Skip to content

Instantly share code, notes, and snippets.

View hwdsl2's full-sized avatar

Lin Song hwdsl2

View GitHub Profile
@eagafonov
eagafonov / add_floating_route.sh
Created March 14, 2016 12:33
[DigitalOcean] Simple script to route outgoing traffic through Floating IP
#!/bin/bash -x
set -e
# https://www.digitalocean.com/community/tutorials/how-to-use-floating-ips-on-digitalocean
DESTINATION_IP=$1
shift || (echo "E: Destination IP is not provided. Aborting"; exit 1)
ANCHOR_GW=$(curl -s http://169.254.169.254/metadata/v1/interfaces/public/0/anchor_ipv4/gateway)
@m-ou-se
m-ou-se / replace-debian-with-arch.txt
Last active October 22, 2023 12:16
Instructions to replace a live Debian installation with Arch
# Download latest archlinux bootstrap package, see https://www.archlinux.org/download/
wget 'ftp://ftp.nluug.nl/pub/os/Linux/distr/archlinux/iso/latest/archlinux-bootstrap-*-x86_64.tar.gz'
# Make sure you'll have enough entropy for pacman-key later.
apt-get install haveged
# Install the arch bootstrap image in a tmpfs.
mount -t tmpfs none /mnt
cd /mnt
tar xvf ~/archlinux-bootstrap-*-x86_64.tar.gz --strip-components=1
BLOCKS=$(nslookup -q=TXT _cloud-netblocks.googleusercontent.com 8.8.8.8 | awk -F "spf1 " '{print $2}' | sed -e "s/include:/\n/g" | sed -e "s/?all\"//g" | grep -v ^$)
echo "$BLOCKS" | while read block; do nslookup -q=TXT $block 8.8.8.8 | awk -F "spf1 " '{print $2}' | sed -e "s/ip4:/\n/g" | sed -e "s/?all\"//g" |grep -v "^ip6:" | grep -v ^$; done ;
@zqqf16
zqqf16 / IKEv2.mobileconfig
Last active February 28, 2023 22:57
strongSwan IKEv2 configurations for iOS without certificate
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>PayloadContent</key>
<array>
<dict>
<key>IKEv2</key>
<dict>
<key>AuthName</key>
@PurpleBooth
PurpleBooth / README-Template.md
Last active June 22, 2024 22:08
A template to make good README.md

Project Title

One Paragraph of project description goes here

Getting Started

These instructions will get you a copy of the project up and running on your local machine for development and testing purposes. See deployment for notes on how to deploy the project on a live system.

Prerequisites

@4ft35t
4ft35t / modsecurity.md
Last active March 8, 2016 07:43
ubuntu install modsecurity with nginx

fix APXS error

configure: error: couldn’t find APXS
apache2-prefork-dev

ref1 ref2

@n0531m
n0531m / list_gcp_iprange.sh
Last active April 17, 2024 21:50
Google Cloud Platform : ip address range
#!/bin/bash
# https://cloud.google.com/compute/docs/faq#find_ip_range
# nslookup -q=TXT _cloud-netblocks.googleusercontent.com 8.8.8.8
myarray=()
for LINE in `dig txt _cloud-netblocks.googleusercontent.com +short | tr " " "\n" | grep include | cut -f 2 -d :`
do
myarray+=($LINE)
for LINE2 in `dig txt $LINE +short | tr " " "\n" | grep include | cut -f 2 -d :`
@darron
darron / gist:811cf41a6ec3dbfcb97a
Created January 5, 2015 23:19
Get IP Ranges from EC2
#!/bin/bash
# You need: curl, jq, and ipcalc to run this.
# You should already have cut, sort and uniq if you're on OS X or Linux.
RANGES=$(curl -s https://ip-ranges.amazonaws.com/ip-ranges.json | jq .prefixes | jq '.[] | select(.region=="us-east-1")' | jq 'select(.service=="EC2")' | jq .ip_prefix | cut -d '"' -f 2 | sort | uniq)
for range in $RANGES
do
MIN=$(ipcalc -bn $range | grep "HostMin" | cut -d ':' -f 2)
@othiym23
othiym23 / npm-upgrade-bleeding.sh
Created September 20, 2014 19:36
a safe way to upgrade all of your globally-installed npm packages
#!/bin/sh
set -e
set -x
for package in $(npm -g outdated --parseable --depth=0 | cut -d: -f3)
do
npm -g install "$package"
done
@pnommensen
pnommensen / gist:707b5519766ba45366dd
Last active February 18, 2024 21:52
Ghost CMS with NGINX for Maximum Performance

Full blog post can be found here: http://pnommensen.com/2014/09/07/high-performance-ghost-configuration-with-nginx/

Ghost is an open source platform for blogging founded by John O'Nolan and Hannah Wolfe. It's a node.js application and therefore works great in conjunction with nginx. This guide will will help you create a high performance nginx virtual host configuration for Ghost.

"Don't use #nodejs for static content" - @trevnorris. If #nginx isn't sitting in front of your node server, you're probably doing it wrong.

— Bryan Hughes (@nebrius) August 30, 2014
<script async src="//platform.twitter.com/widgets.js" charset="utf-8"></script>

The node.js application runs on a port on your server