Mandar Gokhale mandarg

Problem: SSH in kubernetes

SSH (and git+ssh) has very particular opinions about file permissions. In Kubernetes you can set secret file permissions, but not ownership: (see the "Secret files permissions" section) https://kubernetes.io/docs/concepts/configuration/secret/#using-secrets

apiVersion: v1
kind: Pod
metadata:
  name: security-context-demo

Cryptography

https://github.com/spieglt/cloaker - password-based file encryptor (NOTE: uses Qt)
https://github.com/str4d/rage - file encryption tool and librarary that uses the age format

Media

https://github.com/mohanson/gameboy - gameboy emulator
https://github.com/bartwillems/lyriek - fetch the lyrics of a song playing in an mpris-compatible player
https://github.com/JakeStanger/mpd-discord-rpc - discordrpc for mpd

How to setup a practically free CDN using Backblaze B2 and Cloudflare

⚠️ Note 2023-01-21
Some things have changed since I originally wrote this in 2016. I have updated a few minor details, and the advice is still broadly the same, but there are some new Cloudflare features you can (and should) take advantage of. In particular, pay attention to Trevor Stevens' comment here from 22 January 2022, and Matt Stenson's useful caching advice. In addition, Backblaze, with whom Cloudflare are a Bandwidth Alliance partner, have published their own guide detailing how to use Cloudflare's Web Workers to cache content from B2 private buckets. That is worth reading,

How to Use DDSKK Japanese Input Method for Emacs

This tutorial describes the basic usage of DDSKK Japanese input method for Emacs.

Installation and configuration

Install ddskk package.

Turn on skk-mode minor mode to write Japanese. It is recommended that you should bind a key to this command:

I'm getting adverts in my TV's UI, help!

Samsung's otherwise excellent 2016 range of UHD TVs received an update that added advertisements to the UI. This has been complained about at great length on Samsung's forums and repeatedly, Samsung have refused to add an option to remove them.

The ads interrupt the clean UI of the TV and are invasive. Here's an example of how they look:

This guide was originally posted on Samsung's TV forums but unfortunately, that site is a super-slow and barely accessible unusable mess.

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

Did you see my talk about strace? Do you want to know more? Here's your chance!

If you didn't, and you want to watch it, go watch it! Spying on your programs with strace

more strace resources (Linux-only)

I've written tons of blog posts about strace. I'm a little bit obsessed. You can read them at http://jvns.ca/blog/categories/strace/. If you want an introduction, start with Debug your programs like they're closed source.
Strace - The Syadmin's Microscope and Strace: The Lost Chapter are both excellent articles by Greg Price
Brendan Gregg has an excellent article about how strace will slow your processes down, and when it's not appropriate to use it

	// Tailscale Frontend: It uses tailscale-as-a-library to
	// listen on a port, independently from the operating system network, i.e. you
	// can run an nginx server on :80 and :443 without impacting the frontend.
	//
	// set up DNS, e.g.:
	// prometheus.ts.zekjur.net A 100.117.6.125
	//
	// frontend% TAILSCALE_USE_WIP_CODE=true tailscalefrontend -hostname=srv.example.net [email protected]
	//
	// (first login requires running with TS_LOGIN=1 environment variable to print link for the browser)

	;;; onlinego.el

	;; Author: Matthew Jones <[email protected]>
	(require 'request)

	(defvar onlinego-api-base "https://online-go.com/api/v1"
	"The base onlinego api url")

	(defcustom onlinego-api-client-id nil
	"onlinego api client id, see: https://online-go.com/developer"


	PS1='\[\033[31m\]\w\[\033[0m\] $ '

	export EDITOR=vim

	alias st='git status -sb'