Day-to-day Tech Learning: 2014

Sunday, December 7, 2014

Identify and kill inactive flowcharts

Friday, December 5, 2014

1) Thread Dump Analysis for IBM JVM - Part 1

I came across a good video which explains how to make sense of the java core text file.
Give it a watch or two and it will make sense.
Thread Dump Analysis for IBM JVM - Part 1

2) How to Analyze Java Thread Dumps - DZone article
Below is a pretty detailed article on analysing thread dumps - the HOW Tos..

3) Thread dump analysis - javaeesupportpatterns
Quite enjoy the coverage of this article. Take a look here.

4) Webcast replay: Analysis of hangs, deadlocks, and resource contention or monitor bottlenecks using IBM Thread and Monitor Dump Analyzer for Java Technology .
Find the link here.

5) Diagnose java resource starvation

6) Using a java dump

7)How to diagnose starvation issue using IBM Thread and Monitor Dump Analyzer for Java Technology

Take a look at the ppt here.

Friday, November 28, 2014

Wednesday, November 26, 2014

Understanding Offer Import from IBM Campaign into IBM MarketingOperations

Follow the link below to understand the motivation and technical details about this feature.

Dev Works - Offer Import from IBM Campaign into IBM Mktg Operations

Thursday, October 30, 2014

Organizing Evernote for maximum efficiency!

Follow the link below to understand how we can organize Evernote for maximum efficiency!
Organising Evernote for maximum efficiency!

Interesting java projects to contribute to and learn!

Follow the link (from Joe's blog) below for the some interesting java projects to contribute to and learn!

Interesting java proects

Wednesday, October 8, 2014

Getting started with Android Wear

A good article on dzone
http://blogs.shephertz.com/2014/07/24/android-wear-getting-started/

And some really good youtube videos!
https://www.youtube.com/playlist?list=PLWz5rJ2EKKc-kIrPiq098QH9dOle-fLef

Using the Eclipse Copyright Tool

A useful link explaining the addition and usage of the copyright plugin for Eclipse IDE. Used commonly in release engineering processes.

https://wiki.eclipse.org/Development_Resources/How_to_Use_Eclipse_Copyright_Tool

IBM Campaign Documentation

IBM Campaign documentation available on the web here :
http://www-01.ibm.com/support/docview.wss?uid=swg27024998

IBM Campaign 9.1 Admin guide
http://www-01.ibm.com/support/docview.wss?uid=swg27039987&aid=1

IBM Watson Solutions - Building Cognitive apps

The official Youtube page
https://www.youtube.com/user/IBMWatsonSolutions

IBM Watson Analytics
http://www.pcworld.com/article/2684532/ibm-watson-analytics-preps-the-data-so-you-dont-have-to.html

Tuesday, October 7, 2014

SQL0437W Performance for this complex query may be sub-optimal

Follow the links below to find out about what causes it and how it can be resolved.
http://www-01.ibm.com/support/docview.wss?uid=swg21354421

http://www-01.ibm.com/support/docview.wss?uid=swg1IY93789

Why owning two cars does not make sense!

A good eye opener..

http://saurabhj.com/2014/10/why-owning-a-second-car-doesnt-really-make-much-sense/

Thursday, September 11, 2014

Fun with Cygwin

1 ) How to navigate to a directory in C:\ with cygwin?

cd /cygdrive/c

2) Exporting Variables

eg : >export REPORTS=/opt/qa/opt91x/

>echo $REPORTS

>cd $REPORTS

Starting Campaign on different OSes

A quick and handy reference to start Campaign on different Operating systems.

Unix systems.

On AIX, use bash. ksh does not work well for some reason.

Unix and Weblogic :

Starting WebLogic :

root@sol06:/data/Webserver/Weblogic12c/user_projects/domains/optimize_911x/bin# . setDomainEnv.sh

root@sol06:/data/Webserver/Weblogic12c/user_projects/domains/optimize_911x# ./startWebLogic.sh &

Starting Campaign
root@sol06:/opt/qa/Unica/opt91x/Campaign/bin# . setenv.sh
root@sol06:/opt/qa/Unica/opt91x/Campaign/bin# ./rc.unica_ac start &

Campaign on AIX and WAS
Websphere :
1) Stopping a server
</opt/IBM/WebSphere/AppServer/profiles/9103/bin>
bash-3.2# ./stopServer.sh server1

2)Starting a server
bash-3.2# ./startServer.sh server1

Starting the Campaign server on AIX
bash-3.2# . setenv.sh
bash-3.2# ./rc.unica_ac start

Tuesday, September 9, 2014

Trouble-shooting connecting to the SQL Server

http://social.technet.microsoft.com/wiki/contents/articles/2102.how-to-troubleshoot-connecting-to-the-sql-server-database-engine.aspx

Thursday, September 4, 2014

Invest in PPF Online through NetBanking

Watch this detailed Youtube video which shows you how to invest in PPF online through Net Banking.
https://www.youtube.com/watch?v=VHaBLQgM_oM

PPF from Post Office
http://www.indiapost.gov.in/ppf.aspx

Tuesday, September 2, 2014

Morris.js Charting Library

A "very" simple javascript library to get line charts, bar charts, donut charts and area charts.
http://morrisjs.github.io/morris.js/

Interactive Donut Chart
http://jsbin.com/ukaxod/144/embed?javascript,live

Wednesday, August 27, 2014

Networking commands - flushdns

Flushdns - Fire this command when you want to clear the DNS cache.

At times, when a machine is not reachable/pingable, fire the following command.

C:\Users\Administrator>ipconfig /flushdns

Windows IP Configuration

Successfully flushed the DNS Resolver Cache.

Monday, August 25, 2014

Quick and easy introduction to Vi

Read this tutorial to get a useful, quick and a practical introduction to Vi!

http://heather.cs.ucdavis.edu/~matloff/UnixAndC/Editors/ViIntro.html

Sunday, August 24, 2014

Destination Host Unreachable Error

Two things you could do :

1) On a windows machine go to C:\Windows\System32\drivers\etc\notepad hosts
(You would have to run this with admin rights )

Make sure you remove any prior mapping of your host file.
Try pinging the machine again.

2) On a command prompt, type arp -a
For a list of the currently available/reachable Ip's.
See if the IP you are trying to ping is listed there.

For additional information, follow the stack overflow link here.

http://superuser.com/questions/453933/pinging-a-machine-on-my-local-network-gets-an-unreachable-response-from-my-own

Thursday, August 21, 2014

Boot-strappe(d)! - Learning Bootstrap

1. The tutorial
http://www.tutorialspoint.com/bootstrap/bootstrap_grid_system.htm

2.1 A good explanation on Bootstrap-3 Grid.
The tutorial also covers offset, push and pull
http://www.zeninvader.com/css/bootstrap-3-grid-system-explained

2.2 View a live page with examples here.
http://www.zeninvader.com//downloads/examples/bootstrap1/index.html#ex2

Wednesday, August 20, 2014

Font-Awesome! Popular icons on the web available as fonts..

The link below is a good tutorial on the available icons in Font-Awesome!
http://www.caritorsolutions.com/blog/162-how-to-use-font-awesome-icons

Font-awesome Data Attributes
http://codepen.io/kishorwalke/pen/iEevw

Tuesday, August 19, 2014

Importing a CSV file into database with SQL Server Mgmt Studio

Follow the link below to know how!
https://support.discountasp.net/KB/a1179/importing-csv-file-into-your-database-with-sql-server.aspx

And refer to the screen shots here.

SQL Alchemy!

The complete reference to SQL Alchemey!
http://www.sqlalchemy.org/library.html

Hibernat-ing!

Eclipse Install and Setup for Hibernate
http://kaanmutlu.wordpress.com/2011/07/30/hibernate-installationsetup-on-eclipse-ide/

Follow the link below for a sample Hibernate application using JPA (annotations) and XML.
http://kaanmutlu.wordpress.com/2011/07/30/sample-hibernate-application/

Renaming a table in different databases

Follow the link below to know how!

http://www.1keydata.com/blog/2012/12/rename-table-in-sql.html

Awesome JDBC Usage with Design Patterns

1) Follow the link below for a well written example on JDBC Singleton Connectivity.

http://theopentutorials.com/tutorials/java/jdbc/jdbc-examples-introduction/#Singleton_design_pattern

2) A simple JDBC Application
http://www.tutorialspoint.com/jdbc/jdbc-sample-code.htm

Build an Android App on BlueMix

Follow the link below to learn how to develop and deploy an android app on BlueMix!

https://www.ng.bluemix.net/docs/BuildingMobile.jsp

Sunday, August 17, 2014

Geo-Json the Google Doc

A google tutorial on Geo-json

https://developers.google.com/maps/tutorials/data/importing_data

OGRE - ogr2ogr web client

Convert to GeoJSON
http://ogre.adc4gis.com/

Geo-Json external data

Getting geo-json data for India
https://groups.google.com/forum/#!topic/datameet/dZ96g7ngWAg

India_adm zip file download
http://www.filefactory.com/file/61su34uudcjz/n/IND_adm_zip

Geo-Names Dump
http://download.geonames.org/export/dump/

http://stackoverflow.com/questions/20322613/where-can-i-get-the-geojson-file-for-india-and-not-separate-files-for-each-stat

Loading external data into d3

Quick video that explains how to load external data eg: json into D3

https://www.youtube.com/watch?v=2S1AbEWX85o

D3JS Group element. - Transform etc

http://stackoverflow.com/questions/13728402/what-is-the-difference-d3-datum-vs-data

Difference between Datum and Data in D3

Follow the link below for a Stack Overflow Discussion
http://stackoverflow.com/questions/13728402/what-is-the-difference-d3-datum-vs-data

Add an image to D3

Follow the discussion below for an idea about how one can add images to D3.
http://stackoverflow.com/questions/19202450/adding-an-image-within-a-circle-object-in-d3-javascript

https://groups.google.com/forum/#!topic/d3-js/fL8_1BLrCyo

http://stackoverflow.com/questions/19202450/adding-an-image-within-a-circle-object-in-d3-javascript/19204833#19204833

Adding image to D3 - A good tutorial
http://apike.ca/prog_svg_images.html

D3 Json Download Links

Here's the link to download the json's in the d3 examples.
http://static.cybercommons.org/js/d3/examples/data/

D3 visualization for CodeFlower

Here's the link to the D3 Code Flower Visualization
http://redotheweb.com/CodeFlower/

MAMP Server

Here's the link to download the MAMP Server.
http://www.mamp.info/en/downloads/

Geo Json Useful Links

1. The Geo-Json specification
http://geojson.org/geojson-spec.html

SVG Primer

A detailed document on SVG standards for today's brwsers from w3c.

http://www.w3.org/Graphics/SVG/IG/resources/svgprimer.html

Access a DB from a Java Application

Follow the steps below to see how to access a DB from a Java web application

https://www.ng.bluemix.net/docs/#services/SQLDB/index.html#sqldb_002

Creating apps with Java Web Starter

Follow the tutorial below to find how to create an app with Java Web starter
https://www.ng.bluemix.net/docs/#starters/javawebstarter/index.html#javawebstarter

