How to use Plug2Surf Tata Indicom USB Modem in Fedora Linux 6
Please following the below following steps to use the tata indicom plug2surf USB modem in
Fedora Core Linux 6:
1. Type the below command on the command prompt in a terminal
$wvdialconf /etc/wvdial.conf
The wvdial.conf file is created and you will see some messages aswell.
2. Edit the wvdial.conf file in your favortite editor and should like below when done
[Dialer Defaults]
Modem = /dev/ttyACM0
Baud = 460800
Init1 = ATZ
Init2 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
Init3 = at+crm=1
Stupid MODE=1
ISDN = 0
Modem Type = USB Modem
Phone = #777
Username = internet
Password = internet
3. Copy the resolv.conf into the /etc/ folder to be on safe-side.
cp /etc/ppp/resolv.conf /etc/
4. Plug-in the modem and just type the below command and the dialer will start.
$wvdial
You are ready to surf the internet now !!!
Saturday, May 30, 2009
Wednesday, March 11, 2009
Oh My Jar Oh My Jar !!!
How do you know or ensure that your Enterprise Java Application is performing well ?
As per me I usually load "mata.jar" and "believer.jar" in the classpath and it is working quite well right now.
Looks like it is my first lesson in Computational Theology.
As per me I usually load "mata.jar" and "believer.jar" in the classpath and it is working quite well right now.
Looks like it is my first lesson in Computational Theology.
Wednesday, February 04, 2009
Hiroshima & Nagasaki : A QA Engineer's Perspective
Is Test Automation essential ?
Test Automation is very essential especially in regression testing of software systems. This question is similar to one like "How important is the manufacturing some product using a machine vs hand made ?". We cannot compare test done by a machine (a computer/ automated test) with a Manual Test of a QA Engineer.
While developing or maintaing a critical application you have to be doubly sure that the software you develop and deploy is bug free. Hence when you automate the tests you as a software engineer will be confident that the software you have written is bug free (atleast of the forseen or known bugs).
When "Test Automation" seen from the perspective of a poor QA Engineer who does not reliaze the benefits of automating the tests would lead to frustrated life, which not only lead to his own bad health but might lead to severe consequences. The consequences which might be harmful to the whole society.
Who knows the great disaster of "Hiroshima and Nagasaki" was a consequence of a frustration of QA engineer who could not automate his regression tests !!!!!!
The reality really bites ................................... doesn't it ?
Is Test Automation essential ?
Test Automation is very essential especially in regression testing of software systems. This question is similar to one like "How important is the manufacturing some product using a machine vs hand made ?". We cannot compare test done by a machine (a computer/ automated test) with a Manual Test of a QA Engineer.
While developing or maintaing a critical application you have to be doubly sure that the software you develop and deploy is bug free. Hence when you automate the tests you as a software engineer will be confident that the software you have written is bug free (atleast of the forseen or known bugs).
When "Test Automation" seen from the perspective of a poor QA Engineer who does not reliaze the benefits of automating the tests would lead to frustrated life, which not only lead to his own bad health but might lead to severe consequences. The consequences which might be harmful to the whole society.
Who knows the great disaster of "Hiroshima and Nagasaki" was a consequence of a frustration of QA engineer who could not automate his regression tests !!!!!!
The reality really bites ................................... doesn't it ?
Saturday, January 31, 2009
What the fuck is GIS ?
GIS for a layman and for everyman who wants to lay !!!!
What is GIS ?
Some call it Geographic Info Systems, some call it Geographical
Information Systems, some people see it as a field of academic study
called GI Science. You even get a Master's and Doctorate in this field
of study.
Defining GIS is not a simple task. It is percieved differently by
different people. some people think it as a branch of IT, some think
it to be computer-assisted mapping systems, some as cartographic
application, a type of database systems or a ....... some of my friends
even thought of it as Girl Information System.... ;-)
I am not getting into Perception and cognitive science.....
My Cricket coach always asked me to go by the book. so I am going by
the definition in this book on "Concepts and Techniques of Geographic
Information Systems by C.P.Lo and Albert K. W. Yeung", which is
GIS is a set of computer-based systems for managing geographic data and
using these data to solve spatial problems.
As IT professionals I expect everyone of us to know what data and
information is all about. some of us even know what metadata is.
