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Dylan Wang Ehekatl

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@halberom
halberom / custom.py
Last active September 15, 2017 07:31
ansible - jinja filter for dict merging
from jinja2.utils import soft_unicode
def merge_dicts(value, dict1):
# return a merged dict
result = {}
result.update(value)
result.update(dict1)
return result
class FilterModule(object):
@brahman81
brahman81 / nvme-mapping.sh
Last active September 16, 2019 08:02
#!/bin/bash
# Inspired by https://github.com/oogali/ebs-automatic-nvme-mapping
# Thanks Oogali!
# Tested on Ubuntu 16.04
# To be used with the below udev rule (/etc/udev/rules.d/99-ebs-nvme.rules)
# SUBSYSTEM=="block", KERNEL=="nvme[0-9]*n[0-9]*", ATTRS{model}=="Amazon Elastic Block Store", PROGRAM+="/usr/local/sbin/nvme-mapping.sh /dev/%k" SYMLINK+="%c"
if [[ -x /usr/sbin/nvme ]] && [[ -b ${1} ]]; then
# capture 32 bytes at an offset of 3072 bytes from the raw-binary data
# not all block devices are extracted with /dev/ prefix
@mattymo
mattymo / yaml_ordered.py
Last active September 29, 2019 11:02 — forked from willmerae/yaml_ordered.py
Ansible inventory plugin that preserves the order of hosts in a host group
# Copyright (c) 2017 Ansible Project
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
from __future__ import absolute_import, division, print_function
import os
from collections import MutableMapping
from yaml.nodes import MappingNode
@Blankwonder
Blankwonder / gist:feefe4e23865d1464d5f
Created October 26, 2015 15:07
bypass-tun = 0.0.0.0/8, 1.0.0.0/9, 1.160.0.0/11, 1.192.0.0/11, 10.0.0.0/8, 14.0.0.0/11, 14.96.0.0/11, 14.128.0.0/11, 14.192.0.0/11, 27.0.0.0/10, 27.96.0.0/11, 27.128.0.0/9, 36.0.0.0/10, 36.96.0.0/11, 36.128.0.0/9, 39.0.0.0/11, 39.64.0.0/10, 39.128.0.0/10, 42.0.0.0/8, 43.224.0.0/11, 45.64.0.0/10, 47.64.0.0/10, 49.0.0.0/9, 49.128.0.0/11, 49.192.0.0/10, 54.192.0.0/11, 58.0.0.0/9, 58.128.0.0/11, 58.192.0.0/10, 59.32.0.0/11, 59.64.0.0/10, 59.128.0.0/9, 60.0.0.0/10, 60.160.0.0/11, 60.192.0.0/10, 61.0.0.0/10, 61.64.0.0/11, 61.128.0.0/10, 61.224.0.0/11, 100.64.0.0/10, 101.0.0.0/9, 101.128.0.0/11, 101.192.0.0/10, 103.0.0.0/10, 103.192.0.0/10, 106.0.0.0/9, 106.224.0.0/11, 110.0.0.0/7, 112.0.0.0/9, 112.128.0.0/11, 112.192.0.0/10, 113.0.0.0/9, 113.128.0.0/11, 113.192.0.0/10, 114.0.0.0/9, 114.128.0.0/11, 114.192.0.0/10, 115.0.0.0/8, 116.0.0.0/8, 117.0.0.0/9, 117.128.0.0/10, 118.0.0.0/11, 118.64.0.0/10, 118.128.0.0/9, 119.0.0.0/9, 119.128.0.0/10, 119.224.0.0/11, 120.0.0.0/10, 120.64.0.0/11, 120.128.0.0/11, 120.192.0.0/10,
@derpston
derpston / gist:2069716
Created March 18, 2012 07:42
Unpacking and repacking initramfs images
# Unpack
gzip -cd /boot/initramfs.example | cpio -i
# Repack
find . | cpio --dereference -o -H newc | gzip > /boot/initramfs.example
@mpontillo
mpontillo / test-maas-enlistment.sh
Last active February 2, 2022 08:47
Script to fetch the default TFTP configuration from MAAS and fetch the cloud-config URL.
#!/bin/bash -e
TMPDIR="$(mktemp -d)"
function cleanup() {
rm -rf "$TMPDIR"
}
trap cleanup EXIT
@NLKNguyen
NLKNguyen / Ubuntu install kernel -dbgsym
Last active March 24, 2022 00:25
Ubuntu - Install Debug Symbol Package (-dbgsym) for the current Linux kernel
codename=$(lsb_release -c | awk '{print $2}')
sudo tee /etc/apt/sources.list.d/ddebs.list << EOF
deb http://ddebs.ubuntu.com/ ${codename} main restricted universe multiverse
deb http://ddebs.ubuntu.com/ ${codename}-security main restricted universe multiverse
deb http://ddebs.ubuntu.com/ ${codename}-updates main restricted universe multiverse
deb http://ddebs.ubuntu.com/ ${codename}-proposed main restricted universe multiverse
EOF
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys ECDCAD72428D7C01
sudo apt-get update
@johnbintz
johnbintz / simple-capistrano-docker-deploy.rb
Last active April 3, 2023 08:23
Simple Capistrano deploy for a Docker-managed app
# be sure to comment out the require 'capistrano/deploy' line in your Capfile!
# config valid only for Capistrano 3.1
lock '3.2.1'
set :application, 'my-cool-application'
# the base docker repo reference
set :name, "johns-stuff/#{fetch(:application)}"
@nicowilliams
nicowilliams / fork-is-evil-vfork-is-good-afork-would-be-better.md
Last active November 5, 2023 12:14
fork() is evil; vfork() is goodness; afork() would be better; clone() is stupid

I recently happened upon a very interesting implementation of popen() (different API, same idea) called popen-noshell using clone(2), and so I opened an issue requesting use of vfork(2) or posix_spawn() for portability. It turns out that on Linux there's an important advantage to using clone(2). I think I should capture the things I wrote there in a better place. A gist, a blog, whatever.

This is not a paper. I assume reader familiarity with fork() in particular and Unix in general, though, of course, I link to relevant wiki pages, so if the unfamiliar reader is willing to go down the rabbit hole, they should be able to come ou

@gdvalle
gdvalle / putty-monokai.reg
Created December 2, 2012 05:24
Monokai style theme for PuTTY; colors copied from ST2's theme
Windows Registry Editor Version 5.00
[HKEY_CURRENT_USER\Software\SimonTatham\PuTTY\Sessions\monokai]
"Colour21"="255,255,255"
"Colour20"="245,222,179"
"Colour19"="200,240,240"
"Colour18"="0,217,217"
"Colour17"="179,146,239"
"Colour16"="174,129,255"
"Colour15"="122,204,218"