Installing the cf Command Line Interface

Follow the link below for easy steps on each OS.
http://docs.cloudfoundry.org/devguide/installcf/install-go-cli.html

Deploying on BlueMix using Eclipse

1) Download and Install Eclipse Kepler
2) Eclipse Market Place -> Download Blue Mix plugins from here
http://marketplace.eclipse.org/content/ibm-codename-bluemix-eclipse-kepler#.U7ZcfBDCe6M

Choose the following options :

3) Video explaining how to deploy to BlueMix using Eclipse
https://www.youtube.com/watch?v=Ro0CSPeoFoY

4) Setting up Eclipse, Git and RTC Desktop to access DevOps services
https://hub.jazz.net/tutorials/clients

5) Using Eclipse to deploy an application to BlueMix
https://www.ibm.com/developerworks/community/blogs/msardana/entry/exploring_bluemix_exploring_bluemix_using_eclipse_to_deploy_your_application_to_bluemix?lang=en

6)Developing IBM Bluemix applications in Java with Eclipse and DevOps Services
https://hub.jazz.net/tutorials/jazzrtc

SQL DB Primer

My SQL DB Primer Dev Ops Project Link

D3Js maps!

An example covering a demo json and mouse over on each of the states.

http://techslides.com/responsive-d3-map-with-zoom-and-pan-limits/http://techslides.com/responsive-d3-map-with-zoom-and-pan-limits/

Lets make a map with Mike
http://bost.ocks.org/mike/map/

A good video Tutorial on the same
http://www.youtube.com/watch?v=lJgEx_yb4u0

Adding India Map in D3
http://bl.ocks.org/JohnCoogan/1531818#zcolorbrewer.css

http://stackoverflow.com/questions/18425440/displaying-map-using-d3-js-and-geojson

A simple D3Js map explained.
http://www.d3noob.org/2013/03/a-simple-d3js-map-explained.html

D3 Map of India on Mac
http://www.knowstack.com/d3-map-of-india/

Friday, August 15, 2014

D3 Quick Learning Links

Detailed d3.js tutorial.
http://alignedleft.com/tutorials/d3/adding-elements

Download the latest version of d3.js here
https://github.com/mbostock/d3/releases

D3 API Reference
https://github.com/mbostock/d3/wiki/API-Reference

Wednesday, August 13, 2014

BlueMix Trouble Shooting Links

1. General BlueMix TroubleShooting

https://cloudoe.support.ibmcloud.com/link/portal/5377/31036/Article/19069/General-Bluemix-issues-troubleshooting#visited

2. SQL DB instance docs
http://www.ng.bluemix.net/docs/#services/SQLDB/index.html#sqldb_006

Orient DB

Orient DB Documentation Source
https://github.com/orientechnologies/orientdb/wiki

OreintDB Quick Start
https://github.com/orientechnologies/orientdb/wiki/Quick-Start

OrientDB Java Tutorial Introduction
https://github.com/orientechnologies/orientdb/wiki/Java-Tutorial:-Introduction

D3JS - Data Driven!

The complete gallery
https://github.com/mbostock/d3/wiki/Gallery

http://bl.ocks.org/mbostock

D3-Dateline - demodata.json
https://github.com/pbinkley/D3-dateline/blob/master/demodata.json

Use de-tip to add a tooltip to a bar chart
http://bl.ocks.org/Caged/6476579

D3 - Source code
A Javascript visualization library for HTML and SVG
https://github.com/mbostock/d3

Let's recycle!

An awesome link describing all that is possible by recycling waste!

http://www.thealternative.in/lifestyle/lets-recycle-natasha-dcosta-a-plastic-bottle-mountain-and-lots-of-dirt/?fb_action_ids=10154492792940437&fb_action_types=og.comments

Execute BASH Online

Online Compiler to execute Bash
http://www.compileonline.com/execute_bash_online.php

Tuesday, August 12, 2014

Android Development

Client-server development
1. Simple Client Server communication in android
http://osamashabrez.com/simple-client-server-communication-in-android/

2. Client-server communication in android via json
http://osamashabrez.com/client-server-communication-android-json/

Monday, August 11, 2014

vi

How to exit from vi ?
http://www.linuxquestions.org/questions/linux-general-1/how-to-exit-vi-19794/

DBX Commands

The following snippets are as per the Oracle docs.
http://docs.oracle.com/cd/E19422-01/819-3683/command_ref.html#52675

1. source - The source command executes commands from a given file. It is valid only in native mode.

Syntax

source filename

Execute commands from file filename. $PATH is not searched.

2. where - The where command prints the call stack.

Native Mode Syntax

`where`	Print a procedure traceback.
`where` number	Print the number top frames in the traceback.
`where -f` number	Start traceback from frame number.
`where -h`	Include hidden frames.
`where -l`	Include library name with function name
`where -q`	Quick traceback (only function names).
`where -v`	Verbose traceback (include function args and line info).

where:

number is a number of call stack frames.

Any of the above forms may be followed by a thread or LWP ID to obtain the traceback for the specified entity.

Java Mode Syntax

`where [`thread_id`]`	Print a method traceback.
`where [`thread_id`]` number	Print the number top frames in the traceback.
`where -f [`thread_id`]` number	Start traceback from frame number.
`where -q [`thread_id`]`	Quick trace back (only method names).
`where -v [`thread_id`]`	Verbose traceback (include method arguments and line information).

where:

number is a number of call stack frames.

thread_id is a dbx-style thread ID or the Java thread name specified for the thread.

