SoftwareAndMe's Blog

Install Mulp on Linux

softwareandme — Tue, 21 Dec 2010 17:12:12 +0000

Mulp is developed with C++ and Wx and libxml++ is used for xml parsing, so we need Wx widgets and libxml++.

Wx widgets, http://www.wxwidgets.org
Libxml++, http://libxmlplusplus.sourceforge.net

After installing Wx widgets and libxml++, download mulp source from http://sourceforge.net/projects/mulp

Open the tar ball of mulp

tar xzvf mulp-0.0.1.tar.gz

then cd to mulp directory

cd mulp-0.0.1
./autogen.sh
./configure
make

and

make install

if you are using ubuntu or fedora or a distro with sudo

sudo make install

You installed the mulp software! Now try to run mulp from command line or with Alt+F2 on Kde and Gnome.

Mulp as Ubuntu Control Panel – xml file

softwareandme — Tue, 21 Dec 2010 17:10:08 +0000

Mulp may be used as Ubuntu Control Panel by editing its xml file, the default xml file for Mulp has the applications for Ubuntu. After installing mulp on ubuntu you will see you can use it as the Ubuntu Control Panel.

/etc/mulp/mulp.xml file must be changed like this to use mulp as Ubuntu Control Panel



	
		
			Onur GUZEL onur.oguzel@gmail.com
		
		0.0.1
		http://mulp.sourceforge.net
		Truva Control Panel
	
	
		plugins
		
		
		/usr/share/mulp/images/truvalinux.png
		
		
		
	
	
		
			
				Online Update
				Install and Remove Software
				Boot
				Startup Applications
				Software Sources
				Clean Computer
			
		
		
			
				Bluetooth
				Drivers
				Disk Utility
				Keyboard
				Monitors
				Mouse
				Sound
				Startup Disk
				Printing
				Power Management
			
		
		
			
				Login Screen
				Log File Viewer
				System Monitor
				Time and Date
				Users and Groups
				System Testing
			
		
		
			
				Network Setting
				Network Connections
				Personal File Sharing
				Network Proxy
				Remote Desktop
				Bluetooth
			
		
		
			
				Accessibility
				Language Support
				Keyboard Layout
				Keyboard Shortcuts
			
		
		
			
				Theme
				Compiz Configuration
				Main Menu
				Nautilius Configuration
				Screensaver
				Windows

Mulp Editing xml file

softwareandme — Tue, 21 Dec 2010 16:42:03 +0000

Mulp is easy to configure and we will discuss what we can do with mulp by editing its xml.

Mulp xml is located under

/etc/mulp/mulp.xml



	
		
			Onur GUZEL onur.oguzel@gmail.com
		
		0.0.1
		http://mulp.sourceforge.net
		Truva Control Panel
	
	
		plugins
		
		
		/usr/share/mulp/images/truvalinux.png
		
		
		
	
	
		
			
				Online Update
				Install and Remove Software
				Boot
				Startup Applications
				Software Sources
				Clean Computer
			
		
		
			
				Bluetooth
				Drivers
				Disk Utility
				Keyboard
				Monitors
				Mouse
				Sound
				Startup Disk
				Printing
				Power Management
			
		
		
			
				Login Screen
				Log File Viewer
				System Monitor
				Time and Date
				Users and Groups
				System Testing
			
		
		
			
				Network Setting
				Network Connections
				Personal File Sharing
				Network Proxy
				Remote Desktop
				Bluetooth
			
		
		
			
				Accessibility
				Language Support
				Keyboard Layout
				Keyboard Shortcuts
			
		
		
			
				Theme
				Compiz Configuration
				Main Menu
				Nautilius Configuration
				Screensaver
				Windows

It is not so difficult, you will see so dont be afraid of xml file. We will give you detailed information about xml file.

Mulp file starts with mulp tag and ends with mulp tag.

Mulp – Multi Purpose Software Panel

softwareandme — Tue, 21 Dec 2010 16:37:23 +0000

I ‘ve developed an open source software, mulp – multi purpose software panel. Mulp was an effort to develop a control center for Truva Linux, but after i finished the software i realized that i always need a software panel when i develop desktop applications. I decided to make it easy-to-configure and usable in every platform where a software panel is needed.

Mulp is a multi purpose software panel developed in C++ and Wx. It is easy to configure to build your own control panels. Distribution developers will be able to use mulp in their distributions easily. Project is open source and hosted in http://sourceforge.net/projects/mulp

In first version of mulp, there are no plugins, you are able to run the installed programs on your system by editing mulp.xml. In later releases mulp will have the ability to load dynamic plugins, inşAllah.

You may change the mulp into another software panel by editing its xml file, an ubuntu control center application, truva linux control center application, a redhat control center application, sabily control center application… You dont need to edit the source code, you must just edit xml and then you will have your new software panel for your distribution.

