Using Beyond compare3 as Git diff tool under Cygwin

在Cygwin下使用Beyond compare3(BC3)作用Git的diff工具
分两步走~


step 1.
create new .sh file as Git's diff warpper.

#!/bin/sh
/cygdrive/c/Program\ Files\ \(x86\)/Beyond\ Compare\ 3/BCompare.exe "d:/programs/cygwin$2" "$5"

** please notice here, you need specially make a full path of $2, since BC3 will not find your tmp file under Cygwin path. **
** 注意这里的两个路径，第二个是本地文件，因为是相对路径，BC3可以找到，但第一个是绝对路径指向/tmp/xxx，所以我们要特别指定在windows下的真实路径，而不是cygwin的路径，所以我加上了d:/programs/cygwin。

step 2.
Add this line to .bashrc and run it to configure your Git gloabl variable.

git config --global diff.external /home/z33/git-diff-wrapper.sh

Now you can try git diff whatever your file.

Wordpress hack tips - Add tags to static pages

I did a lot of wordpress plugin jobs recently. But sometimes clients are not satisfied with what plugins can do. for example there is a client of mine want add tags to any static pages, just like wordpress posts did.

Actually it's very easy to do this(as well as to create a plugin for this).
just paste following lines to page_attributes_meta_bos function in meta-boxes.php:

<h5>Tags</h5>
<div>
<input type="text" name="tags_input" class="tags-input" id="tags-input" size="30" tabindex="3" value="<?php echo get_tags_to_edit( $post->ID ); ?>" />
</div>

The most easy way to install geoip php extension note

在网上找了一堆安装geo ip模块的方法，各种方法都很麻烦。现在本尊(无量牛逼最三三尊)来整理一个最简单的安装方法如下。

1.install GEOIP C Library
http://geolite.maxmind.com/download/geoip/api/c/GeoIP-1.4.6.tar.gz
./configure
make
sudo make install

2.Install GEOIP PHP Extension
sudo pecl install geoip

3.Following message from step2, for example:
Build process completed successfully
Installing '/usr/local/lib/php/20060613/geoip.so'
install ok: channel://pecl.php.net/geoip-1.0.7
configuration option "php_ini" is not set to php.ini location
You should add "extension=geoip.so" to php.ini

4.Install GeoIP database
wget http://geolite.maxmind.com/download/geoip/database/GeoLiteCountry/GeoIP.dat.gz
gzip -d GeoIP.dat.gz
sudo cp GeoIP.dat /usr/local/share/GeoIP/
wget http://geolite.maxmind.com/download/geoip/database/GeoLiteCity.dat.gz
sudo cp GeoLiteCity.dat /usr/local/share/GeoIP/GeoLiteCity.dat
sudo mv /usr/local/share/GeoIP/GeoLiteCity.dat /usr/local/share/GeoIP/GeoIPCity.dat

5.test
<?php print_r(geoip_record_by_name('125.63.166.38'));

这两天遇到的某些国内discuz论坛输出的RSS问题解决。

主要遇到了两个问题。
1.GBK编码问题
如果RSS输出是gbk编码，Zend_Feed可以处理（不过会有些警告）。而Simplepie则全部处理成乱码了。
解决这个问题只能是把gbk当成gb2312来处理。

$content = str_replace('encoding="gbk"', 'encoding="gb2312"', $content);

2.半个汉字，或非gb2312内的字符在第一或最后一个的时候，CDATA标签无法识别（Zend_Feed和SimplePie都不行）。
解决办法就是在CDATA与字符之间加一个空格。

$content = preg_replace('/\]\]\>/', ' ]]>', $content);
$content = preg_replace('/\<\!\[CDATA\[/', '<![CDATA[ ', $content);

Version Control with Git 学习笔记(更新中)

1.当git checkout的时候，如果有一个文件名和一个tag重名，可以用两个中线来指定文件名，比如：

$git checkout main.c  //checkout tag name
$git checkout -- main.c  //checkout file name

2.指定log编辑器

setenv GIT_EDITOR vim  //tch
export GIT_EDITOR=vim //bash

3.--author when met some wired message :P

4.比较两个版本
git log
git diff 0f793b8262cbd843e8ad7c75430aab7bebc6522d^1..HEAD wp-content/themes/bugbam/header.php

5.diff stat
git diff master~5 master

dante server INSTALL note

1. install dante server

sudo apt-get install dante-server

skip the error message from the output of configure dante-server once installed. that's cause dante configuration was not complete.

2. start editing the config file

vi /etc/danted.conf

--
# log to what file
logoutput: stderr /var/log/danted.log

# listening interface and port
internal: ppp0 port = 80

# outgoing interface
external: ppp0

# method: username requires the client to provide a username and password which match the system password file.

# method: none requires no form of authentication.
method: username

# privileged ports like 80 and 443 must use root permission.
user.privileged: root

# the package seems not complied with libwrap support.
#user.libwrap: nobody

# allowed IPs
client pass {
from: 0.0.0.0/0 to: 0.0.0.0/0
}

# allowed protocols with these source IPs
pass {
from: 0.0.0.0/0 to: 0.0.0.0/0
protocol: tcp udp
}

3. run dante-server

sudo /etc/init.d/danted start

Change Joomla default meta info in a Component

In the templates of Component, in view.html.php before display() be called. add following line:

$document =& JFactory::getDocument();
$document->setDescription('you description');
$document->setMetaData('keywords', 'you keywords');