2013-01-30

從 PDF 抽出圖檔

• [參考] ​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] ​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]

  ### 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