= 2013-01-30 =

== 從 PDF 抽出圖檔 ==

 * [參考] [http://ubuntugenius.wordpress.com/2012/02/04/how-to-extract-images-from-pdf-documents-in-ubuntulinux/ How to Extract Images from PDF Documents in Ubuntu/Linux]
{{{
~$ sudo apt-get install poppler-utils
## pdfimages -j '來源.pdf' 圖檔命名-prefix
~$ pdfimages -j 'Cool Pix of 2011.pdf' cool2011
}}}

== Apache !BigTop ==

 * [參考] [https://cwiki.apache.org/confluence/display/BIGTOP/How+to+install+Hadoop+distribution+from+Bigtop+0.5.0 How to install Hadoop distribution from Bigtop 0.5.0]
 * [測試環境] http://easycloud.nchc.org.tw
{{{
root@vm36:~# lsb_release -a
No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu 12.04.1 LTS
Release:	12.04
Codename:	precise
root@vm36:~# uname -a
Linux vm36 3.2.0-29-generic #46-Ubuntu SMP Fri Jul 27 17:03:23 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
}}}
 * [注意] 官方說__'''只有支援 64 位元版本'''__
 * [步驟]
{{{
#!sh
### 首先，在 EasyCloud 的 VM 切換成 root 會比較方便。
jazzwang.tw@vm36:~$ su -
### 其次，加入 BigTop 的套件金鑰，跟套件庫來源
root@vm36:~# wget -O- http://archive.apache.org/dist/bigtop/bigtop-0.5.0/repos/GPG-KEY-bigtop | apt-key add -
root@vm36:~# wget -O /etc/apt/sources.list.d/bigtop-0.5.0.list http://archive.apache.org/dist/bigtop/bigtop-0.5.0/repos/`lsb_release --codename --short`/bigtop.list
### 更新套件庫
root@vm36:~# apt-get update
### 安裝 BigTop Utility
root@vm36:~# apt-get install bigtop-utils
### 安裝 Oracle Java Runtime and JDK
root@vm36:~# if [ ! -x /usr/bin/add-apt-repository ]; then
   sudo apt-get -f -y install python-software-properties
 fi
root@vm36:~# if [ ! -x /usr/bin/java ]; then
   echo "---- [1] Installing Sun Java JDK 6 ........ ----"
   sudo add-apt-repository -y 'deb http://free.nchc.org.tw/debian stable non-free'
   sudo apt-get update
   cat << EOF | sudo /usr/bin/debconf-set-selections
 sun-java6-bin   shared/accepted-sun-dlj-v1-1    select true
 sun-java6-jdk   shared/accepted-sun-dlj-v1-1    select true
 sun-java6-jre   shared/accepted-sun-dlj-v1-1    select true
 EOF
   sudo apt-get -y --force-yes install sun-java6-jdk sun-java6-plugin
   sudo add-apt-repository -r 'deb http://free.nchc.org.tw/debian stable non-free'
 fi
}}}