Skip to content

Instantly share code, notes, and snippets.

View JanKoppe's full-sized avatar
🐧
NOOT NOOT!

Jan Koppe JanKoppe

🐧
NOOT NOOT!
36 followers · 34 following
View GitHub Profile
@MohamedAlaa
MohamedAlaa / tmux-cheatsheet.markdown
Last active May 10, 2024 16:49
tmux shortcuts & cheatsheet

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname
@willurd
willurd / web-servers.md
Last active May 10, 2024 05:14
Big list of http static server one-liners

Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000
@nitred
nitred / optimal_mtu.md
Last active May 10, 2024 04:35
Wireguard Optimal MTU

About

  • I faced bandwidth issues between a WG Peer and a WG server. Download bandwidth when downloading from WG Server to WG peer was reduced significantly and upload bandwidth was practically non existent.
  • I found a few reddit posts that said that we need to choose the right MTU. So I wrote a script to find an optimal MTU.
  • Ideally I would have liked to have run all possible MTU configurations for both WG Server and WG Peer but for simplicity I choose to fix the WG Server to the original 1420 MTU and tried all MTUs from 1280 to 1500 for the WG Peer.

Testing

  • On WG server, I started an iperf3 server
  • On WG peer, I wrote a script that does the following:
    • wg-quick down wg0
  • Edit MTU in the /etc/wireguard/wg0.conf file
@scyto
scyto / proxmox-tb-net.md
Last active May 9, 2024 19:51
Thunderbolt Networking Setup

Thunderbolt Networking

this gist is part of this series

NOTE FOR THIS TO BE RELIABLE ON NODE RESTARTS YOU WILL NEED PROXMOX KERNEL 6.2.16-14-pve OR HIGER

This fixes issues i bugged with the thunderbolt / thunderbolt-net maintainers (i will take everyones thanks now, lol)

Install LLDP - this is great to see what nodes can see which.

  • install lldpctl with apt install lldpd
@troyfontaine
troyfontaine / 1-setup.md
Last active May 9, 2024 15:16
Signing your Git Commits on MacOS

Methods of Signing Git Commits on MacOS

Last updated March 13, 2024

This Gist explains how to sign commits using gpg in a step-by-step fashion. Previously, krypt.co was heavily mentioned, but I've only recently learned they were acquired by Akamai and no longer update their previous free products. Those mentions have been removed.

Additionally, 1Password now supports signing Git commits with SSH keys and makes it pretty easy-plus you can easily configure Git Tower to use it for both signing and ssh.

For using a GUI-based GIT tool such as Tower or Github Desktop, follow the steps here for signing your commits with GPG.

@taterbase
taterbase / upload.php
Created May 13, 2012 15:03
Simple file upload in php
<!DOCTYPE html>
<html>
<head>
<title>Upload your files</title>
</head>
<body>
<form enctype="multipart/form-data" action="upload.php" method="POST">
<p>Upload your file</p>
<input type="file" name="uploaded_file"></input><br />
<input type="submit" value="Upload"></input>
@chrisswanda
chrisswanda / WireGuard_Setup.txt
Last active May 8, 2024 20:24
Stupid simple setting up WireGuard - Server and multiple peers
Install WireGuard via whatever package manager you use. For me, I use apt.
$ sudo add-apt-repository ppa:wireguard/wireguard
$ sudo apt-get update
$ sudo apt-get install wireguard
MacOS
$ brew install wireguard-tools
Generate key your key pairs. The key pairs are just that, key pairs. They can be
@sivel
sivel / better-ssh-authorized-keys-management.md
Last active May 3, 2024 14:20
Better SSH Authorized Keys Management

Better SSH Authorized Keys Management

A seemingly common problem that people encounter is how to handle all of your users authorized_keys file.

People struggle over management, ensuring that users only have specific keys in the authorized_keys file or even a method for expiring keys. A centralized key management system could help provide all of this functionality with a little scripting.

One piece of functionality overlooked in OpenSSH is the AuthorizedKeysCommand configuration keyword. This configuration allows you to specify a command that will run during login to retrieve a users public key file from a remote source and perform validation just as if the authorized_keys file was local.

Here is an example directory structure for a set of users with SSH public keys that can be shared out via a web server:

@hrldcpr
hrldcpr / tree.md
Last active May 1, 2024 00:11
one-line tree in python

One-line Tree in Python

Using Python's built-in defaultdict we can easily define a tree data structure:

def tree(): return defaultdict(tree)

That's it!

@lelandbatey
lelandbatey / whiteboardCleaner.md
Last active April 25, 2024 02:01
Whiteboard Picture Cleaner - Shell one-liner/script to clean up and beautify photos of whiteboards!

Description

This simple script will take a picture of a whiteboard and use parts of the ImageMagick library with sane defaults to clean it up tremendously.

The script is here:

#!/bin/bash
convert "$1" -morphology Convolve DoG:15,100,0 -negate -normalize -blur 0x1 -channel RBG -level 60%,91%,0.1 "$2"

Results