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The initial mechanics are pretty okay. We need to:

1. Initialize the LRUCache with a capacity (which needs to be always positive)
2. Have a way to retrieve the value of a key – this is a hint for using a hashmap, so we want to use a map as the backend data structure here. Return -1 if not found.
3. putting a new key is interesting. We need to: 3.1. Update the key if it exists 3.2. Add the key/value pair to the cache.

However, in order to add the key/value to the cache, we need to:

retpolanne

%pre --erroronfail
autopart --type=btrfs --hibernation
%end

%pre-install --erroronfail
eula --agreed
bootloader --sdboot --location=partition
network --device=wlp1s0 --essid "Wired_5G" --hostname "duke.local" --wpakey dummy
%end

retpolanne

Apple Books export

Apple does something weird with .epubs that you add to Apple Books. Here's how to recover them back after you import them.

Where do your books live

Your books reside here, but they aren't actually epubs.

~/Library/Mobile\ Documents/iCloud\~com\~apple\~iBooks/Documents

retpolanne

#!/bin/bash
# Ref https://docs.kernel.org/admin-guide/binfmt-misc.html
# enabled
# interpreter /usr/bin/qemu-x86_64
# flags: POCF
# offset 0
# magic 7f454c4602010100000000000000000002003e00
# mask fffffffffffefe00fffffffffffffffffeffffff
# :name:type:offset:magic:mask:interpreter:flags
BINFMT=":qemu-x86_64:M::\x7fELF\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x3e\x00:\xff\xff\xff\xff\xff\xfe\xfe\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff:/usr/bin/qemu-x86_64:POCF"

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#!/usr/bin/env sh

# Usage
# ./gen-dot-llm.sh filename.java Function

temp_jpg=$(mktemp)
full_prompt=$(mktemp)

prompt="generate a control-flow graph from the following code in dot language.
Consider only the function $2. Output only the raw dot code without any other words.

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#!/bin/bash

pbpaste -Prefer public.html \
    | xmllint --html -  \
    | perl -pe 's/background-color:.*?;//g' \
    | perl -pe 's/background:.*?;//g' \
    | textutil -format html -stdin -convert rtf -stdout \
    | pbcopy -Prefer public.rtf

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Chosen project

perf - Scalability and speed

Verbatim:

complexity: intermediate or hard

duration: small, medium or large

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bash > /proc/`pidof agetty`/fd/0
clear
echo -e '\033[?17;0;0c' > /dev/tty1
dd if=/dev/zero count=1000 bs=1024 > /dev/tty1

gst-play-1.0 --videosink "fbdevsink device=/dev/fb0" layer1.mp4

gst-launch-1.0 videotestsrc ! video/x-raw,width=640,height=480 ! fbdevsink audiotestsrc ! audioconvert ! autoaudiosink

gst-launch-1.0 filesrc location=/home/root/layer1.mp4 ! decodebin name=dec ! videoconvert ! fbdevsink dec. ! audioconvert ! audioresample ! autoaudiosink

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docker run -d --rm --network=host bluenviron/mediamtx:latest

ffmpeg -re -f lavfi -i "smptebars=rate=30:size=320x240" \
-f lavfi -i "sine=frequency=1000:sample_rate=48000" \
-vf drawtext="text='YOUR MESSAGE:timecode=01\:00\:00\:00':rate=30:x=(w-tw)/2:y=(h-lh)/2:fontsize=12:fontcolor=white:box=1:boxcolor=black" \
-f flv -c:v h264 -profile:v baseline -pix_fmt yuv420p -preset ultrafast -tune zerolatency -crf 28 -g 60 -c:a aac "rtmp://localhost:1935/mystream"

vlc --network-caching=50 rtmp://localhost:1935/mystream

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GDB using Docker and Colima

You need to create a privileged container, with SYS_PTRACE capabilities and host PID, so you can access all the PIDs in the host (in my case, Colima VM).

docker run --privileged --cap-add=SYS_PTRACE --pid=host --name gdb-docker -it ubuntu:latest bash

Within the container: