In computer science, particularly in operating systems, a semaphore is a variable or abstract data type that is used for controlling access, by multiple processes, to a common resource in a parallel programming or a multi userenvironment. Semantics and implementation … Continue reading
To understand Interrupts in a general context, we can say that the Interrupts behaves same as the Signals for user space applications. Two Types of interrupts can be generated ? one is generated by the Processor control unit while executing … Continue reading
Piping is a process where the output of one process is made the input of another.In numerous applications there is clearly a need for these processes to communicate with each exchanging data or control information. Pipes can be used in threads and processes. A … Continue reading
What is pipe in our day to day life? Pipe is basically a connector to send any thing from one place to another. It has same meaning in Linux C. We create pipe to connect data flow from one process … Continue reading
For making a client server set up, you need to know how a child process create by parent process. A parent process makes a child process by using fork() system call. Fork (system call):- fork is an operation whereby a … Continue reading
Python is a general-purpose interpreted, interactive, object-oriented ,Platfom independent and high-level programming language. Python was created by Guido van Rossum in the late eighties and early nineties. Python source code is also now available under the GNU General Public License … Continue reading
Basic Signal Programming 1 What is a signal? Signals are generated when an event occurs that requires attention. It can be considered as a software version of a hardware interrupt Signal Sources: Hardware – division by zero Kernel – notifying … Continue reading
Python Python is a very simple language, and has a very straightforward syntax. It encourages programmers to program without prepared code. The simplest directive in Python is the “print” directive – it simply prints out a line and also includes … Continue reading
H.264 as video coding algorithm is important for broadcasting standards such as DVB-H and DMB. In comparison to its predecessors MPEG-2 and MEPG-4 SP/ASP, H.264 achieves improved compression efficiency at the cost of increased computational complexity. Real-time execution of the … Continue reading
Introduction The Linux IPC (Inter-process communication) facilities provide a method for multiple processes to communicate with one another. There are several methods of IPC available to Linux C programmers. These facilities, when used effectively, provide a solid framework for client/server … Continue reading
Why Linux Is More Secure Than Windows Article posted by——Rana Brijendra singh “Security through obscurity” may be a catchy phrase, but it’s not the only thing that’s catching among Windows users. The expression is intended to suggest that proprietary software … Continue reading
ENCRYPT a file: >>gpg -c filename then enter password & it will be saved as filename.gpg DECRYPT a file: >>gpg filename.gpg enter password and file is decrypted as filename
See what a python script can do!!
PROJECT TITLE: Multiple Data Compression and Encryption using Iterative Technique. Abstract: In digital forms of data storage, data can be represented by patterns of 0s and 1s. The more the patterns the more data can be compressed. Text may be … Continue reading
Multiple Data compresion is technique to compress more than 50 percent of the data,by using iteration methods in C language. before compession and decompession there are certain function we have to perform;- MASTER ARRAY Array is the collection of elements … Continue reading