ShawnHuang

#Computers

“Computers are useless. They can only give you answers.” (Pablo Picasso)

“Computers are like bikinis. They save people a lot of guesswork.” (Sam Ewing)

“They have computers, and they may have other weapons of mass destruction.” (Janet Reno)

ShawnHuang

#HOW-TO: Virtualize Raspian with Qemu

0.Workspace

mkdir -p ~/workspace/raspdev
cd ~/workspace/raspdev

1.Install Qemu

ShawnHuang

imap jj <esc>

ShawnHuang

https://superuser.com/questions/1027957/zsh-change-prompt-just-before-command-is-run
https://gist.github.com/PaulCapestany/4736311#file-oh-my-zsh-prompt

ShawnHuang

$ \curl -sSL https://get.rvm.io | bash
$ source /home/<user>/.rvm/scripts/rvm
$ rvm -v
$ rvm install ruby
$ ruby -v
$ sudo apt-get install rubygems
$ gem update
$ sudo apt-get install ruby-dev zlib1g-dev liblzma-dev build-essential patch

ShawnHuang

    print("─────────────────────────▄▀▄")
    print("─────────────────────────█─█")
    print("─────────────────────────█─█")
    print("─────────────────────────█─█")
    print("─────────────────────────█─█")
    print("─────────────────────────█─█")
    print("─────────────────────────█─▀█▀█▄")
    print("─────────────────────────█──█──█")
    print("─────────────────────────█▄▄█──▀█")
    print("────────────────────────▄█──▄█▄─▀█")

ShawnHuang

#!/bin/ksh

typeset port=$((RANDOM % 60000))
while ((port < 30000)); do
    port=$((RANDOM % 60000))
done

typeset pipe=`mktemp -u`
mkfifo $pipe
trap "rm -f $pipe" INT

ShawnHuang

UFW

I use Ubuntu’s Uncomplicated firewall because it is available on Ubuntu and it's very simple.

Install UFW

if ufw is not installed by default be sure to install it first.

ShawnHuang

function string.fromhex(str)
    return (str:gsub('..', function (cc)
        return string.char(tonumber(cc, 16))
    end))
end

function string.tohex(str)
    return (str:gsub('.', function (c)
        return string.format('%02X', string.byte(c))
    end))

ShawnHuang

http://stackoverflow.com/questions/2016404/git-status-shows-modifications-git-checkout-file-doesnt-remove-them