Php object oriented programming with design patterns

softwareandme — Sat, 25 Sep 2010 11:11:40 +0000

There are some certain designs in software development like in designing an aircraft. While designing an aircraft designers use some patterns, for example there is a pattern for landing gears. They are located under the aircraft and they have supports which are joint to the fuselage. Designer does not have to design a landing gear from scratch, if it is not needed, because he knows what is the pattern of a landing gear. Patterns are like templates while designing and building an automobile or aircraft.

Software developers also need patterns for building their software projects like in other engineering disciplines. People say that Php is not suitable for object oriented programming in their blogs, it is not true! Php gives you chance to develop in procedural concept or in oop concept. Sometimes you need procedural programming though (but dont use procedural programming a lot in your oop projects it will turn your code to spaghetti code, just use where you have to use procedural programming). I used java which is known as the most suitable programming language for oop, but when you see a Main function to run your program people who say php is not a suitable language for oop may think about this about other oop languages like java,c++. This is not true again all of these languages try to make their job, there is not a better or worse programming language. There are programming languages which are suitable for your needs and which are not suitable.

I use object oriented programming in my projects with design patterns they help you to solve some problems in an efficient and fast way.

In php.net site we see some patterns like factory and singleton design patterns, this is really cool, just look at the code dont try to understand if you do not know abything about design pattern i will explain what are design patterns and when we should use them.

class Example
{
    // The parameterized factory method
    public static function factory($type)
    {
        if (include_once 'Drivers/' . $type . '.php') {
            $classname = 'Driver_' . $type;
            return new $classname;
        } else {
            throw new Exception('Driver not found');
        }
    }
}

Php Operators (3)

softwareandme — Wed, 21 Apr 2010 20:00:42 +0000

Php operators are grouped in some sections, we gave the common operators in our previous article;

Assignment
Arithmetic
Comparison
Logical
String
Bitwise
Error control
Execution
Incrementing / decrementing
Array
Type

What is an operator?
If you want to change a variables value, multiply two numbers, compare two variables you use operators. Operators do operations on variables and sometimes you use them in your functions also.

Assignment Operators
They set the left operands value from its right. If you assign a value to a varible you use = (equals) operator. $variable = 1453; It means assign 1453 to variable.

Arithmetic Operators
They are used for arithmetic operations like adding,subtracting,modulus and multiplying.

-$a	Negation	Opposite of `$a`.
$a + $b	Addition	Sum of `$a` and `$b`.
$a – $b	Subtraction	Difference of `$a` and `$b`.
$a * $b	Multiplication	Product of `$a` and `$b`.
$a / $b	Division	Quotient of `$a` and `$b`.
$a % $b	Modulus	Remainder of `$a` divided by `$b`.

$variable = (((3+7)*9+9)*10)%10;

$variable’s value is 0

$variable = 97%7;

$variable is 6

Comparison Operators
Used for comparing two values, they do not assign anything just compare the values. You may use comparison operators on different types of variables, like comparing string and integer variables, since php is a loosely typed language php does not give you any error, but you should be careful about comparing two variables. If you just want to check if a variable has “FALSE” boolean value you may try to use ($c == false), but if $c is 0 then comparison will be true but that s not what you expect! Ok, no problem php has a solution for this you may always try === for checking for variable type and value. Comparison operators are used everywhere in your code, if you are new to programming just learn them very well.

$a == $b	Equal	TRUE if `$a` is equal to `$b`.
$a === $b	Identical	TRUE if `$a` is equal to `$b`, and they are of the same type. (introduced in PHP 4)
$a != $b	Not equal	TRUE if `$a` is not equal to `$b`.
$a <> $b	Not equal	TRUE if `$a` is not equal to `$b`.
$a !== $b	Not identical	TRUE if `$a` is not equal to `$b`, or they are not of the same type. (introduced in PHP 4)
$a < $b	Less than	TRUE if `$a` is strictly less than `$b`.
$a > $b	Greater than	TRUE if `$a` is strictly greater than `$b`.
$a <= $b	Less than or equal to	TRUE if `$a` is less than or equal to `$b`.
$a >= $b	Greater than or equal to	TRUE if `$a` is greater than or equal to `$b`.

Logical Operators
We use them for logical operations like xor,and, not,or, they return boolean values

$a and $b	And	TRUE if both `$a` and `$b` are TRUE.
$a or $b	Or	TRUE if either `$a` or `$b` is TRUE.
$a xor $b	Xor	TRUE if either `$a` or `$b` is TRUE, but not both.
! $a	Not	TRUE if `$a` is not TRUE.
$a && $b	And	TRUE if both `$a` and `$b` are TRUE.
$a \|\| $b	Or	TRUE if either `$a` or `$b` is TRUE.

