当我安装 elasticsearch debian 包时，文件被复制到我系统中的各个文件夹中，并且启动了 elasticsearch 服务器。
这是怎么发生的？.deb 包中的哪些文件包含所有这些安装信息？
当我查看包时，我看到以下文件：
➜ downloads dpkg-deb -c elasticsearch-0.90.2.deb
drwxr-xr-x root/root 0 2013-06-26 08:56 ./usr/
drwxr-xr-x root/root 0 2013-06-26 08:56 ./usr/share/
drwxr-xr-x root/root 0 2013-06-26 08:56 ./usr/share/elasticsearch/
-rw-r--r-- root/root 165 2013-06-26 08:56 ./usr/share/elasticsearch/NOTICE.txt
-rw-r--r-- root/root 7942 2013-06-26 08:56 ./usr/share/elasticsearch/README.textile
-rw-r--r-- root/root 2031 2013-06-26 08:56 ./usr/share/elasticsearch/core-signatures.txt
drwxr-xr-x root/root 0 2013-06-26 08:56 ./usr/share/elasticsearch/bin/
-rwxr-xr-x root/root 5511 2013-06-26 08:56 ./usr/share/elasticsearch/bin/elasticsearch
-rwxr-xr-x root/root 2099 2013-06-26 08:56 ./usr/share/elasticsearch/bin/elasticsearch.in.sh
-rwxr-xr-x root/root 740 2013-06-26 08:56 ./usr/share/elasticsearch/bin/plugin
drwxr-xr-x root/root 0 2013-06-26 08:56 ./usr/share/elasticsearch/lib/
-rw-r--r-- root/root 11000124 2013-06-26 08:56 ./usr/share/elasticsearch/lib/elasticsearch-0.90.2.jar
drwxr-xr-x root/root 0 2013-06-26 08:56 ./usr/share/elasticsearch/lib/sigar/
-rw-r--r-- root/root 246605 2013-06-26 08:56 ./usr/share/elasticsearch/lib/sigar/libsigar-amd64-linux.so
-rw-r--r-- root/root 494929 2013-06-26 08:56 ./usr/share/elasticsearch/lib/sigar/libsigar-ia64-linux.so
-rw-r--r-- root/root 233385 2013-06-26 08:56 ./usr/share/elasticsearch/lib/sigar/libsigar-x86-linux.so
-rw-r--r-- root/root 428580 2013-06-26 08:56 ./usr/share/elasticsearch/lib/sigar/sigar-1.6.4.jar
-rw-r--r-- root/root 865400 2013-06-26 08:56 ./usr/share/elasticsearch/lib/jna-3.3.0.jar
-rw-r--r-- root/root 770462 2013-06-26 08:56 ./usr/share/elasticsearch/lib/jts-1.12.jar
-rw-r--r-- root/root 489884 2013-06-26 08:56 ./usr/share/elasticsearch/lib/log4j-1.2.17.jar
-rw-r--r-- root/root 1563004 2013-06-26 08:56 ./usr/share/elasticsearch/lib/lucene-analyzers-common-4.3.1.jar
-rw-r--r-- root/root 296563 2013-06-26 08:56 ./usr/share/elasticsearch/lib/lucene-codecs-4.3.1.jar
-rw-r--r-- root/root 2213537 2013-06-26 08:56 ./usr/share/elasticsearch/lib/lucene-core-4.3.1.jar
-rw-r--r-- root/root 107736 2013-06-26 08:56 ./usr/share/elasticsearch/lib/lucene-grouping-4.3.1.jar
-rw-r--r-- root/root 123614 2013-06-26 08:56 ./usr/share/elasticsearch/lib/lucene-highlighter-4.3.1.jar
-rw-r--r-- root/root 63680 2013-06-26 08:56 ./usr/share/elasticsearch/lib/lucene-join-4.3.1.jar
-rw-r--r-- root/root 35907 2013-06-26 08:56 ./usr/share/elasticsearch/lib/lucene-memory-4.3.1.jar
-rw-r--r-- root/root 202556 2013-06-26 08:56 ./usr/share/elasticsearch/lib/lucene-queries-4.3.1.jar
-rw-r--r-- root/root 385813 2013-06-26 08:56 ./usr/share/elasticsearch/lib/lucene-queryparser-4.3.1.jar
-rw-r--r-- root/root 45506 2013-06-26 08:56 ./usr/share/elasticsearch/lib/lucene-sandbox-4.3.1.jar
-rw-r--r-- root/root 92692 2013-06-26 08:56 ./usr/share/elasticsearch/lib/lucene-spatial-4.3.1.jar
-rw-r--r-- root/root 142268 2013-06-26 08:56 ./usr/share/elasticsearch/lib/lucene-suggest-4.3.1.jar
-rw-r--r-- root/root 69290 2013-06-26 08:56 ./usr/share/elasticsearch/lib/spatial4j-0.3.jar
drwxr-xr-x root/root 0 2013-06-26 08:56 ./etc/
drwxr-xr-x root/root 0 2013-06-26 08:56 ./etc/default/
-rw-r--r-- root/root 890 2013-06-26 08:56 ./etc/default/elasticsearch
drwxr-xr-x root/root 0 2013-06-26 08:56 ./etc/init.d/
-rwxr-xr-x root/root 5469 2013-06-26 08:56 ./etc/init.d/elasticsearch
drwxr-xr-x root/root 0 2013-06-26 08:56 ./etc/elasticsearch/
-rw-r--r-- root/root 12519 2013-06-26 08:56 ./etc/elasticsearch/elasticsearch.yml
-rw-r--r-- root/root 1380 2013-06-26 08:56 ./etc/elasticsearch/logging.yml
drwxr-xr-x root/root 0 2013-06-26 08:56 ./usr/share/lintian/
drwxr-xr-x root/root 0 2013-06-26 08:56 ./usr/share/lintian/overrides/
-rw-r--r-- root/root 482 2013-06-26 08:56 ./usr/share/lintian/overrides/elasticsearch
drwxr-xr-x root/root 0 2013-06-26 08:56 ./usr/share/doc/
drwxr-xr-x root/root 0 2013-06-26 08:56 ./usr/share/doc/elasticsearch/
-rw-r--r-- root/root 741 2013-06-26 08:56 ./usr/share/doc/elasticsearch/copyright