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@tuansoibk
tuansoibk / cryptography-file-formats.md
Last active May 6, 2024 11:56
Cryptography material conversion and verification commands
  1. Introduction
  2. Standards
  3. Common combinations
  4. Conversion
  5. Verification/Inspection
  6. Tips for recognising

Introduction

It happens that there are many standards for storing cryptography materials (key, certificate, ...) and it isn't always obvious to know which standard is used by just looking at file name extension or file content. There are bunch of questions on stackoverflow asking about how to convert from PEM to PKCS#8 or PKCS#12, while many tried to answer the questions, those answers may not help because the correct answer depends on the content inside the PEM file. That is, a PEM file can contain many different things, such as an X509 certificate, a PKCS#1 or PKCS#8 private key. The worst-case scenario is that someone just store a non-PEM content in "something.pem" file.

@ssokolow
ssokolow / x11_watch_active_window.py
Last active February 6, 2024 22:50
python-xlib example which reacts to changing the active window
#!/usr/bin/env python
"""python-xlib example which reacts to changing the active window/title.
Requires:
- Python
- python-xlib
Tested with Python 2.x because my Kubuntu 14.04 doesn't come with python-xlib
for Python 3.x.
@fstab
fstab / MATRIX.md
Last active January 5, 2022 12:31
How to use matrix.org and vector.im as an IRC client

How to use matrix.org and vector.im as an IRC client

How to Join an IRC Channel on matrix.org

Join the room #freenode_<#channel>:matrix.org, replacing <#channel> with the name of the IRC channel. For example, in order to join the #prometheus IRC channel, join the room #freenode_#prometheus:matrix.org on matrix.org.

In vector.im, rooms can be joined with the directory symbol on the bottom left.

@fwenzel
fwenzel / plex_restart.sh
Created April 26, 2012 03:17
Simple watchdog script to restart plex media server if it becomes unresponsive.
#!/bin/bash
# If plex is not running, don't do anything.
plex_running=`ps ax | grep "\./Plex Media Server" | awk '{ print $1 }' | wc -l`
if [ "$plex_running" -eq 1 ]; then
exit 0
fi
# Test Plex web interface. If it's dead, this'll time out in a few seconds.
curl -I -m 8 "http://localhost:32400/library/sections" > /dev/null 2>&1
@masak
masak / explanation.md
Last active April 11, 2024 02:50
How is git commit sha1 formed

Ok, I geeked out, and this is probably more information than you need. But it completely answers the question. Sorry. ☺

Locally, I'm at this commit:

$ git show
commit d6cd1e2bd19e03a81132a23b2025920577f84e37
Author: jnthn <jnthn@jnthn.net>
Date:   Sun Apr 15 16:35:03 2012 +0200

When I added FIRST/NEXT/LAST, it was idiomatic but not quite so fast. This makes it faster. Another little bit of masak++'s program.

@pklaus
pklaus / etc_config_network.md
Last active September 20, 2018 20:22
OpenWrt: Configure WiFi Client as WAN and set up a 2nd AP to redistribute the WAN-Access – http://goo.gl/bIVik

Please check here for an up-to-date config for a WISP (wireless ISP) setup on OpenWrt 14.07.