Unix assignment help
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The document provides an overview of the UNIX operating system, detailing its origins, structure, and user commands. It highlights the role of the kernel and the shell in managing system resources, as well as different file types and directory functions. Additionally, it promotes Global Web Tutors' services for assignment help and online tutoring in various subjects, emphasizing their 24/7 support and discounts for returning customers.
Unix assignment help
- 2. UNIX is a computer Operating System which is capable of handling activities from multiple users at the same time. Unix was originated around in 1969 at AT&T Bell Labs by Ken Thompson and Dennis Ritchie. Global web tutors gives a very good understanding on Unix. The UNIX operating system is a set of programs that act as a interface between the computer and the user. The computer programs that allocate the system resources and coordinate all the details of the computer's internals is called the operating system or kernel.
- 4. The kernel is the heart of the operating system. It interacts with hardware and most of the tasks like memory management, tash scheduling and file management.
- 5. The shell is the utility that processes your requests. When you type in a command at your terminal, the shell interprets the command and calls the program that you want. The shell uses standard syntax for all commands. C Shell, Bourne Shell and Korn Shell are most famous shells which are available with most of the Unix variants.
- 6. There are various command and utilities which you would use in your day to day activities. cp, mv, cat and grep etc. are few examples of commands and utilities. There are over 250 standard commands plus numerous others provided through 3rd party software. All the commands come along with various optional options.
- 7. All data in UNIX is organized into files. All files are organized into directories. These directories are organized into a tree-like structure called the file system.
- 8. Type your userid at the login prompt, then press ENTER. Your userid is case-sensitive, so be sure you type it exactly as your system administrator instructed. Type your password at the password prompt, then press ENTER. Your password is also case-sensitive. If you provided correct userid and password then you would be allowed to enter into the system. Read the information and messages that come up on the screen something as below. login : amrood amrood's password: Last login: Sun Jun 14 09:32:32 2009 from 62.61.164.73 $
- 9. Just type logout command at command prompt, and the system will clean up everything and break the connection.
- 10. Ordinary Files − An ordinary file is a file on the system that contains data, text, or program instructions. In this tutorial, you look at working with ordinary files. Directories − Directories store both special and ordinary files. For users familiar with Windows or Mac OS, UNIX directories are equivalent to folders. Special Files − Some special files provide access to hardware such as hard drives, CD-ROM drives, modems, and Ethernet adapters. Other special files are similar to aliases or shortcuts and enable you to access a single file using different names.
- 11. Listing Directories : To list the files in a directory you can use the following syntax − $ls dirname Creating Directories : Directories are created by the following command − $mkdir dirname Removing Directories : Directories can be deleted using the rmdir command as follows − $rmdir dirname $ Changing Directories : You can use the cd command to do more than change to a home directory: You can use it to change to any directory by specifying a valid absolute or relative path. The syntax is as follows − $cd dirname $
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- 14. 24/7 live support. UNIX Assignment help Services. Online tutors & Online experts of Globalwebtutors. Affordable package for regular customers. Delivery before deadline. 10% additional discount for every new assignment after the first assignment. Upload your requirements at support@globalwebtutors.com to get the instant Spring Framework tutor. Correct and accurate data. 100% unique data. www.Globalwebtutors.com