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What is Cocoa [Apple Programing Languages]

2011-06-27T23:17:00.000-07:00

For who interest to develop an aplication can work on Iphone or Ipad, cocoa is one of programing language can handle this.
But theris lottof problem to make application whit this programing language because documentation is not like other language, we can find anywhere. Cocoa special programing language look like all of apple product always exclusive also their programing.

What is cocoa ?
Cocoa is an application environment for both the Mac OS X operating system and iOS, the operating system used on Multi-Touch devices such as iPhone, iPad, and iPod touch. It consists of a suite of object-oriented software libraries, a runtime system, and an integrated development environment.

This chapter expands on this definition, describing the purpose, capabilities, and components of Cocoa on both platforms. Reading this functional description of Cocoa is an essential first step for a developer trying to understand Cocoa.

A Brief History of Linux

2011-06-25T22:41:00.001-07:00

The term Linux is commonly used to refer to the entire UNIX-like operating sys-
tem of which the Linux kernel forms a part. However, this is something of a misno-
mer, since many of the key components contained within a typical commercial
Linux distribution actually originate from a project that predates the inception
of Linux by several years.

Strace Command On Linux

2011-06-22T22:29:00.000-07:00

saaujiro@saaujiro-sakabato:~$ strace -e trace=open,close date

When using command in above techniques, we need to be aware that, in a few cases,
the true name of a system call differs from the name of its glibc wrapper. For example,
though we refer to all of the wait()-type functions as system calls in Chapter 26, most of
them (wait(), waitpid(), and wait3()) are wrappers that invoke the kernel’s wait4()
system call service routine. This latter name is displayed by strace, and we must
specify that name in the –e trace= option. Similarly, all of the exec library functions
(Section 27.2) invoke the execve() system call. Often, we can make a good guess
about such transformations by looking at the strace output (or looking at the output
produced by strace –c, described below), but, failing that, we may need to check the glibc
source code to see what transformations may be occurring inside wrapper functions.
The strace(1) manual page documents a host of further options to strace, includ-
ing the following:
Output are here

saaujiro@saaujiro-sakabato:~$ strace -e trace=open,close date
open("/etc/ld.so.cache", O_RDONLY)      = 3
close(3)                                = 0
open("/lib/i386-linux-gnu/librt.so.1", O_RDONLY) = 3
close(3)                                = 0
open("/lib/i386-linux-gnu/libc.so.6", O_RDONLY) = 3
close(3)                                = 0
open("/lib/i386-linux-gnu/libpthread.so.0", O_RDONLY) = 3
close(3)                                = 0
open("/usr/lib/locale/locale-archive", O_RDONLY|O_LARGEFILE) = 3
close(3)                                = 0
open("/etc/localtime", O_RDONLY)        = 3
close(3)                                = 0
Thu Jun 23 12:26:24 WIT 2011
close(1)                                = 0
close(2)                                = 0

File ownership and permissions

2011-06-22T01:33:00.000-07:00

Each file has an associated user ID and group ID that define the owner of the file
and the group to which it belongs. The ownership of a file is used to determine the
access rights available to users of the file.
For the purpose of accessing a file, the system divides users into three catego-
ries: the owner of the file (sometimes termed the user of the file), users who are
members of the group matching the file’s group ID ( group), and the rest of the
world (other). Three permission bits may be set for each of these categories of user
(making a total of nine permission bits): read permission allows the contents of the
file to be read; write permission allows modification of the contents of the file; and
execute permission allows execution of the file, which is either a program or a script
to be processed by some interpreter (usually, but not always, one of the shells).
These permissions may also be set on directories, although their meanings are
slightly different: read permission allows the contents of (i.e., the filenames in) the
directory to be listed; write permission allows the contents of the directory to be
changed (i.e., filenames can be added, removed, and changed); and execute (some-
times called search) permission allows access to files within the directory (subject to
the permissions
From Book The Linux Programming inTerface

Superuser Linux

2011-06-21T13:42:00.001-07:00

Superuser
One user, known as the superuser, has special privileges within the system. The
superuser account has user ID 0, and normally has the login name root. On typical
UNIX systems, the superuser bypasses all permission checks in the system. Thus,
for example, the superuser can access any file in the system, regardless of the per-
missions on that file, and can send signals to any user process in the system. The
system administrator uses the superuser account to perform various administrative
tasks on the system.

Gambas and Mysql

2011-06-21T10:57:00.000-07:00

How to make connection from gambas to mysql, you can try like this way

PUBLIC konek AS NEW Connection
PUBLIC PROCEDURE Connect()
konek = NEW Connection
konek.Type = "mysql"
konek.Host = "localhost"
konek.Login = "databaseuser"
konek.Password = "pasword"
konek.Name = "databasename"
konek.Open
END

That all you need if you wanna make connection in gambas, so just try. Gambas is so easy and I think for easy than visual basic in windows

Interface Programing in Linux

2011-06-21T07:20:00.000-07:00

Using the programming interface from other languages
Although the example programs are written in C, you can use the interfaces described
in this book from other programming languages—for example, compiled languages
such as C++, Pascal, Modula, Ada, FORTRAN, D, and scripting languages such as
Perl, Python, and Ruby. (Java requires a different approach; see, for example,
[Rochkind, 2004].) Different techniques will be required to obtain the necessary
constant definitions and function declarations (except in the case of C++), and some
extra work may be needed to pass function arguments in the manner required by C
linkage conventions. Notwithstanding these differences, the essential concepts are
the same, and you’ll find the information in this book is applicable even if you are
working in another programming language.