A question must arise in our minds that what is the need of yet another
Information system.
The speciality of GIS lies entirely in the data. Geographic data or
spatial data is special since it is multi-dimensional. The any other
form of data can be called as non-spatial or attribute data.
Some of our mechanical engineering friends might be thinking about the
CAD/CAM systems. GIS offers much more that a simple CAD/CAM system.
The other main interesting aspect lies in its ability to make the user
visualize spatial data in the terms of the maps they can produce, which
is the cartographic side of GIS. Which is missing in AUTOCAD.
Why does the multi-dimensionalness pose a challenge?
Some of our computer science friends must be well aware of the Balanced-Trees or the B-Trees.
These data structures are used in the context of RDBMS for the indexing or ordering of data or tuples in a table.
we all know that we can only index 1 column using 1 tree. I hope I am right here. This column is usually the Primary key.
As all the well know RDBMS are suited only for the non-spatial data.
Why cant it be used for spatial data. Since it is multi-dimensional.
As we all know we can represent a point P in 2-D space using cartesian coordinates using as (x,y).
We all are well aware of the fact that both x and y are independant of each other but the point P needs both x and y for it to be represented.
Let us take the problem of finding the nearest ATM from our office.
If we represent all the points of interest in this problem as a Points in 2-D space. It is a problem of ordering in 2-D space.
Some mathematicians might argue that is a problem of topology !!!
Hence a Spatial Analysis problem. Can we use B-Trees for this ? No ...
so we need a new kind of a data structure for this which is called an
R-Tree. Hence the databases also special and called spatial Databases.
We can order the data using R-Tree on the basis of radial distance and
find the nearest ATM.
So GIS is a about data, Information System, Cartographic System and a
Spatial Analysis tool.
Maps and GIS.
GIS as a cartographic application. GIS gives us the capability of
visualizing the spatial data and the spatial distribution of the
non-spatial data in terms of the maps they can produce. One of the most
important aspect when displaying a map is the Map Scale.
The scale of a map is the ratio or proportion between the distances
measured on the map and the corresponding distances measured on the
ground.
YOu can do the mathematics.
Classes of Maps
1) General Purpose or Reference maps: These are maps not designed for
any specific applications. This class of maps focus on locations and
shows a variety of physical and cultural features such as drainage,
roads, railways, airports, forest and cultivate areas etc. They server
as the base maps for developing and integrating other form of
geographic infomation.
2) Special Purpose or Thematic maps:
These maps are designed to depict a particular type of feature or
measurement only. Like it can show the variation of rainfall across
certain region. These maps are generated using the base maps.
GIS for a layman and for everyman who wants to lay !!!!
What is GIS ?
Some call it Geographic Info Systems, some call it Geographical
Information Systems, some people see it as a field of academic study
called GI Science. You even get a Master's and Doctorate in this field
of study.
Defining GIS is not a simple task. It is percieved differently by
different people. some people think it as a branch of IT, some think
it to be computer-assisted mapping systems, some as cartographic
application, a type of database systems or a ....... some of my friends
even thought of it as Girl Information System.... ;-)
I am not getting into Perception and cognitive science.....
My Cricket coach always asked me to go by the book. so I am going by
the definition in this book on "Concepts and Techniques of Geographic
Information Systems by C.P.Lo and Albert K. W. Yeung", which is
GIS is a set of computer-based systems for managing geographic data and
using these data to solve spatial problems.
As IT professionals I expect everyone of us to know what data and
information is all about. some of us even know what metadata is.
A question must arise in our minds that what is the need of yet another
Information system.
The speciality of GIS lies entirely in the data. Geographic data or
spatial data is special since it is multi-dimensional. The any other
form of data can be called as non-spatial or attribute data.
Some of our mechanical engineering friends might be thinking about the
CAD/CAM systems. GIS offers much more that a simple CAD/CAM system.
The other main interesting aspect lies in its ability to make the user
visualize spatial data in the terms of the maps they can produce, which
is the cartographic side of GIS. Which is missing in AUTOCAD.
Why does the multi-dimensionalness pose a challenge?
Some of our computer science friends must be well aware of the Balanced-Trees or the B-Trees.
