Why RSS

• Install RSS Reader of your choice
  • E.g. Android - search on fdroid
  • If you have Nextcloud instance - install Nextcloud News, it will be synchronizid with your Nextcloud account on multiple devices
• Find RSS feed
  • Install Extension RSSHub Radar - It will show if site have RSS
    For example, for public telegram channels - https://rsshub.app/telegram/channel/TGCHANNEL_NAME
  • If extension doesn’t show link, try find by yourself,
    E.g. Reddit - https://www.reddit.com/r/SUBREDDIT_NAME/top.rss?t=week
• Subscribe to RSS/Atom feeds of your choice and be happy

Alright, here we are, in a digitalized world where site X have its own app that you should install to have good expirience using that site.

E.g. Reddit spamming annoying pop-ups if you don’t have its app or account. Why should I care about their accounts or apps if all I want to read relevant information that I search or want to read?!

Well, that’s quite the point of RSS/Atom. You don’t need to have any accouny or vendor app to read news/posts from that site. The only problem is that site should have RSS support.

# Who is data hoarder?

Data hoarder archive large amounts of digital data (terrabytes) that might otherwise be lost, such as old video games, videos and websites.

wget \
     --recursive \
     --level=inf \
     --no-clobber \
     --page-requisites \
     --adjust-extension \
     --span-hosts \
     --user-agent=Mozilla \
     --convert-links \
     --no-parent \
     -e robots=off \
     --domains blog.ca.sual.in \
       https://blog.ca.sual.in/

It will download my site. You can download specific subdirectory.

You may want to decrease --level - its’ depth for subdirectories download.
--domains - limits to specific domain.

1. Install yt-dlp

curl -L https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp -o ~/.local/bin/yt-dlp; chmod a+rx ~/.local/bin/yt-dlp

2. Download a Video or Playlist

yt-dlp -f "best[height<=1080]+bestaudio" https://www.youtube.com/watch?v=kf5eUikyXYA

## Options cheatsheet

• Download video in best quality - yt-dlp -f bestvideo+bestaudio <URL>
• Download 1080p video - yt-dlp -f "best[height<=1080]+bestaudio" <URL>
• Download mp3 audio - yt-dlp --extract-audio --audio-format mp3 --audio-quality 0 <URL>
• Resume download - yt-dlp -c <URL>

# WhatIs Git?

Git is a version control system. It is a program that allows you to roll back changes in files to point where they were previously saved.
It also helps multiple people work on a project. Thus it can combine changes made by several developers.

Repository (or repo) - directory with all source code and other necessary files for program to work + it contains Git metadata which allows to roll back files.

# Defenitions

OpenSource Software (OSS) - Software which source code is open to read/edit/distribute, and to use for any purpose.

Free Software - Software which respects basic user freedoms (by GNU)

## User Freedoms

0. Freedom to use program to any purpose
1. Freedom to inspect and modify program for your purposes
2. Freedom to distribute copies
3. Freedom to distribute modifications

Sounds familiar, right?
But, Opensource != Free Software.
We will talk about it later

Script creates swapfile in current dir with size of physical RAM
(you can just CopyPaste to terminal)

ram=$(($(cat /proc/meminfo | grep -i 'memtotal' | grep -o '[[:digit:]]*')/1024/1024+1))

touch ./swapfile
chattr +C ./swapfile #btrfs fix
sudo fallocate -l ${ram}G ./swapfile
sudo chmod 600 ./swapfile
sudo mkswap ./swapfile
sudo swapon ./swapfile

swapon --show

Swap is not permanent, to make it permanent:

sudo cp /etc/fstab /etc/fstab.bak

echo "$PWD/swapfile none swap sw 0 0" | sudo tee -a /etc/fstab