2012-10-08

杂记 20121008 | Misc Notes 20121008

1. 添加新的MANPATH的正确方法
MANPATH=NEWPATH:$(manpath)

2. 如果DOCTYPE前面有注释,IE9就会进入暴走模式
感谢W3C Validator
3. 删除远端git分支
git push origin :1234

4. 删除远端git标签
git push origin :refs/tags/1234



1. The correct way to add a new MANPATH:
MANPATH=NEWPATH:$(manpath)
From http://ubuntuforums.org/showthread.php?t=1180950

2. IE9 would go into the quirks mode, if there is any comment before DOCTYPE
Thanks to W3C Validator

3. To remove a remote git branch:
git push origin :1234

4. To remove a remote git tag:
git push origin :refs/tags/1234

2012-08-21

pdf2htmlEX 一个pdf至html的转换工具 | pdf2htmlEX: A pdf to html converter

最近在写一个玩具,pdf到html的转换器

主页
http://coolwanglu.github.com/pdf2htmlEX

演示
http://coolwanglu.github.com/pdf2htmlEX/demo/demo.html

有很多feature,主要针对学术论文进行优化

详情请参阅项目页面


Recently I've been working on a 'toy' called pdf2htmlEX, which is a pdf to html converter.
 
Homepage
http://coolwanglu.github.com/pdf2htmlEX

Demo
http://coolwanglu.github.com/pdf2htmlEX/demo/demo.html

There are many featuers, and the tool is optimized for scientific papers.

Please find more details in the home page.

杂记 20120820 | Misc Notes 20120820

1. ifuse & ideviceinstaller 可以很好的查看和管理iOS的程序和目录,比windows方便多了。

2. c:\users\USERNAME\appdata\local\vitualstore\program files (x86)\ 是对Program Files的虚拟映射。有的程序会试图在自己安装目录写入文件,但是win7中普通用户没有权限,所以大概是为了兼容搞了这么个目录

3. ssh-keygen -l  查看自己的fingerprint

4. testdisk 一个非常强劲的磁盘工具。之前我的硬盘分区表乱掉了就是用这个工具复活的。

5. chrome某个版本显示中文句号只能显示一半。一个临时办法是放大到110%




1. ifuse & ideviceinstaller are great tools managing Apps and folders of iOS devices, which are much convenient than accessing them in Windows.

2. c:\users\USERNAME\appdata\local\vitualstore\program files (x86)\ is a virtual mapping to the "program files" folders. In Win 7, a program run as a normal user cannot write to its installation folder, but probably for compatibility, this virtual folder is provided.

3. ssh-keygen -l : to view the fingerprint of your ssh keys

4. testdisk is a very powerful tool for hard drive. Last time I messes up the partition table of my hard drive, and then fixed it using this tool

5. In some version of Chrome, the period symbol in Chinese cannot be displayed correctly. A workaround is to zoom in to 110%.

2012-04-29

VNC服务器在开启compiz时不工作 | VNC server won't work with compiz

症状是VNC远程连接后,画面显示一帧就不再刷新了
(但是鼠标键盘在本机好像是有响应的)

以前讨论过这个问题
http://coolwanglu.blogspot.com/2011/01/compizfglrxvnc-problem-of-vnc-server.html

今天再次遇到了,只是现在我的电脑是ATI的卡
vino不太好用,用x11vnc的时候出现消息

29/04/2012 21:14:17 XDAMAGE is not working well... misses: 166/216
29/04/2012 21:14:17 Maybe an OpenGL app like Beryl or Compiz is the problem?
29/04/2012 21:14:17 Use x11vnc -noxdamage or disable the Beryl/Compiz app.
29/04/2012 21:14:17 To disable this check and warning specify -xdamage twice.

用 x11vnc -noxdamage -once -display :0 可以正常使用,但是由于不是增量显示的,网络压力会很大


https://bugs.launchpad.net/ubuntu/+source/fglrx-installer/+bug/772873
看到一个 workaround
是说在ATI Catalyst Control Center (Administrative)里打开 tear free 这个选项

我试了一下,果然管用。
以后不用-noxdamage也能正常使用了

另外-once这个选项太好用了


 The symptom is after a successful vnc connection, the window stopped refreshing after the first frame.
(But the keyboard and mouse seems to be responded on the remote machine)

I've discussed about the problem before:
http://coolwanglu.blogspot.com/2011/01/compizfglrxvnc-problem-of-vnc-server.html

Today I encountered this problem again when I tried to connect to my machine, but now I'm using an ATI graphics card.
vino server is not quite handy, so I used x11vnc, and I saw some useful logs:


29/04/2012 21:14:17 XDAMAGE is not working well... misses: 166/216
29/04/2012 21:14:17 Maybe an OpenGL app like Beryl or Compiz is the problem?
29/04/2012 21:14:17 Use x11vnc -noxdamage or disable the Beryl/Compiz app.
29/04/2012 21:14:17 To disable this check and warning specify -xdamage twice.

