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Modern scenario of information technology:

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The modern scenario of information technology: Introduction: Information technology (IT) is the technology that merges the computing network system with high-speed communication links carrying any kind of data in the form of text, sound, images. and videos etc. Information can be defined as the facts and figures about anything that can transfer data of any kind. i.e. The know-how about any object of the universe that exists and plays its role in any network computer system. The system is any identified and known work that accepts data/information into itself, manipulates in the shape of certain output(s), and delivery so that it becomes useful and meaningful. Modern Scenario The modern impact of computer system Information Technology has broadened the base of comput ing and communication through satellite, fiber-optic, mobile phones. Thus enhancing the implications of this shift from single isolated technologies to a unified digital convergence and enabling the computer users to experi...
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Contiguous Allocation Method

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Contiguous Allocation Method  FILE LOCKING: The file locking mechanism provides functionality similar to reader-write locks. A reader-write lock requires specifying the mode of the lock-in their read and write access. When a process wishes to only read shared data, it requests the reader-writer lock in reading mode. Similarly, when a process wishes to modify the shared data. it must request the lock in write mode. File locking enables processes to implement exclusive access to a file. There are three major options for the implementation of the file.  A file can be locked as a whole or only a part of the file can be locked. A file may be locked for reading writing, modifying appending, etc. Most of the system provides both read and write locks. If a file is locked by a process for reading, then other processes can only read data from the file but the process cannot write new data into it (i,e write access by other process is defined) Similarly, if a file is locked by a process ...
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What are Linux Basic Commands?

What are Linux Basic Commands? LINUX COMMAND Some important Linux commands are as follows: The PWD Command: ''pwd'' stands for present working directory. This command shows the required name and location of the current directory in a list, which is the directory (also called a folder on some operating systems) in which the user is currently working a system. PWD [press Enter] The Is Command: The Is command displays the names of the files and directories in the current working directory. Several options are available for displaying details about the file. Basic Command for the Linux vi Editor: The vi started b y simply entering ''vi''(it is case sensitive) at the Linux prompt, and once started is excited using ESC:q! to abandon changes or SHIFT+ZZ (case sensitive) to save changes. If you want to edit (or create) a specific file uses the command ''vi/path-to-file/name-of-file''. The ''path-to-file'' must already exist as vi ...
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