eof.php

<?php

// se o arquivo não pode ser lido ou nao existe a função fopen retorna FALSE
$file = @fopen($argv[1], "r");

$ca = '';
// FALSE a partir do fopen irá causar um warning(aviso) e resultar em um loop infinito aqui
do {
  $c = fgetc($file);
  if($c === false) break;
  $ca = $c;
} while (!feof($file));

fclose($file);

if($ca == "\n")
  exit(0);
else
  exit(1);

?>

gistfile1.sh

alexandre$ find -type f | grep -v ".git\/" | xargs -n1 | xargs -I@ bash -c "php eof.php @ || echo @"
./.gitignore
./themes/bootstrap/README.md
./themes/bootstrap/assets/img/glyphicons-halflings-white.png
./themes/bootstrap/assets/img/glyphicons-halflings.png
./themes/bootstrap/assets/js/bootstrap.min.js
./themes/bootstrap/assets/.DS_Store
./themes/index.html
./themes/default/scripts/modernizr-2.6.1.min.js
./changelog.txt
./plugins/index.html
./vendor/index.html
./vendor/heroku/heroku-buildpack-php/.gitignore
./vendor/heroku/heroku-buildpack-php/conf/php/conf.d/ext-mongo.ini
./vendor/heroku/heroku-buildpack-php/conf/php/conf.d/ext-apcu.ini
./vendor/heroku/heroku-buildpack-php/conf/php/conf.d/ext-memcached.ini
./vendor/heroku/heroku-buildpack-php/conf/php/conf.d/ext-redis.ini
./vendor/heroku/heroku-buildpack-php/conf/php/conf.d/ext-imagick.ini
./vendor/heroku/heroku-buildpack-php/conf/nginx/heroku.conf.php
./vendor/heroku/heroku-buildpack-php/LICENSE
./vendor/heroku/heroku-buildpack-php/requirements.txt
./vendor/heroku/heroku-buildpack-php/bin/common.sh
./vendor/michelf/php-markdown/Michelf/Markdown.php
./vendor/michelf/php-markdown/Michelf/MarkdownExtra.php
./license.txt
./content/index.html
./content/404.md
./content/sub/index.md
./content/sub/page.md
./teste.txt
./lib/index.html
./composer.phar
alexandre$ 

gistfile2.sh

alexandre$ echo >> ./content/index.html 
alexandre$ echo >> ./content/404.md 
alexandre$ echo >> ./content/sub/index.md 
alexandre$ echo >> ./content/sub/page.md 
alexandre$ git diff