These data structures are used in the context of RDBMS for the indexing or ordering of data or tuples in a table.
we all know that we can only index 1 column using 1 tree. I hope I am right here. This column is usually the Primary key.
As all the well know RDBMS are suited only for the non-spatial data.
Why cant it be used for spatial data. Since it is multi-dimensional.
As we all know we can represent a point P in 2-D space using cartesian coordinates using as (x,y).
We all are well aware of the fact that both x and y are independant of each other but the point P needs both x and y for it to be represented.
Let us take the problem of finding the nearest ATM from our office.
If we represent all the points of interest in this problem as a Points in 2-D space. It is a problem of ordering in 2-D space.
Some mathematicians might argue that is a problem of topology !!!
Hence a Spatial Analysis problem. Can we use B-Trees for this ? No ...
so we need a new kind of a data structure for this which is called an
R-Tree. Hence the databases also special and called spatial Databases.
We can order the data using R-Tree on the basis of radial distance and
find the nearest ATM.
So GIS is a about data, Information System, Cartographic System and a
Spatial Analysis tool.
Maps and GIS.
GIS as a cartographic application. GIS gives us the capability of
visualizing the spatial data and the spatial distribution of the
non-spatial data in terms of the maps they can produce. One of the most
important aspect when displaying a map is the Map Scale.
The scale of a map is the ratio or proportion between the distances
measured on the map and the corresponding distances measured on the
ground.
YOu can do the mathematics.
Classes of Maps
1) General Purpose or Reference maps: These are maps not designed for
any specific applications. This class of maps focus on locations and
shows a variety of physical and cultural features such as drainage,
roads, railways, airports, forest and cultivate areas etc. They server
as the base maps for developing and integrating other form of
geographic infomation.
2) Special Purpose or Thematic maps:
These maps are designed to depict a particular type of feature or
measurement only. Like it can show the variation of rainfall across
certain region. These maps are generated using the base maps.
Interoperability, SOA and National Integration
It is all about "INTEROPERABILITY" my friends.
when you have different components of a system built in various technologies you will have lot of problems in making an integrated system which is working.
Every Child in India understands it, very well I guess.
There is INTROP issues at every moment in your life once you step out of your house.
They say there are 2 sides to a coin. One can take something positively or negatively.
Just for example if a south indian boy likes a north indian girl, both parties might not go ahead with the marriage simply because of INTROP issues between both the families.
Then SOA ...comes into the rescue.
what it basically means ..either of the parties have to be so well architected that they perform as a webservice which will make possible this integration ...
As they say again there are 2 sides to a coin ...but there is also a third side side which is hidden ..and can be seen only by few of them ..who believe in multi-dimensionality of things.....
When you change the context ..and look at larger issues like National Integration .... you need More Web-services ..... that is SOA components ...
I am a strong supporter of SOA ...... it as some nice philosophy behind it ....
It is all about "INTEROPERABILITY" my friends.
when you have different components of a system built in various technologies you will have lot of problems in making an integrated system which is working.
Every Child in India understands it, very well I guess.
There is INTROP issues at every moment in your life once you step out of your house.
They say there are 2 sides to a coin. One can take something positively or negatively.
Just for example if a south indian boy likes a north indian girl, both parties might not go ahead with the marriage simply because of INTROP issues between both the families.
Then SOA ...comes into the rescue.
what it basically means ..either of the parties have to be so well architected that they perform as a webservice which will make possible this integration ...
As they say again there are 2 sides to a coin ...but there is also a third side side which is hidden ..and can be seen only by few of them ..who believe in multi-dimensionality of things.....
When you change the context ..and look at larger issues like National Integration .... you need More Web-services ..... that is SOA components ...
I am a strong supporter of SOA ...... it as some nice philosophy behind it ....
Friday, January 23, 2009
Sunday, October 19, 2008
For my fellow programming geeks i need not tell about this annoying keyword. My first experience with this goto was when I went to help one of my non-programmer seniors of mine in his bachelors project (in the year 1999). The task was to convert a legacy piece of software in early version of FORTRAN into C language. This code was full of GOTOs which made it possible for any human to read it. I tried my best to untangle the spaghetti code but failed miserable. So my response was simple GOTO: HELL. I am really greatful to Professor Dijkstra for removing this BadWord.
Monday, October 13, 2008
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