`3. cont` Command

The cont command causes the process to continue execution. It has identical syntax and identical functionality in native mode and Java mode.

Syntax

`cont`	Continue execution. In an MT process all threads are resumed. Use Control-C to stop executing the program.
`cont ... -sig` signal	Continue execution with signal signal.
`cont ...` id	The id specifies which thread or LWP to continue.
`cont at` line `[` id `]`	Continue execution at line line. id is required if the application is multi-threaded.
`cont ... -follow parent\|child\|both`	If the `dbx` `follow_fork_mode` environment variable is set to ask, and you have chosen `stop`, use this option to choose which process to follow. `both` is only applicable in the Sun Studio IDE.

`4. detach` Command

The detach command releases the target process from dbx's control.

Native Mode Syntax

`detach`	Detach `dbx` from the target, and cancel any pending signals.
`detach -sig` signal	Detach while forwarding the given signal.
`detach -stop`	Detach `dbx` from the target and leave the process in a stopped state. This option allows temporary application of other `/proc`-based debugging tools that might be blocked due to exclusive access. For an example, see Detaching dbx From a Process.

DBX Debugger

1. DBX How-to Guide
http://www-rohan.sdsu.edu/doc/dbx.html

2. A complete list of the dbx commands.
http://web.utk.edu/~prdaves/Computerhelp/dbx_commands.htm

3. Debugging a program with dbx - the complete guide
http://docs.oracle.com/cd/E19422-01/819-3683/index.html

4. Command Reference
http://docs.oracle.com/cd/E19422-01/819-3683/command_ref.html#52675

http://docs.oracle.com/cd/E19205-01/819-5257/blawp/index.html

5. DBX Debugger
http://en.wikipedia.org/wiki/Dbx_%28debugger%29

6. DBX Commands
http://dailytechlearning.blogspot.in/2014/08/dbx-commands.html

Unix Debuggers

1. dbx (debugger) -
http://dailytechlearning.blogspot.in/2014/08/dbx-debugger.html

Watchdog Utilities in Unix

1. Supervisor
http://supervisord.org/index.html

2. Why does SIGUSR1 cause a process to be terminated ?
http://unix.stackexchange.com/questions/38589/why-does-sigusr1-cause-process-to-be-terminated

Loops and others in scripting

1. Returning a value from a function in shell script
http://stackoverflow.com/questions/8742783/returning-value-from-called-function-in-shell-script

2. If condition variables.
21. Test conditions in an If loop provided by the shell.

The tests below are test conditions provided by the shell: 

-b file = True if the file exists and is block special file. 
-c file = True if the file exists and is character special file. 
-d file = True if the file exists and is a directory. 
-e file = True if the file exists. 
-f file = True if the file exists and is a regular file 
-g file = True if the file exists and the set-group-id bit is set. 
-k file = True if the files' "sticky" bit is set. 
-L file = True if the file exists and is a symbolic link. 
-p file = True if the file exists and is a named pipe. 
-r file = True if the file exists and is readable. 
-s file = True if the file exists and its size is greater than zero. 
-s file = True if the file exists and is a socket. 
-t fd = True if the file descriptor is opened on a terminal. 
-u file = True if the file exists and its set-user-id bit is set. 
-w file = True if the file exists and is writable. 
-x file = True if the file exists and is executable. 
-O file = True if the file exists and is owned by the effective user id. 
-G file = True if the file exists and is owned by the effective group id. 
file1 –nt file2 = True if file1 is newer, by modification date, than file2. 
file1 ot file2 = True if file1 is older than file2. 
file1 ef file2 = True if file1 and file2 have the same device and inode numbers. 
-z string = True if the length of the string is 0. 
-n string = True if the length of the string is non-zero. 
string1 = string2 = True if the strings are equal. 
string1 != string2 = True if the strings are not equal. 
!expr = True if the expr evaluates to false. 
expr1 –a expr2 = True if both expr1 and expr2 are true. 
expr1 –o expr2 = True is either expr1 or expr2 is true.

http://www.unix.com/shell-programming-and-scripting/81862-how-check-if-file-exists-using-if-statement.html

2.2 If-else Tutorial
http://www.dreamsyssoft.com/unix-shell-scripting/ifelse-tutorial.php

Signals and Traps

Termination Signals :
http://www.gnu.org/software/libc/manual/html_node/Termination-Signals.html
1. Sighup
http://stackoverflow.com/questions/13337701/what-can-cause-sighup-to-be-generated

2. SIGABRT
http://en.wikipedia.org/wiki/Unix_signal

3. C and CPP Unix Signal Programming Tutorial
http://www.tutorialized.com/view/tutorial/Unix-Signals-Programming/42401

4. Signals and Traps
Excellent tutorial explaining it all.
http://www.tutorialspoint.com/unix/unix-signals-traps.htm

Sunday, August 10, 2014

AWK

1. The AWK Tutorial
http://www.grymoire.com/Unix/Awk.html

2. FS : The input field separator variable
Example Usage :
The following script is used to find the major and the minor version of the release kernel.

-bash-4.1$ uname -r
1.7.17(0.262/5/3)

-bash-4.1$ uname -r | awk ' BEGIN { FS="[ , .]"} {print $1 }'
1
-bash-4.1$ uname -r | awk ' BEGIN { FS="[ , .]"} {print $2 }'
7
-bash-4.1$ uname -r | awk ' BEGIN { FS="[ , .]"} {print $3 }'
17(0
-bash-4.1$ uname -r | awk ' BEGIN { FS="[ , .]"} {print $4 }'
262/5/3)

3. NF - Number of Fields
Be sure to take a look at the example in the tutorial here. Crisp explanation.
http://www.grymoire.com/Unix/Awk.html#uh-17

What is Darwin?

