Typical voice features jargon.

Typical voice features jargon.

Courtesy Wikipedia
http://en.wikipedia.org/wiki/IP_PBX

Linux Commands Revisited Open projects Revisited Documentation style Revisited

Over the past nine years of my IT experience, I find redundant/obsolete  knowledge getting on my nerves .
I end up bookmarking a lot of them not making it any use and ultimately getting Google search for my rescue.

The following are few links that I really felt are very useful against my exposure and commands that I used in past to get things done.

10 Examples of Linux Free Command 10 Command Line Tools to Monitor Linux Performance 20 Practical Examples of RPM Commands in Linux 18 Tar Command Examples in Linux 15 Basic 'ls' Command Examples in Linux 12 Tcpdump Commands - A Network Sniffer Tool 10 Wget (Linux File Downloader) Command Examples in Linux 8 Pratical Examples of Linux "Touch" Command Basic Guide on IPTables (Linux Firewall) Tips / Commands 10 Useful du (Disk Usage) Commands to Find Disk Usage of Files and Directories 20 MySQL (Mysqladmin) Commands for Database Administration in Linux Install Fping ICMP Program on RHEL/CentOS 6/5/4 15 Useful "ifconfig" Commands to Configure Network Interface in Linux How Do I Access or Mount Windows/USB NTFS Partition in RHEL/CentOS/Fedora 20 Netstat Commands for Linux Network Management A Basic Guide to Different Stages of Linux Boot Process 25 Useful Basic Commands of APT-GET and APT-CACHE for Package Management 20 YUM Commands for Linux Package Mangement Block SSH Server Attacks (Brute Force Attacks) Using DenyHosts 35 Practical Examples of Linux Find Command

Code reuse from existing projects and integration becomes important skill

Some cutting edge ones out here
red5 - RTMP, VOD, SharedObjects, live video broadcasts, AMF0, AMF3 Compatible, remoting and the list goes on - Google Project Hosting google-guice - Guice (pronounced 'juice') is a lightweight dependency injection framework for Java 5 and above, brought to you by Google. - Google Project Hosting wro4j - Web Resource Optimizer for Java - wro4j - Google Project Hosting goda-time - GWT port of Joda-Time - Google Project Hosting rome - ROME: Robust Optimization Made Easy - Google Project Hosting Jersey— Java.net grails-jaxrs - JSR 311 plugin for Grails - Google Project Hosting javamelody - monitoring of JavaEE applications - Google Project Hosting - USEFUL TOOL -- jconsole on web gwtuml - A UML modeller based on GWT - Google Project Hosting mobicents - Open Source Cloud Communications - Google Project Hosting TeleStax – Open Source sipservlets - Mobicents SIP Servlets Leading Open Source Implementation and HTML5 WebRTC Compliant SIP AS - Google Project Hosting fest - Fixtures for Easy Software Testing - Google Project Hosting javabuilders - On a mission to maximize Java UI development productivity - Google Project Hosting resting - Lightweight Java component to consume REST service and transform response into objects - Google Project Hosting

Documentation becomes key in marketing your product.
A good style is only followed by RedHat

https://access.redhat.com/knowledge/docs/

Linux distributions -- Mapping kernel version to release

There are a plenty of linux distribution and people are blinded . Best way to take call is using command uname --all

Example :

For  RHEL 5


Linux hostname 2.6.18-274.12.1.el5PAE #1 SMP Tue Nov 8 21:58:59 EST 2011 i686 i686 i386 GNU/Linux

For RHEL 6

Linux hostname 2.6.32-220.el6.x86_64 #1 SMP Wed Nov 9 08:03:13 EST 2011 x86_64 x86_64 x86_64 GNU/Linux

Execute linux bash command and read its output from java Program

This is a very frequent snippet that you want and spend a lot of time researching on the basic technique. Following is the java code snippet.

Parsing the response headers in Java from URLConnection object

Often when doing programming with HTTP requests and responses there would be headers that would be sent via URLConnection object.

A generic  java snippet to parse the headers are like this.

Mathematical puzzles to motivate a programmer

Off late have encountered multiple instance wherein, some high end technological innovations are spurred from basic mathematically theory.

Loads of links point at this piece of crucial skill.

Some links that you could follow are:

Math Puzzles

Good repository to exerice your brain.

MURDEROUS MATHS BRAINBENDERS

Missionaries and cannibals problem - Wikipedia, the free encyclopedia

Portal:Mathematics/Featured picture archive - Wikipedia, the free encyclopedia

Basis for Cube processor techincal thought you gave and inked on 13 OCT 2012

Menger sponge - Wikipedia, the free encyclopedia

List of fractals by Hausdorff dimension - Wikipedia, the free encyclopedia

Polygramme Isarel flag derived by fractals

Index et notations courbes planes

plane symmetries

plane symmetry groups

Fill-It-In Outline Mathematics

Fill-It-In Outline Mathematics: a few dozens word problems in arithmetic, geometry, algebra, logic - all in an outline These are some brain teaser games on iPhone

IXL - Fourth Grade Math Practice

IXL is the Web's #1 math practice site. The 4th grade level provides unlimited practice in 200+ math skills in a colorful, fun environment.

Java | Programming Challenges – Puzzles – Algorithms – Solutions

Generator Matrix -- from Wolfram MathWorld

Venn Diagram -- from Wolfram MathWorld

Solved Problems -- from Wolfram MathWorld

Tapping Into the Power of GPU in Mathematica « Wolfram Blog

Mathematica's GPU programming integration is the full automation of the GPU function developing process. Write, compile, test, run code in a single step.

10 Puzzle Websites to Sharpen Your Programming Skills

Here are the top 10 popular programming puzzle sites that will help test your thinking and improve your programming, problem solving, and logical thinking skills.

Coding Horror

Evil Mad Scientist Laboratories | Making the world a better place, one Evil Mad Scientist at a time.

The Cathedral and the Bazaar - Wikipedia, the free encyclopedia

The Cathedral and the Bazaar

Math puzzles solution

Sam Loyd's Cyclopedia of Puzzles 

 

Enjoy playing with numbers.

 

Programming technologies vs OSI layer stack

The following is a rough diagram that visualizes a understanding of my various web programming techniques to pure theoretical categorization of OSI network  models  

Give this a thought and life-cycle of individual technologies and you find a cohesiveness of basic concepts.
Good References 
[1]
https://www.sciencedirect.com/topics/computer-science/network-architecture
[2]
https://www.sciencedirect.com/topics/computer-science/layer-architecture 

[3] Spatial Networks  
https://www.tandfonline.com/doi/pdf/10.1080/24751839.2017.1295601


This will help in IoT and emerging technologies solution design in 2020 and years to come