Android ASP Astrology Big5 Bitcoin Blowfish Built-in C# Calendar CD-DVD Cheminformatics Chinese Cryptography DES Email Encoding Ethereum Flash GB2312 General H Herong History HTML Java JavaScript JDBC JSP JVM Linux Molecule Movie Music MySQL Neural Network Perl PHP Physics PKI Publication Python Reference REST SOAP Sorting Swing TV Series UML Unicode VBScript Web Web-Services Windows WSDL XML XMLPad XSD XSL-FO

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Free Chinese Calendar 2011 - Year of the Rabbit
Want to know when is the 2011 Chinese New Year day? Look for free Chinese calendars for 2011? Chinese New Year Date for Year 2011 The Rabbit 2011 February 3 Thursday Chinese New Year   ⇒ Free Chinese Calendar 2012 - Year of the Dragon ⇐ Free Chinese Calendar 2010 - Year of the Tiger ⇑ Free Chinese ... 2024-09-12, 13919🔥, 2💬

💬 2024-09-12 Herong: Larry, do you have any suggestions to make it better?

💬 2024-09-09 Larry Lin: I've never seen a website designed in so confusing, directing here and there and ending up to nowhere.

Loading JDBC Driver for MySQL Server
This section describes how to load the MySQL JDBC driver class - mysql-connector-java-xxx-bin.j ar. 2024-08-29, 14831🔥, 1💬

💬 2024-08-29 bk: bull-kit

💬 2019-04-28 M1001101: Meaningful comments. Thanks!

💬 2018-09-20 raj: hatt budbak aisa kuch nahin hota bakwas hai ye program

💬 2017-09-16 vivek sharma: good

💬 2017-01-14 Herong: Thanks for the nice comment! ☺

(More comments ...)

Archived: Downloading and Installing JDK 1.6
This section describes how to download and install Java SE (JDK) 1.6 Update 2 on a Windows XP system. 2024-08-17, 292🔥, 2💬

💬 2024-08-17 Herong: NullPTR, can you download the JDK .exe file on the newer computer and transfer it to your Windows XP?

💬 2024-08-15 NullPTR: the link to download javase will redirect to oracle.com,but i cant click agree eula on the download page with chrome 47 on windo...

List CPU Caches and Their Sizes
This section describes how to use 'lscpu', 'lshw' and 'dmidecode' commands to list CPU caches and their sizes. 2024-08-17, 116🔥, 0💬

Layers of Memory and Access Speed
This section describes layers of memory: CPU Register, CPU Caches, RAM and hard disk. 2024-08-17, 113🔥, 0💬

Verify Cache Memory with "cp" Command
This section provides a tutorial example to verify the cache memory usage in the RAM free space using a single 'cp' command. 2024-08-17, 113🔥, 0💬

smem - Process Memory Usage Report
This section provides a tutorial on how to install 'smem' and use it to report memory usage of each running process. 2024-08-17, 113🔥, 0💬

"who | w" - Logged-in Users and Their Running Commands
This section provides a tutorial example on how to display logged-in users and their running commands using 'who' and 'w' commands on Linux systems. 2024-08-17, 111🔥, 0💬

What Is Swap Space
This section describes swap space, reserved area on the hard disk that extends RAM to form a larger physical memory. 2024-08-17, 111🔥, 0💬

Memory Management
This chapter provides introductions and tutorial notes on memory management. Topics include memory layers and access speed; cache memory levels; virtual memory and physical memory mapping; page table; buffers, caches and swap spaces; memory usage reporting tools: free, ps, smem, pmap, /proc/meminfo,... 2024-08-17, 110🔥, 0💬

Virtual Memory Mapping and Page Table
This section describes virtual memory page, physical memory frame, and page table that maps a page to a frame. 2024-08-17, 110🔥, 0💬