Used by the Mac

http://en.wikipedia.org/wiki/Darwin_%28operating_system%29

Unix special variables

Unix Special Variables -

http://www.tutorialspoint.com/unix/unix-special-variables.htm

A complete list with examples :
http://teaching.idallen.com/dat2330/04f/notes/shell_variables.txt

How to find RAM utilization by a user in Linux

http://www.linuxnix.com/2011/05/find-ram-utilization-user-linux.html

NSD - Notes System Diagnostic

NSD - Notes System Diagnostic
http://www-01.ibm.com/support/docview.wss?uid=swg21100917

Probably the best doc on NSD so far!
NSD - A practical guide overview

Saturday, August 9, 2014

Shell Commands

1. Aliases - Update these values in .bash_profile file

          Example  : alias l='ls -l'

.bash_profile file is a shell script that is executed each time you log in

2. type - Used to determine whether the command is an executable, an alias or a function.
Syntax : type command

Example :

Input :

function today { echo "print data" } >type today

output

today is a function
today () 
{ 
    echo "print data"
}

3. bashrc - appropriate place to store functions and aliases. To read about syntax etc see here.

4. typeset
http://www.unix.com/unix-for-dummies-questions-and-answers/32178-typeset-ksh.html

5. tr - Used to replace/remove certain characters
http://en.wikipedia.org/wiki/Tr_%28Unix%29

6. uname - returns certain system information
http://en.wikipedia.org/wiki/Uname

(Taken from man )
SYNOPSIS
       uname [OPTION]...

DESCRIPTION
       Print certain system information. With no OPTION, same as -s.

       -a, --all
              print all information, in the following order, except omit -p
              and -i if unknown:

       -s, --kernel-name
              print the kernel name

       -n, --nodename
              print the network node hostname

       -r, --kernel-release
              print the kernel release

       -v, --kernel-version
              print the kernel version

       -m, --machine
              print the machine hardware name

       -p, --processor
              print the processor type or "unknown"

       -i, --hardware-platform
              print the hardware platform or "unknown"

       -o, --operating-system
              print the operating system

       --help display this help and exit

       --version
              output version information and exit

Example demonstrating usage of tr and uname :

-bash-4.1$ uname -s | tr -d /
CYGWIN_NT-6.1-WOW64
-bash-4.1$ uname -s | tr -d C
YGWIN_NT-6.1-WOW64
-bash-4.1$

7. Export - In a way, used to make variables global
http://www.cyberciti.biz/faq/linux-unix-shell-export-command/

8. which - Used to locate the executable for a command.
http://www.computerhope.com/unix/uwhich.htm
Example usage :

/usr/bin/cat
-bash-4.1$ which -p cat

9. whereis - Locates the binary, source and manual page files for a command.
http://www.computerhope.com/unix/uwhich.htm

Example usage :

-bash-4.1$ whereis cat
cat: /bin/cat.exe /usr/bin/cat.exe /usr/share/man/man1/cat.1.gz

10.env - used to print the env variables or to set certain values temporarily.
http://www.computerhope.com/unix/uenv.htm

11. id - Print real and effective ID's and GUIDs
http://linux.about.com/library/cmd/blcmdl1_id.htm
Example usage :

-bash-4.1$ id
uid=500(Administrator) gid=513(None) groups=513(None),545(Users)
-bash-4.1$ id -n

12. sed
http://www.grymoire.com/unix/sed.html

13. pmap - Memory utilization of a process
http://www.tutorialspoint.com/unix_commands/pmap.htm

http://www.cyberciti.biz/tips/howto-find-memory-used-by-program.html

14. svmon - AIX specific parameter that captures and analyses a snapshot of virtual memory.
http://ps-2.kev009.com/tl/techlib/manuals/adoclib/cmds/aixcmds5/svmon.htm

View an output screenshot here :
http://publib.boulder.ibm.com/infocenter/realtime/v2r0/index.jsp?topic=%2Fcom.ibm.softrt.aix32.doc%2Fdiag%2Fproblem_determination%2Faix_cmd_svmon.html

15. iconv - An API used to convert between different standard encodings
http://en.wikipedia.org/wiki/Iconv

16. who - Shows the currently logged in user
(Taken from man)
SYNOPSIS
       who [OPTION]... [ FILE | ARG1 ARG2 ]

DESCRIPTION
       Print information about users who are currently logged in.

       -a, --all
              same as -b -d --login -p -r -t -T -u

       -b, --boot
              time of last system boot

       -d, --dead
              print dead processes

       -H, --heading
              print line of column headings

17. $$ - The process id of the current shell. Used when creating unique temporary file names.
Example usage :

-bash-4.1$ echo $$
3768

18. mktemp - The secure way of creating temporary files

tempfoo=`basename $0`
TMPFILE=`mktemp -t ${tempfoo}` || exit 1
echo "program output" >> $TMPFILE

-t is now deprecated. Use Use mktemp ${tempfoo}.XXXXXX

Read below for a discussion on mktemp against $$ for creating temporarily files.

http://stackoverflow.com/questions/78493/what-does-mean-in-the-shell

18. ps - Reports process status
(Taken from man)

OPTIONS
       -a, --all
              show processes of all users

       -e, --everyone
              show processes of all users

       -f, --full
              show process uids, ppids

       -h, --help
              output usage information and exit

       -l, --long
              show process uids, ppids, pgids, winpids

       ps -W : Shows windows as well as cygwin processes

       ps -p p_id : Details of a specific process

Example of ps -f:

