Dev@Free

          zJun's Tech Weblog

          2008年6月3日

          http://ubuntu.dormforce.net/

          Ubuntu 12.04 Precise Pangolin:

          deb http://ubuntu.uestc.edu.cn/ubuntu/ precise main restricted universe multiverse
          deb http://ubuntu.uestc.edu.cn/ubuntu/ precise-backports main restricted universe multiverse
          deb http://ubuntu.uestc.edu.cn/ubuntu/ precise-proposed main restricted universe multiverse
          deb http://ubuntu.uestc.edu.cn/ubuntu/ precise-security main restricted universe multiverse
          deb http://ubuntu.uestc.edu.cn/ubuntu/ precise-updates main restricted universe multiverse
          deb-src http://ubuntu.uestc.edu.cn/ubuntu/ precise main restricted universe multiverse
          deb-src http://ubuntu.uestc.edu.cn/ubuntu/ precise-backports main restricted universe multiverse
          deb-src http://ubuntu.uestc.edu.cn/ubuntu/ precise-proposed main restricted universe multiverse
          deb-src http://ubuntu.uestc.edu.cn/ubuntu/ precise-security main restricted universe multiverse
          deb-src http://ubuntu.uestc.edu.cn/ubuntu/ precise-updates main restricted universe multiverse

          使用說明
          打開Software Manager,點擊Edit⇒Software Sources
          在Download from中選擇Other
          選擇China⇒mirrors.ustc.edu.cn
          點擊Choose Server
          posted @ 2012-06-05 00:55 zJun's帛羅閣 閱讀(1123) | 評論 (0)編輯 收藏
          a wonderful Eclipse plugin:  WindowBuilder, which can be used to develope Swing/SWT UI:

          WindowBuilder is built as a plug-in to Eclipse and the various Eclipse-based IDEs (RAD, RSA, MyEclipse, JBuilder, etc.). The plug-in builds an abstract syntax tree (AST) to navigate the source code and uses GEF to display and manage the visual presentation.

          Develop Java graphical user interfaces in minutes for Swing, SWT, RCP and XWT with WindowBuilder Pro's WYSIWYG, drag-and-drop interface. Use wizards, editors and intelligent layout assist to automatically generate clean Java code, with the visual design and source always in sync.

          The project website: http://www.eclipse.org/windowbuilder/

          To install the plugin in Eclipse: http://www.eclipse.org/windowbuilder/download.php

          posted @ 2012-05-31 18:44 zJun's帛羅閣 閱讀(606) | 評論 (0)編輯 收藏
          Example:
          abc 1000 3452 2463 2343 2176 7654 3452 8765 5643 3452
          abc 1000 3452 2463 2343 2176 7654 3452 8765 5643 3452
          tas 3420 3562 2123 1343 2176 7654 3252 8765 5643 3452
          aer 1000 3452 2463 2343 2176 7654 3452 8765 5643 3452
          tas 3420 3562 2123 1343 2176 7654 3252 8765 5643 3452

          UNIX:

          display the no of occurance and the record
          > sort f1.txt|uniq -c
             2 abc 1000 3452 2463 2343 2176 7654 3452 8765 5643 3452
             1 aer 1000 3452 2463 2343 2176 7654 3452 8765 5643 3452
             2 tas 3420 3562 2123 1343 2176 7654 3252 8765 5643 3452

          display only the duplicate records
          > sort f1.txt|uniq -d
          abc 1000 3452 2463 2343 2176 7654 3452 8765 5643 3452
          tas 3420 3562 2123 1343 2176 7654 3252 8765 5643 3452

          display distinct records
          > sort f1.txt|uniq
          abc 1000 3452 2463 2343 2176 7654 3452 8765 5643 3452
          aer 1000 3452 2463 2343 2176 7654 3452 8765 5643 3452
          tas 3420 3562 2123 1343 2176 7654 3252 8765 5643 3452

          Reference:
          How to find Duplicate Records in a text file
          Shell: How To Remove Duplicate Text Lines

          Windows:

          Notepad++ can sort by line, and remove the duplicate lines at the same time.
          1. Open the menu under: TextFX-->TextFX Tools
          2. Make sure "sort outputs only unique..." is checked
          3. select a block of text (ctrl-a to select the entire document).
          4. click "sort lines case sensitive" or "sort lines case insensitive"

          posted @ 2012-04-11 12:10 zJun's帛羅閣 閱讀(478) | 評論 (0)編輯 收藏

          1.安裝JAVA環境

          sudo apt-get install sun-java5-jre

          2.下載tomcat: http://tomcat.apache.org/

          3.解壓tomcat

          $sudo tar zxvf apache-tomcat-7.0.26.tar.gz -C /opt
          $sudo mv /opt/apache-tomcat-7.0.26.tar.gz /opt/tomcat

          4.啟動tomcat

          $sudo /opt/tomcat/bin/startup.sh

          如果能看到下列提示,就表明啟動成功了!

          >Using CATALINA_BASE: /opt/tomcat
          >Using CATALINA_HOME: /opt/tomcat
          >Using CATALINA_TMPDIR: /opt/tomcat/temp
          >Using JRE_HOME: /usr/lib/j2sdk1.5-sun

          打開Firefox,在地址欄中輸入http://localhost:8080,如果出來Tomcat的缺省界面,說明測試通過!

