Linux Programming
In a straightforward way Linux is a working framework (OS). Most of us have heard and used about popular operating systems like Google Android, Microsoft Windows, Apple iOS, Mac OS, and so on. Similarly, Linux also falls in this category.
Operating System can be defined as a product that empowers correspondence between software and PC equipment. Input is passed on by the operating system which is processed by the processor and finally, hardware displays the results. Broadly this is what an operating system does. Linux was developed and has been in use since the mid-90s. From supercomputers to wristwatches, Cars to refrigerators. It even powers our smart phones and tablets. It is especially well known among the hackers and even normal PC clients.
Importance of Linux
Multitasking: CPU time is divided intelligently which enables multitasking (performing multiple operations at the same time).
Portability: Different types of hardware are supported. It makes Linux portable. Portability here doesn't refer to typical definition meaning if a file can be carried in memory cards or pen drives.
Multi user capability: By using different terminals multiple users can have access to same system resources like hard disk, memory, etc.
Live CD/USB: Majority of Linux distros give live CD/USB which enables users to run/try it without installing it.
Open Source: Linux is a community-based development project and its code is freely available to all.
Graphical User Interface (X Window system): Linux can be transformed into a GUI based OS by installing packages but it is primarily a command line based OS.
Support's customized keyboard: Worldwide usage has led to support of different language keyboards.
File System: Linux gives hierarchical file system in which directories and files are arranged.
Security: Authentication by Login Id and password, authorization (permission to write, read and execute) and encryption form three major security systems of Linux.
Application support: Users can install and download many apps from Linux own software repository.
Why should students prefer to join LINUX course?
Linux is a revolutionary OS and is vastly different from any other OS.
Unlike MacOS and Windows Linux is open source. This allows programmers from all over the word to test their knowledge and design custom OS.
Virus, Malware and lag issues are not present in Linux OS. Users of operating systems like Windows face lot of these issues.
High security of Linux is because of the worldwide developer community. Best minds around the world have made Linus robust and highly secured. Regular scanning by antivirus is not needed. Big organizations like Amazon, Face book and Google use Linux in order to provide stability and security to their servers
A large amount of customization is available with Linux ad it gives users plethora of options to choose.
No money is required for server licensing and software to install Linux. It can be installed on as many computers as you want.
Skills required for completing Linux programming course assignment
Main concepts that are required to complete Linux programming course assignment are-
Users: - User needs to create a user account consisting of a username and password to use a Linux system.
Home directory: - To enable users to access the disk storage a home directory is assigned to the username.
Groups: - List of username is called groups. Groups help in the assignment of permissions to different users all at once. Username belongs to a group called default group.
Default shell: - Program that manages user command line sessions and login are called default shell.
Shared Resources: - Every resource that one user can access on a local system can also be accessed from remote systems using a dedicated network. Editing, sharing files and running software are some examples of operations that can be done. Even Linux system's display can be changed by a remote system. This is why Linux is said to be a networked operating environment.
Permissions: - User and group are the two owners of every resource in Linux. Sensitive files can be secured by changing permissions. This also avoids any accidental deletion of important data.
Difficulties encountered while writing Linux programming assignment
Permissions, Shared Resource, Default Shell, and groups are some basic concepts that one should have a deep understanding about before writing a quality Linux programming assignment. Students often face difficulty with Shell scripting. Lack of understanding of how shell scripting works and experience of using shell scripting creates a lot of problems for the users. Students also find it hard to use programs in Linux. Program in Linux is a set of commands that interacts with the kernel to provide the environment and perform the certain operations. A program can be built-in shell command, or a source compiled, object code file, an executable shell file, known as a shell script. Students also face problems interacting with the kernel through the shell. System programs and its paths should also be known. They are generally located in places like /usr/ucb, /bin, /usr/local/bin, etc.
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