-bash-4.1$ ps -f
     UID     PID    PPID TTY        STIME COMMAND
Administ    3768    3916 pty0       Aug 10 /usr/bin/bash
Administ   12776    3768 pty0     07:16:48 /usr/bin/ps
Administ    3916       1 ?          Aug 10 /usr/bin/mintty

19. pid - Process id
20. ppid - Parent process id
21. pstree - A program showing the relationship of all processes in a tree like manner.
22. htop - Simpler process management and a better UI.
http://delightlylinux.wordpress.com/2012/06/25/what-is-pid-and-ppid/

23. Use of single quote (') - To treat it as a command.
Example usage :

Without quotes :
-bash-4.1$ v=ps -a
-bash: -a: command not found

With quotes

-bash-4.1$ v='ps -a'
-bash-4.1$ $v
      PID    PPID    PGID     WINPID   TTY     UID    STIME COMMAND
     7368    3768    7368       3672 pty0     500 07:16:49 /usr/bin/ps
     3768    3916    3768       1492 pty0     500 08:14:12 /usr/bin/bash
     3916       1    3916       3916 ?        500 08:14:12 /usr/bin/mintty

24. Find the launching command for a particular PID.

-bash-4.1$ ps -a
      PID    PPID    PGID     WINPID   TTY     UID    STIME COMMAND
     7064    3768    7064       8664 pty0     500 07:19:06 /usr/bin/ps
     3768    3916    3768       1492 pty0     500 08:14:12 /usr/bin/bash
     3916       1    3916       3916 ?        500 08:14:12 /usr/bin/mintty

-bash-4.1$ ps -p 3916
      PID    PPID    PGID     WINPID   TTY     UID    STIME COMMAND
     3916       1    3916       3916 ?        500 08:14:12 /usr/bin/mintty

(Strips off the header)
-bash-4.1$ ps -p 3916 | grep -i -v COMM
     3916       1    3916       3916 ?        500 08:14:12 /usr/bin/mintty

25. lslpp - Lists installed software products

Watch a detailed video here explaining details and usage.
https://www.youtube.com/watch?v=-9oJkRVFvTM

Read here for the text corresponding to the above video.
http://ps-2.kev009.com/tl/techlib/manuals/adoclib/cmds/aixcmds3/lslpp.htm#E088D37887joyc

A complete description of the commands.
http://www-01.ibm.com/support/knowledgecenter/ssw_aix_61/com.ibm.aix.cmds3/lslpp.htm?lang=en

26. /etc/issue - Used to customize your Unix Logon
http://www.linuxfromscratch.org/blfs/view/5.1/postlfs/logon.html

27. egrep - Extended Global regular Expressions
Make sure you go through the examples listed here to get a good feel about egrep.

Also it can be used using grep -E (see man)
http://www.cs.columbia.edu/~tal/3261/fall07/handout/egrep_mini-tutorial.htm

28. GDB/pstack and gstack
gdb - GNU Debugger
http://www.gnu.org/software/gdb/

pstack/gstack - Linux executable
It prints a stack trace of running processes

http://www.linuxcommand.org/man_pages/pstack1.html
http://linux.die.net/man/1/gstack

29. lsof - List open files
http://en.wikipedia.org/wiki/Lsof

30. declare - declare a variable as array, read-only, number only etc
http://www.linuxjournal.com/content/bash-declare-statement

31. kill - To kill a process
http://www.songsinhispresence.com/cdinfo.html#taken%20link

32. shift - This command takes one argument, a number. The positional parameters are shifted to the left by this number.
Read the link below for a good example on the same.
http://tldp.org/LDP/Bash-Beginners-Guide/html/sect_09_07.html

33. sleep - Sleep is used to delay for a particular amount of time.
http://www.computerhope.com/unix/usleep.htm

34. pgrep - It searches for all the named processes that can be specified as extended regular expression patterns, and—by default—returns their process ID. Alternatives include pidof (finds process ID given a program name) and ps.

http://en.wikipedia.org/wiki/Pgrep
http://linux.die.net/man/1/pgrep

35. cut - Print selected parts of lines from each FILE to standard output.

http://www.thegeekstuff.com/2013/06/cut-command-examples/

http://www.folkstalk.com/2012/02/cut-command-in-unix-linux-examples.html

36. grep - searches the named input FILEs (or standard input if no files are
       named, or if a single hyphen-minus (-) is given as file name) for lines
       containing a match to the given PATTERN. By default, grep prints the
       matching lines.

-e PATTERN, --regexp=PATTERN
              Use PATTERN as the pattern.   This can be used to specify
              multiple search patterns, or to protect a pattern beginning with
              a hyphen (-). (-e is specified by POSIX.)

       -f FILE, --file=FILE
              Obtain patterns from FILE, one per line.   The empty file
              contains zero patterns, and therefore matches nothing.   (-f is
              specified by POSIX.)

       -i, --ignore-case
              Ignore case distinctions in both the PATTERN and the input
              files. (-i is specified by POSIX.)

       -l, --files-with-matches
              Suppress normal output; instead print the name of each input
              file from which output would normally have been printed.   The
              scanning will stop on the first match. (-l is specified by
              POSIX.)