String Operators
Php has two string operators one of them is string concatenation operator and the other one is concatenating assignment operator.
String concatenating operator is . , and used for concatenating two strings.

$string_me    = 'Izmir';
$string          = 'Istanbul';
$string_new   = 'Eskisehir';
$string_concat = $string_me.$string.$string_new; //concats,adds, strings to each other $string_concat is 'IzmirIstanbulEskisehir'

String concatenating assignment operator is .= , it appends argument on the right to the argument left.

$string = 'C++'; //$string value is 'C++'
$string .= ' PHP'; // PHP is appended to $string , new value of the $string is 'C++ PHP'

Bitwise operators
Bitwise operators are used to evaluate and manipulate of specific bits within an integer. Multiplying by two and dividing by two can be made by bit shifting in Php with bitwise operators.

`$a & $b`	And	Bits that are set in both `$a` and `$b` are set.
`$a \| $b`	Or (inclusive or)	Bits that are set in either `$a` or `$b` are set.
`$a ^ $b`	Xor (exclusive or)	Bits that are set in `$a` or `$b` but not both are set.
`~ $a`	Not	Bits that are set in `$a` are not set, and vice versa.
`$a << $b`	Shift left	Shift the bits of `$a` `$b` steps to the left (each step means “multiply by two”)
`$a >> $b`	Shift right	Shift the bits of `$a` `$b` steps to the right (each step means “divide by two”)

Error Control Operators

@ is the php error control operator which is used to ignore any error messages in expressions. If it is used in an expression (we put it inf front of expressions) error messages caused by expression will not be showed. I dont suggest this operator, dont try to use it. Dont try to hide errors or notices with @ operator. Try to solve your problems and then use error_reporting function or php.ini file to set your error reporting level.

$variable = @$_SESSION[$key]; //will not show you a notice if the index $key does not exist

Execution operators

Php uses backticks “ as execution operators, you may run any command by using execution operators. It is dangerous to use backticks to run commands on your system, be careful about backticks.

$showme = `ls /var/www`;
echo $showme;

Incrementing / decrementing operators

++$a	Pre-increment	Increments `$a` by one, then returns `$a`.
$a++	Post-increment	Returns `$a`, then increments `$a` by one.
–$a	Pre-decrement	Decrements `$a` by one, then returns `$a`.
$a–	Post-decrement	Returns `$a`, then decrements `$a` by one.

Array operators

$a + $b	Union	Union of `$a` and `$b`.
$a == $b	Equality	TRUE if `$a` and `$b` have the same key/value pairs.
$a === $b	Identity	TRUE if `$a` and `$b` have the same key/value pairs in the same order and of the same types.
$a != $b	Inequality	TRUE if `$a` is not equal to `$b`.
$a <> $b	Inequality	TRUE if `$a` is not equal to `$b`.
$a !== $b	Non-identity	TRUE if `$a` is not identical to `$b`.

Type operators
İnstance of is used as type operator, if we want to know if an object is instantiated from a certain class we use instanceof.

class Aircraft
{
}
class Airbus extends Aircraft
{
}

class Boeing extends Aircraft
{
}

$airbus = new Airbus();
$boeing = new Boeing();

if($airbus instanceof Airbus)
{
        echo "airbus object is instance of the Airbus class\n";
}
else
{
        echo "airbus object is not instance of Airbus class";
}

if($boeing instanceof Airbus)
{
        echo "boeing object is instance of Airbus class";
}
else
{
        echo "boeing object is not instance of Airbus class\n";
}

Output:
airbus object is instance of the Airbus class
boeing object is not instance of Airbus class

Php has three types of operators

Unary operators : They operate on one value, like !,++,–
Binary operators : They operate on two value, like assignment, increment and assignment, comparison, multiplying
Tertiary operator : ?: It is used for comparison, it is used like in here ( $compare_me == $compare_me_second ) ? $we_are_same : $no_we_are_not_same; If $compare_me and $compare_me_second are same it returns $compare_me

Php Syntax And Variables (2)

softwareandme — Wed, 21 Apr 2010 19:24:46 +0000

Hi,

We are going to learn php syntax and variables on this article.

We have talked about php syntax on the first php article, the syntax looks like c,c++,java and if you know one of these languages’ syntax it will be easy to learn php syntax.

Php is a scripting language and we must say to its interpreter where the php code begins and where it ends. We use to tell the php interpreter it is a php script and it should interprets the script among these tags.

//: Double slashes means this line will not be interpreted by the interpreter, this line wont run , it is used for comment lines. Comment lines may be used to add extra information about the code, adding todo item, informing your colleagues about the code, etc.

Before starting php syntax again we should look at what are variables and how can we define them. Variable stores data in it, variable name is a symbolic name associated with a value. Php has different variable types but php dont use them to define variables’ types. Php knows type of variable according to its value.If you assign a string to a variable then you may assign an integer and again you may assign an object to the variable.

