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server {
    server_name     $domain_name;
    root            /var/www;
    index           index.html index.php;
    access_log      /var/log/nginx/access.log;
    error_log       /var/log/nginx/error.log;

    # Cache static files for as long as possible
    location ~* \.(?:xml|ogg|mp3|mp4|ogv|svg|svgz|eot|otf|woff|ttf|css|js|jpg|jpeg|gif|png|ico)$ {
            try_files $uri =404;

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html, body {
    height:100%;
}

#container {
    height:100%;
    overflow: hidden;
    display: table;
}

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// assumes your viewport meta tag has an id set to "viewport" - e.g.:
// <meta name="viewport" id="viewport" content="initial-scale=1,maximum-scale=1,minimum-scale=1,user-scalable=no,width=device-width">
(function(doc, nav) {
  var ua = nav.userAgent.toLowerCase();
  !ua || ua.match(/iphone|ipod/) && ((ua = ua.match(/cpu (?:\w+ )?os (\d+)_?(\d+)?/)) && ((7 < ua[1] || 7 == ua[1] && (ua[2] && 0 < ua[2])) && (doc.getElementById("viewport").content += ",minimal-ui")));
})(document, window.navigator);

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Stale ODEX dependencies cause unbootable Android

This document is based on the code of Android 4.1.1_r6.1 (Jelly Bean).

Suppose that you want to customiz your android system, you may want to modify /system/framework/framework.jar (source files are in the directory frameworks/base). During development, let's assume that you just did a full build, and you decide to make some changes to some source files. After that, you want to build again. Ideally, the building system can correctly re-build everything that is dependent on the changes you just made. However, seems that the android building system does not do it properly. You will get an unbootable image caused by mismatched dex signature. If you check the log when system boots, you will see an error message like the following:

07-30 06:50:56.042: I/dalvikvm(393): DexOpt: mismatch dep signature for '/system/framework/framework.odex'
07-30 06:50:56.042: E/dalvikvm(393): /system/framework/apache-xml.jar odex has stale dependencies

The reason is

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/* ---------------------------------------------------------- */
/*                                                            */
/* A media query that captures:                               */
/*                                                            */
/* - Retina iOS devices                                       */
/* - Retina Macs running Safari                               */
/* - High DPI Windows PCs running IE 8 and above              */
/* - Low DPI Windows PCs running IE, zoomed in                */
/* - Low DPI Windows PCs and Macs running Firefox, zoomed in  */
/* - Android hdpi devices and above                           */

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B4CUNG
                         _.                                     
                       =?V#(..____aa, .|*!S>                    
                        :.:;=;=QQQQB`==:...:                    
                        .=;;;:jQQQQf;=;;===:.                   
                         =;;;:mQQQQ=;;;;;:;;.                   
                        .=;;;<QQQQW:;;;;;;=w,                   
                       ./=;;:dQQQQ#:;;;;;:yQ[                   
                       .m:;;=QQQQQm:;;;;=mQQL.                  
                       )W;=;)QQQQQQ;=;;:mQQW'.                  

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    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"></uses-permission>
    <uses-permission android:name="android.permission.INTERNET"></uses-permission>

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Return-Path: direkt@postbank.de
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From: "Postbank" <direkt@postbank.de>
Subject: Liebe Postbank Kunden, Ihr Handeln ist gefragt!
To: "OriginalRecipient@gmx.de" <OriginalRecipient@gmx.de>
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MIME-Version: 1.0
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eyecatchup

Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000

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#!/bin/sh
#######################################################
#  UNIX TREE                                          #
#  Version: 2.3                                       #
#  File: ~/apps/tree/tree.sh                          #
#                                                     #
#  Displays Structure of Directory Hierarchy          #
#  -------------------------------------------------  #
#  This tiny script uses "ls", "grep", and "sed"      #
#  in a single command to show the nesting of         #