37. set - used to define and determine values of the system environment.
-m :
Background jobs will run in a separate process group and a line will print upon completion. The exit status of background jobs is reported in a completion message. On systems with job control, this flag is turned on automatically for interactive shells.

http://www.computerhope.com/unix/uset.htm
http://linux.about.com/library/cmd/blcmdln_set.htm

38. stty - Change and print terminal line settings
http://unixhelp.ed.ac.uk/CGI/man-cgi?stty

       -a, --all
       print all current settings in human-readable form

       -g, --save
       print all current settings in a stty-readable form

       -F, --file=DEVICE
       open and use the specified DEVICE instead of stdin

39. compress - compacts the files so that it will become smaller.
http://www.computerhope.com/unix/ucompres.htm

40. tput - Utilizes the terminal capabilities
http://en.wikipedia.org/wiki/Tput

Shell Scripting - Learning the commands and looping structures.

Online Bash Editor
Execute shell script on the Web!

http://www.compileonline.com/execute_bash_online.php

Loops

1. For Loop
http://www.cyberciti.biz/faq/bash-for-loop/

Friday, August 8, 2014

Shell Scripting

Introduction : The first shell script . A brief intro about the need of Shell.
http://www.linfo.org/create_shell_1.html

Types of Shells : Here's a quick look at the different types of Shells.

1) ksh - Korn shell
Explore Ksh scripting below.
http://www.well.ox.ac.uk/~johnb/comp/unix/ksh.html

Unix - A broad overview

1) Chmod examples for beginners
http://www.thegeekstuff.com/2010/06/chmod-command-examples/

2) 7 Chmod Command Examples for Beginners
http://www.thegeekstuff.com/2010/06/chmod-command-examples/

Tuesday, July 15, 2014

Count and distinct over multiple columns..

1) http://stackoverflow.com/questions/18715798/count-multiple-columns-sql

This is the final format of the query :

SELECT COUNT(*) FROM mytable GROUP BY id, name, address

2) COUNT() in SQL Server accepts the following syntax :

COUNT(*)
COUNT(colName)
COUNT(DISTINCT colName)

Good link to read is below

http://stackoverflow.com/questions/18968963/select-countdistinct-error-on-multiple-columns

3)  Count(DISTINCT) in multiple columns in SQL Server 2008

http://stackoverflow.com/questions/11920317/countdistinct-in-multiple-columns-in-sql-server-2008

SELECT COUNT(*) FROM (SELECT DISTINCT Column1, Column2  FROM Table) A

4) Counting over distinct columns

http://stackoverflow.com/questions/1471250/counting-distinct-over-multiple-columns

Friday, July 11, 2014

Git Hub Link for all BlueMix projects

Awesome GitHub link for the developed BlueMix projects..
http://ibm.github.io/

Tuesday, July 8, 2014

dW QnA on IBM devWorks

All BlueMix questions matching 'eclipse'
https://developer.ibm.com/answers/search/?csrfmiddlewaretoken=e222b89f845898046d1ca3700a2e02f5&q=eclipse&t=question&community=bluemix&x=0&y=0

How to fix errors after importing sample BueMix app into Eclipse
https://developer.ibm.com/answers/questions/8565/how-to-fix-errors-after-importing-sample-buemix-app-into-eclipse/?community=bluemix

Using IBM Eclipse Tools for Bluemix
https://developer.ibm.com/answers/questions/18050/using-ibm-eclipse-tools-for-bluemix/?community=bluemix

Deploying app to Bluemix using the liberty builpack and BlueMix for Eclipse tools
https://developer.ibm.com/answers/questions/13263/deploying-app-to-bluemix-using-the-liberty-builpack-and-bluemix-for-eclipse-tools/?community=bluemix

Creating new Bluemix server in Eclipse Kepler
https://developer.ibm.com/answers/questions/18344/creating-new-bluemix-server-in-eclipse-kepler/?community=bluemix

Friday, July 4, 2014

Watson and BlueMix

Natural Language QA system with Watson and Blue Mix
http://www.ibm.com/developerworks/cloud/library/cl-watson-films-bluemix-app/

Partner applications powered by Watson
https://developer.ibm.com/watson/docs/ibm-watson-ecosystem/use-cases/partner-applications-powered-watson/

5 Steps to a powered by Watson application
https://developer.ibm.com/watson/docs/5-steps-powered-watson-application/

What is the Watson Eco-system ?
https://developer.ibm.com/watson/

Examples with the Q n A REST Service?
https://developer.ibm.com/watson/docs/developing-watson-apis/examples-qapi/

Thursday, July 3, 2014

What is OpenStack ?

https://wiki.openstack.org/wiki/Main_Page

Awesome TED Talks Gardening Related

How to grow your own fresh air! By Kamal Meattle
http://www.ted.com/talks/kamal_meattle_on_how_to_grow_your_own_fresh_air

Janine Benyus - Biomimicry's surprising lessons from nature's engineers
http://www.ted.com/talks/janine_benyus_shares_nature_s_designs

Gardening from Stumble Upon
http://www.stumbleupon.com/interest/gardening?_nospa=true

Wednesday, July 2, 2014

Blue Mix Developed Projects

BlueMix Instance URL
https://ace.stage1.ng.bluemix.net/?ssoLogout=true

Omkar Nimbalkar on BlueMix
https://www.youtube.com/watch?v=2LKOwZtW5ao#t=76?ce=ism0070&ct=is&cmp=ibmsocial&cm=h&cr=crossbrand&ccy=us

Hotel Application using the Rules service

Analytics Service on BlueMix
http://www.ibm.com/developerworks/library/bd-ruby-bluacceleration-app/index.html?ca=drs-

