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On writing type size in its name
Since number type sizes are powers of 2, I propose to denote a number type of size 2**N by int${N}. int7 is much shorter than, say, int128. (The word int is not important here. Replace it with i, Word, or whatever you want.) -
Коренгал
Когда я в 2019 году переводил комедию про американского солдата, который стал наёмным убийцей, решил немного подковаться в этой области и прочитал статью и посмотрел фильм об американской операции в долине Коренгал в Афганистане. Статья оказалась более информативной ( Read more... ) -
планирование с помощью приоритетов
Встретился алгоритм планирования с помощью приоритетов, который автоматически назначает приоритеты. По-моему, это оксимирон ( Read more... ) -
the no free lunch theorem and the philosophy of deep learning
The no free lunch theorem has made it clear that there is no best machine learning algorithm, and, in particular, no best form of regularization. Instead we must choose a form of regularization that is well suited to the particular task we want to solve. The philosophy of deep learning in general and this book in particular is that a wide range of ( Read more... ) -
Setting up a network bridge between a QEMU VM and its host on the command line
Setting up a network bridge between a QEMU VM and its host on the command line
A user of ArchLinux can follow relevant parts of the wiki articles “QEMU” and “PCI passthrough via OVMF” for setting up other aspects of a QEMU VM, but these guides don't provide a short method suitable for people who are not network administrators and don't need ( Read more... ) -
Gparted corrupts F2FS partition
After I extended a partition containing F2FS with a recent version
of Gparted, the partition no longer mounts. mount reports an error, but fsck.f2fs does not see any problem (well, except for “Invalid CP CRC offset: 0”) and does not fix the file system. A strange behavior for a file system.
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cleaning kernel dumps from UEFI BIOS NVRAM
Trying to install Secure Boot certificates into UEFI BIOS NVRAM, I hit a problem that there is no free space left in the NVRAM. Most solutions recommend just to delete files starting with dump in the directory /sys/firmware/efi/efivars. A virtual filesystem exposing UEFI BIOS NVRAM variables is mounted to this directory. Indeed, these files ( Read more... ) -
Diceware
Diceware is a method of choosing a password (passphrase) that consists of several short words with good entropy. You can download a Diceware dictionary text file in different languages from the Diceware page. Here is the direct link to the English file.
This Python 3 program transforms a Diceware dictionary text file into 6 HTML pages. 6 pages are ( Read more... ) -
performance of cryptographic integrity checkers
In this article, I share performance results of cryptographic integrity checkers for full-disk encryption in Linux. Specifically, integrity checkers implemented by dm-crypt/dm-integrity. Integrity checking may be combined with encryption into one algorithm called “authenticated encryption”; these are measured too.
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system-wide PulseAudio and pacmd
If the PulseAudio daemon is executed in the system-wide mode, pacmd will not work even if started by root. Instead, it will work if it is started by user pulse with the environment variable XDG_RUNTIME_DIR assigned to /run/user/$UID. $UID is the UID of user pulse. Everything in one command for root:
sudo -u pulse -- env XDG_RUNTIME_DIR=/run/user/$ ( Read more... )