Category: Uncategorized

Is is real Buddha photo? He looks like a Chinese

I don’t think Buddha looks like a Chinese instead of an Indian 🙂


2018/05/21 0

The hard part of developing assembler

One of the hardest part of developing assembler is to make your grammar correctly display the error message and pointing to the correct token.


2018/04/28 0

Netbeans outline plugin can parse antlr4 and cpp file

Netbeans outline plugin can parse antlr4 and cpp file now. Just press ‘ctrl+p’, it will be popup.  


2018/04/15 0

I am better to embed all testing assembly instruction in the antlr listener

I am better to embed all testing assembly instruction in the antlr listener rather than finding a way to embed them into the antlr grammar, because: Using parser of parser skill set to write a parser to parse antlr grammar and extract the testing asm instruction is too risky. One day the antlr grammar will…
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2018/02/28 0

Solved: Error while finding module specification for ‘azure.cli’ (ModuleNotFoundError: No module named ‘azure’)

when you have the follow error when running azure-cli az command: /Users/peter/lib/azure-cli/bin/python: Error while finding module specification for ‘azure.cli’ (ModuleNotFoundError: No module named ‘azure’) Just run directly


2017/12/10 0

Display gitlab projects in your wordpress page

It seems there is no plugin to display a project list of your gitlab, so do this Step 1) Install this plugin Step 2) Generate a access token in your gitlab https://docs.gitlab.com/ce/user/profile/personal_access_tokens.html Step 3) Paste the token in to line 4 below Step 4) Paste the these code https://gitlab.com/snippets/1686114 into your page Step 5) For the…
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2017/11/25 0

I got over 2000 commits to open source projects

My github account is destroyed by a crazy Christian. I got over 2000 commits to open source projects, and 669 commits in last year. These screens are the only prove of my contribution now.


2017/11/25 0

Professor Terence Parr replied

Professor Terence Parr (Antlr creator) replied, this is a major different between foreigner professor and Hong Kong professor. Professor from Hong Kong never reply any technical question from public.


2017/09/19 0

linux elf dependency graph

linux elf dependency graph


2016/05/18 0

Enable peter-swing theme in netbeans

Edit : /Applications/NetBeans/NetBeans 8.0.2.app/Contents/Resources/NetBeans/etc/netbeans.conf Change the line to:


2015/09/06 0

Nazi gun tower


2015/07/13 0

Linux view csv command

alias csv=’column -s, -t’ csv your_file


2015/06/16 0

objdump 2.24 has bug

objdump 2.24 has bug, but this bug is fixed in 2.25. It dump the wrong address for my 32 bits kernel.


2015/05/22 1

Fixed ubuntu vnc keymap problem

ubuntu 12.04 vnc keymap has trouble, D become minimize all windows and S become start menu, run these to fix it.


2015/03/19 0

tomcat auto startup script

just save this to /etc/init.d/tomcat and link to /etc/rc5.d/S99tomcat


2015/01/21 0

disable gnome “unable to mount…” dialog

gsettings set org.gnome.desktop.media-handling automount false …and enable it again: gsettings set org.gnome.desktop.media-handling automount true


2015/01/14 0

why i receive zero in my socket

I have two programs, one written in c++, the other is in java. C++ keep sending bytes to java, overtime write out 400KB. Java keep receiving the data using the readBytes function, this function returns an integer which is the number of byte it actually read for the function call. For every send (400kb) in…
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2015/01/08 0

(solved) install .net 3.5 to azure windows 2012

Install the below fix will resolve this issue http://support2.microsoft.com/kb/3005628


2014/10/11 0

[solved] usb wireless mouse freeze periodically in ubuntu 12.04 lts

usb wireless mouse freeze periodically in ubuntu 12.04 lts, edit /boot/grub/grub.cfg, add a boot option irqpoll will fix it


2014/08/24 1

Add tabIndex to all tag incrementally

in VI, there is a command to add tabIndex to all tag incrementally :let i=200 | g/


2014/08/23 0

We should mix 4K and 4M Page

I was fixing the PSE and PAE page table display for GKD, I found out Linux using 4M page to map large address space and it uses 4K page to map broken space. So advance OS should mix use of 4K and 4M page.   Now GKD supports PSE=1 (4M page)


2014/07/27 0

I think i am under dns attack

I think i am under dns attack, in my /var/log/message i keep seeing these. Someone is using over 2000 ip to lookup my dns server.