Embedded Linux Development

2011-06-20T23:22:00.000-07:00

Wow, linux foundation open new class for Embedded linux development, this is nice information for you who interested with embedded system. Course ''ll make you more execelent for embedded system

Course Description

Embedded Linux Development is designed to give experienced programmers a solid understanding of adapting the Linux kernel and customized user-space libraries and utilities to embedded applications such as those in use in consumer electronics, military, medical, industrial, and auto industries. This five day course includes extensive hands-on exercises and demonstrations designed to give you the necessary tools to develop an embedded Linux device. Upon mastering the material you will have a basic understanding of

Command Line User Interface or Graphical User Interface

2011-06-20T09:48:00.000-07:00

what is the difference of these two interfaces? ya very clear course. Command line is not user friendly and more suitable for advanced users. Graphic user interface is very friendly to users, is easily understood by the novice user, as well as easy to learn more broadly, without reducing the functionality that we can use when using the commandline. Do you need a commandline ? yach ofcource you need a command line, because many applications that can not be accessed via graphic, for command line only.
Do you need to learn command fo linux ? Hmmm i think for ordinary users they don't need to learn command for linux, but for advanced user, that have to learn bicause like what i say in above, theris many applications can not be accessed via graphic

Think Diferent With Linux ???

2011-06-20T03:51:00.000-07:00

Many people think that linux users is different from that computer users in general. Is it like that happens? I said no, just the same linux users with computer users in general!. So why do many linux users who specialize them?. That's because Linux users who have advanced less likely to ask when it got into trouble with their operating system.
That means Linux users more independent than windows users. With the Linux, user can more freely to solve problems on their operating system with many options, including having to change the source code of their operating system. Linux Users experimented more freely than windows users or users of other operating systems that are closed its

Is Webmin Secure

2011-06-20T03:37:00.001-07:00

Web-based course is very vulnerable to actions that are not in want. Keep in mind that webmin works on a specific port, not based on a web server or port not working on a web server in general. This means that although not installed as an apache webserver, because webmin can be accessed by default open port 10000. To counteract the action sniffer, Webmin supports the use https (SSL)-based openssl. In addition, you still dapatmengkonfigurasi access webmin from any IP address. This is useful if you want someone who does not want to access webmin. in addition to setting the IP address, also adds to the ease of changing the port security webmin. In the webmin configuration you can specify from which addresses are allowed to access your webmin

Master Name Server

2011-06-20T03:26:00.000-07:00

Master name server is one kind of name server
This type of server meruoakan server that holds information of a zone. Eg example.com domain has a master server in exploit.target.com nah exploit.target.com inilaj called authoritative servers of example.com zone

Era of cybercrime has been Finished

2011-06-19T22:04:00.000-07:00

Statment form kaspersky abaut cyber creame
"Five years is 'the golden age of cybercrime', but I hope this year will end. Because, the police now really angry (on cybercrime)," said Eugene in a Security Analyst Summit held at the Kempinski Bahia, Malaga, "
Are yoy agree ? that defend of you. If you are look at the fact right now, you will see there is now word for finished, because system always evolve and also knowledge about system always grow up. That statment form kaspersky theris no fact! because we can see from from the fact of cyber cream in this word, also about sony site hacking by Anonymous. SO you believe with the fact or statement from kaspersky ?? that up to you what you 'll believe

Computer For Personal

2011-06-19T00:12:00.000-07:00

Computer in this era is very important, so every body use computer to manage their needed, what ever kind of their job. Begin from abaut house, office also just for play a some game now use computer. In this era lot of kind of jobs use computer. I think theris little jobs don't need computer.
Behind all function from computer, theris lot of trouble when we use computer, that is impact dependencies from technology. But without technology our jobs need long time 'll finish, because computer help us to make easy our jobs...
I quote from wikipedia abaut personal computer
"A personal computer is any general-purpose computer whose size, capabilities, and original sales price make it useful for individuals, and which is intended to be operated directly by an end-user with no intervening computer operator. In contrast, the batch processing or time-sharing models allowed large expensive mainframe systems to be used by many people, usually at the same time. Large data processing systems require a full-time staff to operate efficiently.
Software applications for personal computers include word processing, spreadsheets, databases, Web browsers and e-mail clients, digital media playback, games, and myriad personal productivity and special-purpose software applications. Modern personal computers often have connections to the Internet, allowing access to the World Wide Web and a wide range of other resources. Personal computers may be connected to a local area network (LAN), either by a cable or a wireless connection. A personal computer may be a desktop computer or a laptop, tablet PC, or a handheld PC.
While early PC owners usually had to write their own programs to do anything useful with the machines, today's users have access to a wide range of commercial and non-commercial software, which is provided in ready-to-run or ready-to-compile form. Since the 1980s, Microsoft and Intel have dominated much of the personal computer market, first with MS-DOS and then with the Wintel platform. Alternatives include Apple's Mac OS X and the open-source Linux OS.^[1] Applications and games for PCs are typically developed and distributed independently from the hardware or OS manufacturers, whereas software for many mobile phones and other portable systems is approved and distributed through a centralized online store."