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server {
listen 80;
server_name backend;
root /usr/share/nginx/www;
index index.html index.html;
location / {
header_filter_by_lua '
#!/bin/bash
#
# Copyright (c) 2015, Intel Corporation
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
hdparm --user-master u --security-set-pass PasSWorD /dev/sdX
hdparm --user-master u --security-erase PasSWorD /dev/sdX
@joostrijneveld
joostrijneveld / gpg2qrcodes.sh
Created May 20, 2014 19:43
Producing printable QR codes for persistent storage of GPG private keys
# Heavily depends on:
# libqrencode (fukuchi.org/works/qrencode/)
# paperkey (jabberwocky.com/software/paperkey/)
# zbar (zbar.sourceforge.net)
# Producing the QR codes:
# Split over 4 codes to ensure the data per image is not too large.
gpg --export-secret-key KEYIDGOESHERE | paperkey --output-type raw | base64 > temp
split temp -n 4 IMG
for f in IMG*; do cat $f | qrencode -o $f.png; done
@shamil
shamil / mount_qcow2.md
Last active March 25, 2026 21:38
How to mount a qcow2 disk image

How to mount a qcow2 disk image

This is a quick guide to mounting a qcow2 disk images on your host server. This is useful to reset passwords, edit files, or recover something without the virtual machine running.

Step 1 - Enable NBD on the Host

modprobe nbd max_part=8
@pklaus
pklaus / ddnsserver.py
Last active March 15, 2026 12:30 — forked from andreif/Simple DNS server (UDP and TCP) in Python using dnslib.py
Simple DNS server (UDP and TCP) in Python using dnslib.py
#!/usr/bin/env python
"""
LICENSE http://www.apache.org/licenses/LICENSE-2.0
"""
import argparse
import datetime
import sys
import time
import threading
@denji
denji / golang-tls.md
Last active February 21, 2026 12:07 — forked from spikebike/client.go
Simple Golang HTTPS/TLS Examples
Generate private key (.key)
# Key considerations for algorithm "RSA" ≥ 2048-bit
openssl genrsa -out server.key 2048

# Key considerations for algorithm "ECDSA" ≥ secp384r1
# List ECDSA the supported curves (openssl ecparam -list_curves)
@svdamani
svdamani / pow.py
Last active April 17, 2020 10:44
Fast Power calculation in Python
def power(base, exp):
""" Fast power calculation using repeated squaring """
if exp < 0:
return 1 / power(base, -exp)
ans = 1
while exp:
if exp & 1:
ans *= base
exp >>= 1
base *= base
@chrismdp
chrismdp / s3.sh
Last active January 14, 2026 15:31
Uploading to S3 in 18 lines of Shell (used to upload builds for http://soltrader.net)
# You don't need Fog in Ruby or some other library to upload to S3 -- shell works perfectly fine
# This is how I upload my new Sol Trader builds (http://soltrader.net)
# Based on a modified script from here: http://tmont.com/blargh/2014/1/uploading-to-s3-in-bash
S3KEY="my aws key"
S3SECRET="my aws secret" # pass these in
function putS3
{
path=$1
@Jaza
Jaza / Private-pypi-howto
Last active July 2, 2023 16:24
Guide for how to create a (minimal) private PyPI repo, just using Apache with directory autoindex, and pip with an extra index URL.
*