use, has a syntax deliberately close to Matlab, and is useful for algorithm development directly in C++, or quick conversion of research code into production environments. RcppArmadillo integrates this library with the R environment and language–and is widely used by
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Ravi Dwivedi: Budapest Travel
In September 2025, I attended the annual LibreOffice conference in Budapest, Hungary. This gave me an opportunity to explore the city, which I will cover in this post.
Let’s start with the currency. Although Hungary is a part of the European Union (EU), it doesn’t use the euro as its currency. Instead, it uses Hungarian forints (denoted by “Ft”). During my time in Hungary, 1 Indian rupee was equal to 4 Hungarian forints.
After reaching the Budapest airport, I bought a 15-day public transport pass. The public transport
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Russell Coker: Zswap
Zswap vs Zram
Last year I blogged about using Zram for VMs [1]. That setup is still working well for VMs and for phones and laptops with no swap device.
I have just read Chris Down’s insightful blog post about Zswap vs Zram [2] which convinced me to setup Zswap on some systems. I have had some of the problems that were described in his blog post when trying to run Zram on workstation and server systems.
One limitation of
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Jonathan Dowland: nvim-µwiki
In January 2025, as a pre-requisite for something else, I published a minimal neovim plugin called nvim-µwiki. It's essentially just the features from vimwiki that I regularly use, which is a small fraction them. I forgot to blog about it. I recently dusted it off and cleaned it up. You can find it here, along with a longer list of its features and how to configure it:
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Russ Allbery: Review: The Keeper of Magical Things
Review: The Keeper of Magical Things, by Julie Leong
Publisher: Ace Copyright: 2025 ISBN: 0-593-81593-9 Format: Kindle Pages: 353 The Keeper of Magical Things is a cozy fantasy novel. It is set in the same universe as The Teller of
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Vincent Bernat: Scaling Akvorado BMP RIB with sharding
To associate routing information—like AS paths or BGP communities—to flows, Akvorado can import routes through the BGP Monitoring Protocol (BMP). As the Internet routing table contains more than Russell Coker: Debian SE Linux and PinTheft
We have a new Linux exploit called PinTheft [1]. I did some tests of it with Debian kernel 6.12.74+deb13+1-amd64.
user_t
When I run the exploit as user_t I see the following in the audit log:
type=PROCTITLE msg=audit(1779615031.043:15540): proctitle="./exp" type=AVC msg=audit(1779615031.043:15541): avc: denied { create } for pid=1360 comm="exp" scontext=user_u:user_r:user_t:s0 tcontext=user_u:user_r:user_t:s0 tclass=rds_socket permissive=0 type=SYSCALL msg=audit(1779615031.043:15541):...Petter Reinholdtsen: Command line Norse God of Wind Hræsvelg move the clouds
A while back, I came across the AI Fabric system created by Daniel Miessler. I liked its approach of providing command-line tools for filtering text using artificial idiocy services, allowing stepwise operations to be applied to a piece of text. The output of one operation can then serve as the input for another—in other words, Unix pipeline processing powered by large language models. I do no longer remember exactly how I discovered it, but suspect it was via Matthew Berman's video "
Gunnar Wolf: How deep is your deceipt
I am a teacher. Since January 2013, I have been teaching the “Operating Systems” course at the Engineering Faculty of UNAM. And yes, that means May and November are highly stressful months, where I have to review the work done by my students and… sigh… come to the difficult decisions leading to a numerical score that will, in very very short, represent the 64 hours they spent listening to me talk and how they shaped their understanding, plus the countless (in the sense that I cannot count them 😉) hours they devote to fulfilling my
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