jfeilbach

Ubuntu 22.04 Annoyances

Here are a few collected ways I like to customize Ubuntu 22.04 servers. I used to love Ubuntu, but I hate auto updates and snaps. They also put ads and other usless ads diguised as "news" in MOTD. ESM FUD is spread throughout the OS including simple apt functions. You do not need ESM and thus Ubuntu 22.04 has become super annoying. unattended-upgrade is an automatic installation of security (and other) upgrades without user intervention. Consider the ramifications of disabling this service.

Disable unattended upgrades

The Unattended Upgrades feature is enabled by default and it runs at system boot without the user's permission. The configuration is stored in /etc/apt/apt.conf.d/20auto-upgrades

Disable: sudo dpkg-reconfigure unattended-upgrades then a TUI will come up, select "No"

This will not permantently disable the function. After an update it will be enabled. In the file /etc/apt/apt.conf.d/20auto-upgrades change these values from 1 to 0. Even doing this it will

dxdxdt

What to do when Gmail marks all the mails from your server as spam

If you're self-hosting your services and having trouble getting your emails through Gmail and infuriated by Google's non-existent support, you're not the only one. I'd like to share my experiences trying to get it sorted out.

• https://support.google.com/mail/thread/171517615?hl=en&msgid=172576102

I'm the author of the post above. You can tell how arrogant Google employees are from all the previous posts he made in the past.

mcattarinussi

GPG - SSH setup

Generating the master key

Here we create the master key. We want only Certify capability: we use the master key only to create the subkeys, Sign - Encrypt - Authenticate capabilities will be assigned to the subkeys.

Run the following command to start the master key generation process. Select the set your own capabilities creation process (type 8)

  ▶ gpg --full-generate-key --expert

gpg (GnuPG) 2.2.9; Copyright (C) 2018 Free Software Foundation, Inc.

jarun

" script modified from: https://bitbucket.org/sjl/dotfiles/src/b6d64b1c4cdf53060e3c30b3b87a653a30dc85d0/vim/vimrc?at=default&fileviewer=file-view-default#vimrc-3125
"
" ctermbg color code ref: http://vim.wikia.com/wiki/Xterm256_color_names_for_console_Vim
" Usage
" -----
" Add the following to your .vimrc:
"    :map <silent> <C-a> :normal! gv"zy<CR>
" Use '\1' to '\9' for different color highlighting. '\0' clears all highlighting.
" In general, a visual selection followed by 1. Esc and 2. ^a will be highlighted.
" If there is no visual selection, the word under cursor will be highlighted.

steven2358

FFmpeg cheat sheet

A list of useful commands for the FFmpeg command line tool.

Download FFmpeg: https://www.ffmpeg.org/download.html

Full documentation: https://www.ffmpeg.org/ffmpeg.html

Basic conversion

gist:c94cadade3a8b87dcdc52c639f0641b4

<noscript id="textNS">
                |                                             |
                | a  w r i t e u p  r e l e a s e  b y  r o l |
                |      ________  ___  ________  ________      |
                |     <_  __   \/   \/        \/ ____   \     |                  
                |      T  T<___/\___/\_  /\  _/\ \__j  _/     |
                |      |  |     T   T T /  \ T__\____  T      |
                |      |  |     |   | | \  / |T T   T  |      |
                |      l__j_____l___j_l__><__j| |   |  |      |

dekz

fstash() {
  local out q k sha
  while out=$(
    git stash list --pretty="%C(yellow)%h %>(14)%Cgreen%cr %C(blue)%gs" |
    fzf --ansi --no-sort --query="$q" --print-query \
        --expect=ctrl-d,ctrl-b);
  do
    IFS=$'\n'; set -f
    lines=($(<<< "$out"))
    unset IFS; set +f

dpino

#!/usr/bin/env bash

# set -x

if [[ $EUID -ne 0 ]]; then
    echo "You must be root to run this script"
    exit 1
fi

# Returns all available interfaces, except "lo" and "veth*".

graphitemaster

Tutorial 0

What is Vulkan

Vulkan is a low-overhead, cross-platform 3D graphics and compute API.

Vulkan targets

Vulkan targets high-performance realtime 3D graphics applications such as games and interactive media across multiple platforms providing higher performance and lower CPU usage.

vasanthk

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

1. Clarify and agree on the scope of the system

• User cases (description of sequences of events that, taken together, lead to a system doing something useful)
  • Who is going to use it?
  • How are they going to use it?