isaacs

echo 'export PATH=$HOME/local/bin:$PATH' >> ~/.bashrc
. ~/.bashrc
mkdir ~/local
mkdir ~/node-latest-install
cd ~/node-latest-install
curl http://nodejs.org/dist/node-latest.tar.gz | tar xz --strip-components=1
./configure --prefix=~/local
make install # ok, fine, this step probably takes more than 30 seconds...
curl https://www.npmjs.org/install.sh | sh

proudlygeek

1. Install NFS on Server

Install the required packages (Ubuntu 12.04):

apt-get install nfs-kernel-server portmap

2. Share NFS Folder

Open the exports file:

vim /etc/exports

staltz

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

---

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

---

LeCoupa

// XPath CheatSheet
// To test XPath in your Chrome Debugger: $x('/html/body')
// http://www.jittuu.com/2012/2/14/Testing-XPath-In-Chrome/


// 0. XPath Examples.
// More: http://xpath.alephzarro.com/content/cheatsheet.html


'//hr[@class="edge" and position()=1]'                // every first hr of 'edge' class

arfon

How many times shouldn't it happen...

-- https://news.ycombinator.com/item?id=11396045

SELECT count(*)
FROM (SELECT id, repo_name, path
        FROM [bigquery-public-data:github_repos.sample_files]
 ) AS F

tonyseek

#!/usr/bin/env sh

## I don't have any devices running Android OS now. These settings may have been outdated but I cannot verify it.

adb shell settings put global captive_portal_fallback_url http://g.cn/generate_204
adb shell settings put global captive_portal_http_url http://www.google.cn/generate_204
adb shell settings put global captive_portal_https_url https://www.google.cn/generate_204
adb shell settings put global captive_portal_other_fallback_urls http://www.qualcomm.cn/generate_204

chrisdone

Common

export OPT=/opt
export BUILDS=/some/where/mini_linux
mkdir -p $BUILDS

Linux kernel

extremecoders-re

Setting up Qemu with a tap interface

There are two parts to networking within QEMU:

• The virtual network device that is provided to the guest (e.g. a PCI network card).
• The network backend that interacts with the emulated NIC (e.g. puts packets onto the host's network).

Example: User mode network

jackyyf

#!/bin/bash -e
# 
# wireguard helper script
#

IP=/sbin/ip

if [ "$IF_WG_CONF" -o "$IF_WG_PRIVATE_KEY" ]
then
	$IP link del $IFACE

anatol

https://medium.com/@clem.boin/creating-a-minimal-kernel-development-setup-using-qemu-and-archlinux-987896954d84

# Install Arch system
qemu-image -f qcow2 kernel-dev-archlinux.img 4G
wget http://mirrors.edge.kernel.org/archlinux/iso/2018.12.01/archlinux-2018.12.01-x86_64.iso
# Note that ping does not work here
qemu-system-x86_64 -cdrom archlinux-2018.12.01-x86_64.iso -boot order=d -drive file=kernel-dev-archlinux.img,format=qcow2 -m 2G -enable-kvm -cpu host -smp 8 -net user,hostfwd=tcp::10022-:22 -net nic