Skip to content

Instantly share code, notes, and snippets.

@endolith
endolith / readme.md
Last active July 2, 2025 20:13
THD+N calculator

Unfortunately, there are 2 versions of this. The other is here: https://github.com/endolith/waveform-analyzer I intend to either completely combine them or completely separate them, eventually.

Somewhat crude THD+N calculator in Python

Measures the total harmonic distortion plus noise (THD+N) for a given input signal, by guessing the fundamental frequency (finding the peak in the FFT), and notching it out in the frequency domain. This is a THDR

@adrianratnapala
adrianratnapala / SSH-X11-Forwarding.md
Created October 29, 2011 17:43
A note on X11-Forwarding in SSh.

I used to think that

ssh -X [email protected]

"just bloody worked". However this might not work - ssh must play ball on both sides of the link. On the remote (ssh server, X client) sshd must sit behind some port, tell Xlib to send X11 requests to it and then forward them back to you the X server (where the ssh client is). If the remote box is locked down to prevent this, you will get:

X11 forwarding request failed on channel 0

as part of an otherwise working login. As it happens, I am the admin of the remote box in question, so I followed the ArchWiki and went to /etc/ssh/sshd_config and uncommented

@bxt
bxt / proxy.py
Last active August 30, 2020 15:57
A very basic caching python HTTP proxy server.
# Originally from http://sharebear.co.uk/blog/2009/09/17/very-simple-python-caching-proxy/
#
# Usage:
# A call to http://localhost:80000/example.com/foo.html will cache the file
# at http://example.com/foo.html on disc and not redownload it again.
# To clear the cache simply do a `rm *.cached`. To stop the server simply
# send SIGINT (Ctrl-C). It does not handle any headers or post data.
import BaseHTTPServer
import hashlib
@jeremiahsnapp
jeremiahsnapp / MITM -SSL-Proxies.md
Last active November 14, 2023 07:48
Man In The Middle (MITM) SSL Proxies - Simple ways to see traffic between an SSL server and client in clear text.

HTTP(S) specific MITM SSL Proxies

mitmproxy

mitmproxy is an excellent console app written in Python.

It is easy to use on Linux and OS X.

Use brew install mitmproxy to install it on OS X.

@marianposaceanu
marianposaceanu / linux_fun.md
Last active March 16, 2025 22:31
How to have some fun using the terminal.

Linux fun-o-matic

How to have some fun using the terminal.

  1. Install cowsay [0] via : sudo apt-get install cowsay
  2. Install fortune [1] via : sudo apt-get install fortune
  3. Make sure you have Ruby installed via : ruby -v
  4. Install the lolcat [2] via : gem gem install lolcat
  5. Profit!

Live Transcoding

This is a collection of working commandline examples to show how one could use FFMpeg and VLC for live transcoding of video streams. All examples have been tested on OSX 10.7.5 with FFMPeg 1.1.3 and VLC 2.0.5 in early 2013.

Documentation links

@zlorb
zlorb / linux_fun.md
Last active June 21, 2025 14:20 — forked from marianposaceanu/linux_fun.md
How to have some fun using the terminal.

Linux fun-o-matic

How to have some fun using the terminal.

  1. Install cowsay [0] via : sudo apt-get install cowsay
  2. Install fortune [1] via : sudo apt-get install fortune
  3. Install figlet [3] via : sudo apt-get install figlet
  4. Make sure you have Ruby installed via : ruby -v
  5. Install the lolcat [2] via : gem gem install lolcat
  6. (option) Add to .bash_profile and/or .bashrc
@bastman
bastman / docker-cleanup-resources.md
Created March 31, 2016 05:55
docker cleanup guide: containers, images, volumes, networks

Docker - How to cleanup (unused) resources

Once in a while, you may need to cleanup resources (containers, volumes, images, networks) ...

delete volumes

// see: https://github.com/chadoe/docker-cleanup-volumes

$ docker volume rm $(docker volume ls -qf dangling=true)

$ docker volume ls -qf dangling=true | xargs -r docker volume rm

@stonehippo
stonehippo / docker_x11_gui_osx.md
Last active March 18, 2025 02:28
Getting X11 GUI applications to work on OS X with Docker

Getting X11 GUI applications to work on OS X with Docker

$ brew install socat
$ brew cask install xquartz <--- assuming you don't already have XQuartz installed some other way
$ open -a XQuartz <--- start an XQuartz session

$ socat TCP-LISTEN:6000,reuseaddr,fork UNIX-CLIENT:\"$DISPLAY\"
@JoaquimLey
JoaquimLey / github_multiple-accounts.md
Last active December 26, 2024 06:16
How to Work with GitHub and Multiple Accounts

Step 1 - Create a New SSH Key

We need to generate a unique SSH key for our second GitHub account.

ssh-keygen -t rsa -C "your-email-address"

Be careful that you don't over-write your existing key for your personal account. Instead, when prompted, save the file as id_rsa_COMPANY. In my case, I've saved the file to ~/.ssh/id_rsa_work.

Step 2 - Attach the New Key