2014/07/12 1

a good free usenet server

a good free usenet server news.aioe.org


2014/06/30 0

Latest Titan Portal progress

Need 2 more months will finish everything


2014/06/10 0

Get IP of guest vm in virtualbox

VBoxManage guestproperty get “vmname” “/VirtualBox/GuestInfo/Net/0/V4/IP” | awk ‘{ print $2 }’


2014/06/09 0

2GB ram has higher temperature than 4GB ram

Just buy one more 2nd hand server. Everything are the same including the OS, except one using 8x2GB ram and the other using 4x4GB ram. I found out 4GB ram has lower temperature than 2GB ram. I guess is because in 4GB-ram-block server, it has more space between each ram (because i only used 4…
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2014/06/01 0

My new server

Just bought a 2nd hand HP server (8core + 16GB ram), cost me $2630 HKD. One 1TB 2.5″ hard disk cost me $450. Total $3080. It reboot only take 20 seconds, dell needs 5 mins (CRAZY!!!)  


2014/05/20 0

Analyst android ELF dependency-graph by elf-dependency-walker

Someone asked me in email about using elf-dependency-walker to analyst library or executable in linux. I found out android is using ELF format for its libraries or executables too. So the rest is simple. Please download the android emulator, within the directory there is the system image, which contain the file system. You can see in…
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2014/05/13 0

solved : compile error in ffmpeg “error: invalid combination of opcode and operands”‏

I am using ubuntu 12.04 64 bits and trying compile ffmpeg and got this error: libavfilter/x86/vf_pullup.asm:59: error: invalid combination of opcode and operands libavfilter/x86/vf_pullup.asm:138: error: invalid combination of opcode and operands libavfilter/x86/vf_pullup.asm:175: error: invalid combination of opcode and operands To solve this, add “–disable-mmx” to your ./configure


2014/05/13 0

sox and ffmpeg (convert hls into live hls) usage

These are the basic usage of SOX This script will convert ffmpeg HLS into “live streaming HLS” The above script has to run with ffmpeg: /root/download/ffmpeg-2.1.4/ffmpeg -f alsa -ac 2 -i hw:0,0 -strict experimental -acodec libmp3lame -map 0 -f segment -segment_list out.m3u8 -segment_format libmp3lame -segment_time 0.5 -segment_list_flags +live ‘a%05d.mp3’


2014/05/08 0

Eclipse CDT too many semantic errors

If you have too many “semantic error” in eclipse CDT, such like this   You can switch it off in project properties but unblock “Syntax and Semantic Errors”


2014/04/22 0

When ESXi expire, you will see this dialog

When ESXi expire, you will see this dialog, so you know what features need money


2014/03/26 0

Open vswitch overview

Start ovs monitor, look at the tabs’ name, you probably know how many function that OVS offer, this give me a big picture of integrate ova into openstack.


2013/12/22 0

How geek work

This is how geek work. http://www.inside.com.tw/2013/05/13/the-secret-of-a-geek-s-productivity


2013/12/09 0

my vlc command to stream video to pc/iOS/android

Stream to a mp4 Stream to a FLV  Stream to a HLS


2013/08/22 2

Samsung galaxy s4, charging the battery, using samsung USB cable is much faster

Samsung galaxy s4, charging the battery, using samsung USB cable is much faster than third-party usb cable, here is my test 1) samsung power adapter + samsung usb cable, charge from 10% to 30% takes 20 minutes 2) samsung power adapter + third-party 3M-long usb cable, charge from 10% to 30% takes 1 hour and 15…
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2013/05/13 1