"ps -o rss,drs,trs,vsz,sz" - Process Status Options
This section provides a tutorial on how to 'ps -o rss,drs,trs,vsz,sz' command to report memory usage of each running process. 2024-08-17, 110🔥, 0💬

pmap - Process Memory Map
This section provides a tutorial on how to install 'smem' and use it to report memory usage of each running process. 2024-08-17, 110🔥, 0💬

/proc/{id}/smaps - Process Memory Map Details
This section describes the pseudo file '/proc/{id}/smaps' that represents virtual memory map of a given process with detailed information on each mapped area. 2024-08-17, 110🔥, 0💬

Virtual Memory vs. Physical Memory
This section describes virtual memory, which is mapped to physical memory through MMU (Memory Management Unit). 2024-08-17, 108🔥, 0💬

Buffer Memory and Cache Memory
This section describes buffer memory and cache memory, which are temporary memory allocations in the free RAM area to improve data input and output performance on hard disk. 2024-08-17, 108🔥, 0💬

/proc/{id}/maps - Process Memory Map
This section describes the pseudo file '/proc/{id}/maps' that represents virtual memory map of a given process. 2024-08-17, 108🔥, 0💬

GD Library - Draw Graphical Elements
This section provides a tutorial example on how to draw graphical elements using GD Library functions. 2024-08-11, 549🔥, 1💬

💬 2024-01-19 <zx&a: great

💬 2022-09-22 alì babbà: commento del piffero!

The Constancy of the Speed of Light
This section provides a thought experiment to help understanding the second assumption of the special theory of relativity: The constancy of the speed of light. 2024-08-08, 1867🔥, 75💬

💬 2024-06-25 Hiroji Kurihara: Speed of Starlight A glass cube is floating horizontally in outer space. Two rays of starlight coming from the left and right ar...

💬 2022-11-19 Hiroji Kurihara: Light is Propagated in Two Ways 　　　　　　　　　　　　 In outer space, a starlight is reflected by a mirror. There is a formula c = ...

💬 2022-04-30 Hiroji kurihara: Herong, Thanks, for accepting my comments. Now, URL of my web-site is as follows, http://lifeafterdeath.vip/eng.html

💬 2022-04-27 Hiroji kurihara: Sorry, last a few words of my post (04-25's) are missing. It is.... m<m/2+m/2.

💬 2018-12-18 Herong: Hiroji, Thanks for sharing your comment and the article. I will definitely read it.

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GD Library - Create Transparent Image
This section provides a tutorial example on how to create an image with transparent background using GD Library functions. 2024-07-29, 117🔥, 0💬

preg_quote() - Escape Characters in Pattern
This section provides a tutorial example on how to quote special characters in a string to be used as a regular expression pattern using the preg_quote() function. 2024-07-29, 117🔥, 0💬

GD Library - Pad Transparent Image
This section provides a tutorial example on how to pad the transparent background of to expand an image using GD Library functions. 2024-07-29, 115🔥, 0💬

OpenSSL Module - Cryptography and SSL/TLS Toolkit
This chapter provides tutorial examples and notes on OpenSSL module. Topics include introduction of commonly used OpenSSL functions; computing digest/hash value; generating private and public key pairs; symmetric encryption and asymmetric encryption; generating digital signatures; sealing (double-en... 2024-07-29, 113🔥, 0💬

preg_split() - Split String into Tokens
This section provides a tutorial example on how to split a string with pattern delimiters using the preg_split() function. 2024-07-29, 112🔥, 0💬

1 2 3 4 5 6 … > >>   ∑:7917  Sort:Rank

Android ASP Astrology Big5 Bitcoin Blowfish Built-in C# Calendar CD-DVD Cheminformatics Chinese Cryptography DES Email Encoding Ethereum Flash GB2312 General H Herong History HTML Java JavaScript JDBC JSP JVM Linux Molecule Movie Music MySQL Neural Network Perl PHP Physics PKI Publication Python Reference REST SOAP Sorting Swing TV Series UML Unicode VBScript Web Web-Services Windows WSDL XML XMLPad XSD XSL-FO