Taihsiang Ho tai271828

Ubuntu Auto Install

This allows user to do automated installation of ubuntu. Provided here a a few different files/scripts for making this easier.

I've used this to verify that d-i kernel and initramfs from -proposed work as shown in bug 1511497.

The provided 'preseed' below can be used as a fully automated installation of ubuntu. Boot with qemu like:

note python web server is useful for this (python -m SimpleHTTPServer 9999)

原文 Assembler / なぜx86ではMBRが"0x7C00"にロードされるのか？(完全版)

感謝 descent 大大分享本文，隨便看隨便譯。本文不是逐句譯，同時也不是這方面的專家 (不管是語言或技術)，用語不一或缺漏錯誤在所難免，歡迎自行 fork 修正指教

誰適合看本文?

對 x86 架構與組合語言有基礎認識，以及從 MBR 到載入 OS 這一段過程有興趣的人 (還有談到中斷向量或 INT xxx 時不會一臉茫然的人)

How to use Pelican on GitHub Pages

Author: Josef Jezek

Install on Ubuntu

Installing Python tools

sudo apt-get install python-setuptools

mdadm

Glossary:

md: multiple devices

command	description
`cat /proc/mdstat`	show status of all raids
`mdadm --detail /dev/md0`	detailed status of raid md0

Debugging curtin from within MAAS

Deploying a node with MAAS cli

You can deploy a node with the maas cli which is often preferable to clicking a button on a web UI.

$ SYSTEM_ID=node-787b19d8-d25c-11e4-9f9e-00163eca91de
$ NAME="random-nodename"
$ MAASNAME="maaslocal"

$ maas $MAASNAME machine allocate "name=$NAME"

Making a UEFI bootable iPXE USB drive

Build the UEFI executable for iPXE

# First we'll clone iPXE
$ git clone git://git.ipxe.org/ipxe.git
# Go into the src directory of the cloned git repo
$ cd ipxe/src
# Compile the UEFI iPXE executable

	from __future__ import division
	from numpy.fft import rfft
	from numpy import argmax, mean, diff, log, nonzero
	from scipy.signal import blackmanharris, correlate
	from time import time
	import sys
	try:
	import soundfile as sf
	except ImportError:
	from scikits.audiolab import flacread

	# To check if this is up-to-date with the tax rates go to
	# http://www.expatax.nl/tax-rates-2016.php and see if there's anything
	# newer there.
	#
	# I make no guarantees that any of this is correct. I calculated this
	# at the time and have been updating it when new tax rates come along
	# because people keep finding this useful.
	#
	# There's also an interactive JS version of this created by
	# @stevermeister at

	function load_efi_video {
	set gfxmode=auto
	insmod efi_gop
	insmod efi_uga
	insmod gfxterm
	terminal_output gfxterm
	}

	function load_video {
	set gfxmode=auto

	wget -nc http://ftp.debian.org/debian/dists/jessie/main/installer-amd64/current/images/netboot/debian-installer/amd64/linux
	wget -nc http://ftp.debian.org/debian/dists/jessie/main/installer-amd64/current/images/netboot/debian-installer/amd64/initrd.gz
	cp -nv ~/.ssh/id_rsa.pub .
	qemu-system-x86_64 -machine accel=kvm -kernel linux -initrd initrd.gz -m 1G -smp 2 -append "blacklist=vga16fb fb=false video=false vga=normal auto=true url=http://10.0.2.10:8080/debian-preseed.txt hostname=otto domain=" -net user,guestfwd=:10.0.2.10:8080-cmd:"/bin/busybox httpd -i" -hda /dev/shm/deb.img -net nic -display none