I can access my machine with 'x11vnc -noxdamage -once -display :0' without any problem, but now the screen is no longer updated incrementally, so it would hammer the network.

Then I found a workaround at:
https://bugs.launchpad.net/ubuntu/+source/fglrx-installer/+bug/772873

It says to enable the 'tear free' option in the ATI Catalyst Control Center (Administrative)

I tried, and it really worked!
Then it still works without the '-noxdamage' option

BTW, I really like the '-once' option.



2012-04-28

杂记 20120428 | Misc Notes 20120428


1. Google Chrome 强制开启GPU加速
google-chrome --ignore-gpu-blacklist

2. 删除不用的locale
安装localepurge

3. 带电源的外置硬盘不能识别

dmesg显示错误信息
device not accepting address NN, error -110
device descriptor read/64, error -110
unable to enumerate USB device on port N

参见
http://www.noah.org/wiki/USB_error_-110_in_dmesg_log
https://bugs.launchpad.net/ubuntu/+source/linux-source-2.6.15/+bug/54273

切断硬盘电源,等几秒后重新连接得以解决


1. To force enable GPU acceleration of Google Chrome
google-chrome --ignore-gpu-blacklist

2. To remove redundant locale files
Install localepurge

3. An external hard drive with it own power cannot be recognized

Messages shown in dmesg
device not accepting address NN, error -110
device descriptor read/64, error -110
unable to enumerate USB device on port N

See
http://www.noah.org/wiki/USB_error_-110_in_dmesg_log
https://bugs.launchpad.net/ubuntu/+source/linux-source-2.6.15/+bug/54273

Power off the hard drive and wait for a few seconds.
Then reconnect everything and it works well.

2012-01-07

杂记 20120107 | Misc Notes 20120107

1. 让c#程序崩溃时的堆栈信息显示行号: 把相应的pdb文件放到同一目录

2. Ubuntu 莫名启动慢,硬盘无反应
我的原因是这个https://bugs.launchpad.net/ubuntu/+source/upstart/+bug/839595
需要在 /etc/network/interfaces 文件中删除 "auto eth0"

3 .Firefox 词典插件推荐 Dictionary Tooltip。配合我常用的dict.cn效果不错
参数
site url: http://dict.cn/mini.php?q=$$
scroll to element: word-key

4. Firefox 显示 MathML 最好安装 STIX 字体, 另推荐安装 Asana 字体

5. gnome-raw-thumbnailer 不能给 Nautilus 正确创建缩略图:
根据 https://bugs.launchpad.net/ubuntu/+source/gnome-raw-thumbnailer/+bug/852923
添加/修改文件 /usr/share/thumbnailers/raw.thumbnailer 为

[Thumbnailer Entry]
Exec=/usr/bin/gnome-raw-thumbnailer -s %s %u %o
MimeType=image/x-canon-cr2;


按自己需要另添加 MimeType 进去

6.GMail 的 Preview Pane 右边阅读区域过于狭窄
在AdBlock里添加规则
mail.google.com##.Bu:last-child

推荐使用 Element Hiding Helper



1. To show line numbers in the backtrace when a C# program crashes: put the corresponding pdb file into the same directory.

2. Ubuntu starts very slow, and seems that it's not working, but simply waiting
My issue is decribed here: https://bugs.launchpad.net/ubuntu/+source/upstart/+bug/839595
Just delete "auto eth0" from the file /etc/network/interfaces

3. Recommended dictionary add-on for Firefox: Dictionary Tooltip, which works perfect with my favorite dict.cn
Parameters
site url: http://dict.cn/mini.php?q=$$
scroll to element: word-key

4. To get a best view of MathML in Firefox, it's recommended to install the STIX font, and Asana font as well.

5. gnome-raw-thumbnailer cannot create thumbnails for Nautilus
According to https://bugs.launchpad.net/ubuntu/+source/gnome-raw-thumbnailer/+bug/852923
Create/Modify /usr/share/thumbnailers/raw.thumbnailer as

[Thumbnailer Entry]
Exec=/usr/bin/gnome-raw-thumbnailer -s %s %u %o
MimeType=image/x-canon-cr2;


Also include all other necessary MimeTypes

6.The reading pane from the "Preview Pane" in Gmail is too narrow
Add the following rule to AdBlock
mail.google.com##.Bu:last-child

Recommend to use Element Hiding Helper