smoser

## Install necessary packages
$ sudo apt-get install virtualbox-ose qemu-utils genisoimage cloud-utils

## get kvm unloaded so virtualbox can load
$ sudo modprobe -r kvm_amd kvm_intel
$ sudo service virtualbox stop
$ sudo service virtualbox start

## URL to most recent cloud image of 12.04
$ img_url="http://cloud-images.ubuntu.com/server/releases/12.04/release"

jonhoo

/**
 * Hello, and welcome to this brief, but hopefully complete, example file for
 * wireless packet injection using pcap.
 *
 * Although there are various resources for this spread on the web, it is hard
 * to find a single, cohesive piece that shows how everything fits together.
 * This file aims to give such an example, constructing a fully valid UDP packet
 * all the way from the 802.11 PHY header (through radiotap) to the data part of
 * the packet and then injecting it on a wireless interface
 *

hofmannsven

MySQL

Getting started

• http://www.sqlteaching.com/
• https://www.codecademy.com/learn/learn-sql
• https://www.codecademy.com/catalog/language/sql

Related tutorials

• MySQL-CLI
• Analyzing Business Metrics

nicktoumpelis

git clean -xfd
git submodule foreach --recursive git clean -xfd
git reset --hard
git submodule foreach --recursive git reset --hard
git submodule update --init --recursive

myusuf3

To remove a submodule you need to:

• Delete the relevant section from the .gitmodules file.
• Stage the .gitmodules changes git add .gitmodules
• Delete the relevant section from .git/config.
• Run git rm --cached path_to_submodule (no trailing slash).
• Run rm -rf .git/modules/path_to_submodule (no trailing slash).
• Commit git commit -m "Removed submodule "
• Delete the now untracked submodule files rm -rf path_to_submodule

pkazmierczak

import asyncio


@asyncio.coroutine
def factorial(name, number):
    f = 1
    for i in range(2, number + 1):
        print("Task %s: Compute factorial(%d)..." % (name, i))
        yield from asyncio.sleep(1)
        f *= i

taoyuan

# npm using https for git
git config --global url."https://github.com/".insteadOf git@github.com:
git config --global url."https://".insteadOf git://

# npm using git for https
git config --global url."git@github.com:".insteadOf https://github.com/
git config --global url."git://".insteadOf https://

jcberthon

NetworkManager WiFi Power Saving

NetworkManager supports WiFi powersaving but the function is rather undocumented.

From the source code: wifi.powersave can have the following value:

• NM_SETTING_WIRELESS_POWERSAVE_DEFAULT (0): use the default value
• NM_SETTING_WIRELESS_POWERSAVE_IGNORE (1): don't touch existing setting
• NM_SETTING_WIRELESS_POWERSAVE_DISABLE (2): disable powersave

kuba--

git clean -xfd
git submodule foreach --recursive git clean -xfd
git reset --hard
git submodule foreach --recursive git reset --hard
git submodule update --init --recursive

richinseattle

#!/bin/bash

# ext4 disable journal

# Create ext4 fs 
mkfs.ext4 /dev/sda2

# Enable writeback mode. This mode will typically provide the best ext4 performance.
tune2fs -o journal_data_writeback /dev/sda2