If you try to do this on C++ you have to use type casting. Php is a loosely typed language because of this feature.

Php variables have $ sign in front of them. The second character of the variable i mean the character after $ sign must be a letter or underscore. Variable stores data so we should know how to assign data to a variable, we assign data to a variable by = (equals) sign. Equals assigns from right to the left, what does it mean? It means = (equals) gets the value from its right and puts it into its left. Php uses ; sign to assign values,references to variables, run functions.

Php uses { } bracets for code blocks, code block is a piece of code which does something (multiply two numbers, checking if user has logged in etc), we write code inside { and } tags in code blocks. Code blocks are used in comparisons, functions, class methods, class declarations.

In programming languages there are operators for making some processes on variables,functions,objects, like multiplying two numbers, assigning an object as a reference, comparing two strings etc. The next article describes php operators so please try to understand the operators which are located below;

Arithmetic Operators

Operator	Description	Example	Result
+	Addition	x=2 x+2	4
-	Subtraction	x=2 6-x	4
*	Multiplication	x=4 x*3	12
/	Division	8/2 16/4	4 4
%	Modulus (division remainder)	7%2 10%8 10%2	1 2 0
++	Increment	x=7 x++	x=8
–	Decrement	x=7 x–	x=6

Assignment Operators

Operator	Example	Is The Same As
=	x=y	x=y
+=	x+=y	x=x+y
-=	x-=y	x=x-y
*=	x*=y	x=x*y
/=	x/=y	x=x/y
.=	x.=y	x=x.y
%=	x%=y	x=x%y

Comparison Operators

Operator	Description	Example
==	is equal to	4==8 returns false
!=	is not equal	4!=8 returns true
<>	is not equal	4<>8 returns true
>	is greater than	4>8 returns false
<	is less than	4<8 returns true
>=	is greater than or equal to	4>=8 returns false
<=	is less than or equal to	4<=8 returns true

Logical Operators

Operator	Description	Example
&&	and	x=6 y=3 (x < 10 && y > 1) returns true
\|\|	or	x=6 y=3 (x==4 \|\| y==4) returns false
!	not	x=6 y=3 !(x==y) returns true

Operator

Description

Example

and

x=6
y=3

(x < 10 && y > 1) returns true

x=6
y=3

(x==4 || y==4) returns false

not

x=6
y=3

!(x==y) returns true

There are also different operators in php we try to explain them in our next article.

Php Programming Language (1)

softwareandme — Tue, 20 Apr 2010 02:20:43 +0000

Hi,

I was so busy so i could not write any content to my blog as i promised. I will try to describe what is Php and how,when and why should you use it. I am writing the tutorial from scratch and if i have some typos or errors on my tutorials please let me know.

First of all, Php is a programming language and it is a scripting language which means it is not compiled to machine code directly it is interpreted from source code or byte code. It is originally designed for web development to produce dynamic web pages by Rasmus Lerdorf in 1995, it was called Personal Home Page. Php is developed in C language, php extensions are developed in C also, we will try to look at developing php extensions later. Zeev Suraski and Andi Gutmans developed the parser and changed the name of the language to Php Hypertext Preprocessor. They also rewrote the core of Php and named it Zend Engine and founded Zend Technologies.

Php syntax looks like C syntax. Before Php 4 the language did not have any Object Oriented Programming features, with Php 4 some limited OOP features were added to the language. Php 5 brought a lot of OOP features, if you want to look at some of these features please http://php.net.

This is the first article and its aim is giving background information about Php, but we may look at php syntax, it is not too early to look at php syntax.

$message = 'Hello world!';
echo $message;
?>

Script assigns a string value to a variable
Then echo prints the variable’s value

Output: Hello world!
What is variable? What is echo? What is ? You are right we will discuss them in our next post.

Hope you like the article about introduction to php

Software Development Life Cycle

softwareandme — Tue, 20 Oct 2009 14:00:31 +0000

I have found some good images on internet related to software development life cycle

Some good bass songs

softwareandme — Tue, 20 Oct 2009 13:35:44 +0000

I asked this question when i first bought a bass guitar, i should add some songs here. Dont try to play songs just try to learn how to play a bass guitar. Learn the theory and then practice all the time then you can play any song you want to play, I will try to add good songs which have good bass riffs and lead bass guitars in them.

Metallica – Orion
Metallica – My friend of misery
Metallica – Anesthesia
Doobie Brothers – Long train running
Queen – Another one bites the dust
Iron maiden – Powerslave
Iron maiden – Wasting love
Megadeth – Dawn Patrol
Megadeth – This was my life
Megadeth – A tout le monde
Larry king – Stand by Me
Baris Manco – Donence
Baris Manco – Gulpembe
RHCP – Snow
RHCP – (All of the songs )

These are the songs i like lead bass in them.

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