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while loading shared libraries … cannot open shared object file

April 28, 2017oliver Leave a Comment

.build_release/tools/caffe: error while loading shared libraries: libhdf5_hl.so.10: cannot open shared object file: No such file or directory This means the C loader can not find the file libhdf5_hl.so.10 Solution. I found some clues online. Not sure if each solution gives… Continue Reading →

Linux

ld cannot find -lxxxxx

April 25, 2017oliver Leave a Comment

When compiling codes, sometimes we get the error like ld cannot find -lxxxxx This means that the C linker can’t find libxxxxx.so The reason could be: 1. The actual library file name is libxxxxx.so.N instead of libxxxxx.so In this case,… Continue Reading →

Linux

CentOS show Nautilus location bar

March 11, 2017oliver Leave a Comment

On CentOS 7, the new Nautilus file explorer window doesn’t provide the directory location bar by default. We can manually change the setting of Nautilus and enjoy the capability of location by typing the following command as a regular user(not… Continue Reading →

Linux

Big-O Complexity Chart

March 7, 2017oliver Leave a Comment
Algorithm

Notation of Asymptotic Growth

March 7, 2017oliver Leave a Comment

f(n) can have following notation meaning of g(n) in different ways: Notation Bound Informal Definition: for a large n (theta) Θ UPPER, LOWER k1 g(n) ≤ f(n) ≤ k2 g(n) for some fixed constants k1 and k2 (Big-oh) O UPPER… Continue Reading →

Algorithm

Configure Apache + Tomcat with Websocket capability

March 4, 2017oliver Leave a Comment

If you configure Apache httpd server and Tomcat server together, you usually use Tomcat connect(AJP) to hook up both of them. Http requests and responses are transferred through the AJP tunnel. AJP works well on HTTP protocols. However, if you… Continue Reading →

Website Setup

Disable RichFaces skinning.ecss

March 4, 2017oliver Leave a Comment

In web.xml, add following derivative.

JSF

CentOS 7 .bash_profile not working

February 12, 2017oliver Leave a Comment

If you experience ~/.bash_profile not loading on CentOS 7, you can try to put your script in ~/.bashrc instead.

Website Setup

Error parsing XHTML: The content of elements must consist of well-formed character data or markup

January 23, 2017oliver Leave a Comment

The error is caused by missing of starting/ending markup tags or incorrect usage of XML characters. The scenarios could be: < the start of a tag. > the end of a tag. ” the start and end of an attribute… Continue Reading →

Java

Apache HTTP Server Control Interface

January 15, 2017oliver Leave a Comment

apachectl is a front end to the Apache HyperText Transfer Protocol (HTTP) server. It is designed to help the administrator control the functioning of the Apache httpd daemon. Notice. On the httpd server, /etc/resolv.conf will affect how Apache maps the… Continue Reading →

Website Setup

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