Getting started with IBM Gamification for BlueMix!
IBM Gamification for Blue Mix

Git Hub Getting started
Getting started with Git Hub

Git Hub for Windows
Git Hub for Windows Setup

Bus Simulator Project

Bus Simulator Demo Live Link

Build and Deploy a REST API on IBM Blue Mix with PHP and MySQL
build-and-deploy-a-rest-api-on-ibm-bluemix-with-php-and-mysql/

Building a Web App
Steps to build a web app

Sentiment Analysis App
Sentiment Analysis App

Automate Famo.us mobile apps with Cloudant on Bluemix
http://www.ibm.com/developerworks/cloud/library/cl-bluemix-famous-mobile/index.html?ce=ism0070&ct=is&cmp=ibmsocial&cm=h&cr=crossbrand&ccy=us

Animate Images in a node.js web app
http://www.ibm.com/developerworks/cloud/library/cl-animate-images-app/index.html?ce=ism0070&ct=is&cmp=ibmsocial&cm=h&cr=crossbrand&ccy=us

Image Rotator Source Code
https://hub.jazz.net/project/nathviswa/ImageRotator/overview#https://hub.jazz.net/project/nathviswa/ImageRotator/nathviswa%2520%257C%2520ImageRotator/_V1xiYAAwEeSgjb7zPlBjjw/_V2LyEAAwEeSgjb7zPlBjjw/index.ejs

My Image Rotator Source Code
https://hub.jazz.net/project/sonia14/MyImageAnimator/settings/options

Do it yourself: Build a remote surveillance app using Bluemix, Cloudant, and Raspberry Pi
http://www.ibm.com/developerworks/library/ba-remoteservpi-app/index.html?ce=ism0070&ct=is&cmp=ibmsocial&cm=h&cr=crossbrand&ccy=us

Build a time-control app using iBeacons and the IBM MobileData service
http://www.ibm.com/developerworks/mobile/library/mo-bluemix-ibeacons/index.html?ce=ism0070&ct=is&cmp=ibmsocial&cm=h&cr=crossbrand&ccy=us

Dev Ops Repository Links

env-javaweb

REST Products API

Calorie Counter Demo App

Initial Days with Git Hub

This article talks about how we can fork a repository on Git Hub.
Fork a Git Hub Repository

Getting started with the Spoon/Knife project on GitHub
Spoon-Knife Sample Project

Monday, June 30, 2014

Custom Sorting in a Dojo Grid using ItemFileRead/Write store

First understand the below example to see how to plug a grid to a store.

https://www.ibm.com/developerworks/web/library/wa-aj-dojogrid/

Then to sort alphabetically, based on locale use the code below

http://stackoverflow.com/questions/12219192/custom-column-sorting-in-dojo-datagrid-programmatically

              queryGrid.setStore(new dojo.data.ItemFileReadStore(response[responseResult]));  
              setCustomSort(queryGrid.store);

Define the sort function as below :

              function setCustomSort(store){
                               if(!store.comparatorMap){
                                       store.comparatorMap = {};
                              }
                              store.comparatorMap["name"] = function (a, b) { 
                              return a.localeCompare(b);
                     }

For custom sort by date, refer the link below.

http://stackoverflow.com/questions/3967214/dojox-grid-datagrid-custom-sort-method

Saturday, June 28, 2014

Adding N-Relate to your blog posts!

Want to know how to add the "You-may-also-like" option to your blog? Read on..

http://blogtimenow.com/blogging/setup-nrelate-related-posts-linkwithin-alternative/

Friday, June 27, 2014

Google Gesture!

Watch this Video on Google Gesture!
Connecting people !!

Post by Wonderful Engineering.

Thursday, June 26, 2014

Piecing Together Blue-Mix

Download CF CLI (Cloud Foundry Command Line Interface) from here!

https://github.com/cloudfoundry/cli/releases

Installing the CF CLI.. Checking if you've set it up successfully
http://docs.cloudfoundry.org/devguide/installcf/install-go-cli.html

Logging into BlueMix through CF CLI

Super easy ! Just follow the steps mentioned here :
https://www.stage1.ng.bluemix.net/docs/#starters/BuildingWeb.html#login_bluemix

On successful completion :

Understanding the Blue Mix UI : Watch this video to quickly understand what Blue Mix is capable of!

http://www.youtube.com/watch?v=i_-exOUGmyw&ce=ism0070&ct=is&cmp=ibmsocial&cm=h&cr=crossbrand&ccy=us

Sunday, December 7, 2014

Friday, December 5, 2014

Friday, November 28, 2014

Wednesday, November 26, 2014

Thursday, October 30, 2014

Wednesday, October 8, 2014

Tuesday, October 7, 2014

Thursday, September 11, 2014

Tuesday, September 9, 2014

Thursday, September 4, 2014

Tuesday, September 2, 2014

Wednesday, August 27, 2014

Monday, August 25, 2014

Sunday, August 24, 2014

Thursday, August 21, 2014

Wednesday, August 20, 2014

Tuesday, August 19, 2014

Sunday, August 17, 2014

Friday, August 15, 2014

Wednesday, August 13, 2014

Tuesday, August 12, 2014

Monday, August 11, 2014

Syntax

Native Mode Syntax

Java Mode Syntax

3. cont Command

Syntax

4. detach Command

Native Mode Syntax

Sunday, August 10, 2014

Saturday, August 9, 2014

Friday, August 8, 2014

Tuesday, July 15, 2014

Friday, July 11, 2014

Thursday, July 10, 2014

Tuesday, July 8, 2014

Friday, July 4, 2014

Thursday, July 3, 2014

Wednesday, July 2, 2014

Monday, June 30, 2014

Saturday, June 28, 2014

Friday, June 27, 2014

Thursday, June 26, 2014

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