Sebastian Storholm sstorholm

## friday.md

      
              1 file
            
          
              25 forks
            
          
                64 comments
              
            
              216 stars
            
          
                yorickdowne
                / friday.md
            
            
              Last active
              August 7, 2026 18:42
            
              
                Debian 13 trixie upgrade
              
          
    Debian 13 "Trixie"

To start, read the official release notes.
If your system is "vanilla Debian plus maybe a handful of 3rd-party repos", then this guide for a simple upgrade to Debian 13 "trixie" from Debian 12 "bookworm" can be helpful. 3rd-party repos are handled with a find command.
If you are on a fork of Debian such as RasPI OS, use their instructions, not this gist.
Note upgrade is only supported from Debian 12 to Debian 13. If you are on Debian 11, upgrade to Debian 12 first. Then once on Debian 12, you can upgrade to Debian 13.

  
## bulk-convert.ps1
# Copy this file to any directory containing images & then run this script in powershell
# Get all png images in the current directory & convert it to webp format
$images = Get-ChildItem -Path (Get-Location) -Filter *.png
foreach ($image in $images) {
  $fileName = $image.DirectoryName + "\" + $image.BaseName + ".webp"
  cwebp.exe -q 80 $image.FullName -o $fileName
}

## openssl_commands.md

      
              1 file
            
          
              105 forks
            
          
                5 comments
              
            
              334 stars
            
          
                Hakky54
                / openssl_commands.md
            
            
              Last active
              July 1, 2026 19:36
                — forked from p3t3r67x0/openssl_commands.md
            
              
                OpenSSL Cheat Sheet
              
          
    OpenSSL Cheat Sheet 🔐

Install

Install the OpenSSL on Debian based systems
sudo apt-get install openssl

  
## telnet-rfc-5322-email.sh
$ telnet mail.example.org 25
Trying XXX.XXX.XXX.XXX...
Connected to XXX.XXX.XXX.XXX.
Escape character is '^]'.
220 *********************************
ehlo server.example.org
250-mail.example.com
250-PIPELINING
250-SIZE 20480000
250-ETRN

## 418.conf
server {
    listen       80 default_server;

    location / {
        default_type text/plain;
        return 418 "418 I'm a teapot\n";
    }
}
	# Copy this file to any directory containing images & then run this script in powershell
	# Get all png images in the current directory & convert it to webp format
	$images = Get-ChildItem -Path (Get-Location) -Filter *.png
	foreach ($image in $images) {
	$fileName = $image.DirectoryName + "\" + $image.BaseName + ".webp"
	cwebp.exe -q 80 $image.FullName -o $fileName
	}
	$ telnet mail.example.org 25
	Trying XXX.XXX.XXX.XXX...
	Connected to XXX.XXX.XXX.XXX.
	Escape character is '^]'.
	220 *********************************
	ehlo server.example.org
	250-mail.example.com
	250-PIPELINING
	250-SIZE 20480000
	250-ETRN
	server {
	listen 80 default_server;

	location / {
	default_type text/plain;
	return 418 "418 I'm a teapot\n";
	}
	}