          5.停止Tomcat服務

          $sudo /opt/tomcat/bin/shutdown.sh

          posted @ 2012-03-28 01:18 zJun's帛羅閣 閱讀(714) | 評論 (0)編輯 收藏
          1.下載安裝 RubyInstaller: http://rubyforge.org/frs/?group_id=167&release_id=46588

          2. 檢查 RubyGems 版本,須高于 1.3.6
          gem -v
          3.如果版本不是最新,可以通過下面的命令更新至最新版本:
          gem update --system
          gem uninstall rubygems-update
          4.安裝 Rails:
          gem install rails
          posted @ 2012-03-27 18:30 zJun's帛羅閣 閱讀(811) | 評論 (0)編輯 收藏
          1.按照github上的指南配置(http://help.github.com/win-set-up-git/)基礎的git環境。

          2.在github上創建一個Repository。

          3.在Eclipse中通過“Eclipse Marketplaces”,在Market Places里安裝egit。

          4.在Eclipse中生public key, 并添加到GitHub Repository中。
          Eclipse中通過:performance -> SSH2 -> Key Management -> Gernerate RSA Key 生成 SSH 的 public key。
          在GitHub中通過:edit your profile -> ssh key -> Add SSH Key 添加SSH Key, 把上面生成的 public key 拷貝到這里,保存。

          5.Eclipse里File菜單,Import,即可從git導入剛添加到git的項目了。

          6.修改,并提交。在項目上點右鍵–>team–>commit。commit是commit到本機的git庫,而push才是同步到github。
          posted @ 2012-03-27 01:16 zJun's帛羅閣 閱讀(3020) | 評論 (0)編輯 收藏
          1.下載最新版 Eclipse:
          官方下載:http://www.eclipse.org/downloads/

          2.解壓下載的壓縮包:
          $sudo tar xvfz eclipse-SDK-3.1.2-linux-gtk.tar.gz -C /opt

          這個時候,就可以在 /opt 文件夾中看到出現了一個eclipse的文件夾,雙擊其中的eclipse文件就可以運行eclipse了。

          3.在菜單設置Eclipse選項:
          $gedit ~/.local/share/applications/eclipse-user.desktop

          插入一下內容:
          [Desktop Entry]
          Comment=Java IDE
          Name=Eclipse
          Exec=/opt/eclipse/eclipse
          Encoding=UTF-8
          Terminal=false
          Type=Application
          Categories=Application;Development;
          Icon=/opt/eclipse/icon.xpm

          posted @ 2012-03-27 01:00 zJun's帛羅閣 閱讀(647) | 評論 (0)編輯 收藏

          方法1: 用SET PASSWORD命令

            mysql -u root

            mysql> SET PASSWORD FOR 'root'@'localhost' = PASSWORD('newpass');

          方法2:用mysqladmin

            mysqladmin -u root password "newpass"

            如果root已經設置過密碼,采用如下方法

            mysqladmin -u root password oldpass "newpass"

          方法3: 用UPDATE直接編輯user表

            mysql -u root

            mysql> use mysql;

            mysql> UPDATE user SET Password = PASSWORD('newpass') WHERE user = 'root';

            mysql> FLUSH PRIVILEGES;

          方法4: 在丟失root密碼的時候,可以這樣

            mysqld_safe --skip-grant-tables&

            mysql -u root mysql

            mysql> UPDATE user SET password=PASSWORD("new password") WHERE user='root';

            mysql> FLUSH PRIVILEGES;

          ---------------------------------------

          經測試,方法三修改成功,其他三種方法沒有測試。

          posted @ 2012-03-17 22:53 zJun's帛羅閣 閱讀(518) | 評論 (0)編輯 收藏

          一.問題環境:
            Eclipse3.4 + Tomcat6.0.20
          二.問題現象:
            在Eclipse下啟動Tomcat6時,控制臺會有下面警告信息
            警告: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:...' did not find a matching property.
          三.詳細解決辦法:
             1.打開服務器視圖:窗口 > 顯示視圖 > 服務器 > 服務器
             2.雙擊服務器列表中的Tomcat,打開“服務器概述”窗口
             3.選中"Publish module contexts to separate XML files"選項。
             小提示:如果Tomcat處于啟動狀態,請先停止,否則,在保存服務器設置時,提示不能保存。

          posted @ 2012-03-17 22:52 zJun's帛羅閣 閱讀(855) | 評論 (0)編輯 收藏

          Here is a simple way to generate a analyze report by using FindBugs plugins in RSA:

          • Using FindBugs to scan the code and save the result as XML file
          • the XML report is in a bad format for reading, we can use XSL file to make it easy and clear to read:
          <?xml version="1.0" encoding="UTF-8"?>
          <?xml-stylesheet type="text/xsl" href="summary.xsl"?>
          • Use Internet Explore to open the XML report, now we get a report:
          Note: FindBugs provided following xsl files for different format:

          1、default.xsl;
          2、fancy.xsl;
          3、fancy-hist.xsl;
          4、plain.xsl;
          5、summary.xsl;

          posted @ 2012-03-17 22:46 zJun's帛羅閣 閱讀(463) | 評論 (0)編輯 收藏
               摘要: GZIP
          1. Compressing a File in the GZIP Format
          2. Uncompressing a File in the GZIP Format

          ZIP
          1. Creating a ZIP File
          2. Listing the Contents of a ZIP File
          3. Retrieving a Compressed File from a ZIP File   閱讀全文
          posted @ 2008-06-03 23:02 zJun's帛羅閣 閱讀(1356) | 評論 (1)編輯 收藏

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