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$ sudo -i
$ dnf update
$ dnf install tmux -y

# Fix known issue with CentOS/Redhat. Ref: https://stackoverflow.com/a/68841102/8724367
$ setsebool -P httpd_can_network_connect 1

# Add 4GB Swap. Ref https://www.digitalocean.com/community/tutorials/how-to-add-swap-on-centos-7#create-a-swap-file
$ dd if=/dev/zero of=/swapfile count=4096 bs=1MiB

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$ sudo -i
$ whoami
root
$ cat /etc/os-release 
PRETTY_NAME="Ubuntu 22.04.3 LTS"
NAME="Ubuntu"
VERSION_ID="22.04"
VERSION="22.04.3 LTS (Jammy Jellyfish)"
VERSION_CODENAME=jammy

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OpenSSL 🔐

Install

Install the OpenSSL on Debian based systems

sudo apt-get install openssl

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OS tools and user friendly cryptography GUI tools

Windows Certificate Manager Tool (certmgr.msc) Manage storage for x509 keys. No support for PGP/GPG. Can't sign or encode, can't generate a key. You can use IIS webserver managemnt console to generate a cert.Proprietary

GNOME Seahorse GUI for SSH keys, X509 certs, PGP/GPG. Linux only.

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$ cat <<EOT > docker-compose.yaml
version: "3"
services:
  runner:
    image: gitlab/gitlab-runner
    restart: unless-stopped
    entrypoint:
    - /bin/sh
 - -c

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$ cat <<EOF > nginx.conf
server {
    listen 80;
    listen [::]:80;
    server_name _;
    
    root /usr/share/nginx/html;

 location / {

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EC2 Instance Profile (IAM Role)

IAM Role Trust Relationship:

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Principal": {
                "Service": "ec2.amazonaws.com"

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set -e, -u, -o, -x pipefail

The set lines

• These lines deliberately cause your script to fail. Wait, what? Believe me, this is a good thing.
• With these settings, certain common errors will cause the script to immediately fail, explicitly and loudly. Otherwise, you can get hidden bugs that are discovered only when they blow up in production.

• set -euxo pipefail is short for:

set -e
set -u

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server {
  server_name stream.example.com;
  listen 443 ssl http2; # managed by Certbot
  ssl_certificate /etc/letsencrypt/live/stream.example.com/fullchain.pem; # managed by Certbot
  ssl_certificate_key /etc/letsencrypt/live/stream.example.com/privkey.pem; # managed by Certbot
  include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot
  ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot

  ###### Jellyfin - Reverse Proxy Recommended Config Start (https://jellyfin.org/docs/general/networking/nginx.html) ######
  add_header Strict-Transport-Security "max-age=31536000" always;

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setup.py

package_data

package_data copy the files into Python site-packages level directory.

data_files

data_files copy the files into System-wide level directory.

install_requires

install_requires install the library dependencies.