Fiserv Linux Essential course

WHAT IS LINUX AND WHY IS IT SO POPULAR?

It is free and open-source. We can download Linux for free and customize it as per our needs.

It is very robust and adaptable.

It accompanies with an immense amount of libraries and utilities.

All of the above

WHAT IS BASH?

A shell for C programing. It is intended to be a conformant implementation of the IEEE POSIX Shell and Tools portion of the IEEE POSIX specification (IEEE Standard 1003.1).

Bourne Again Shell. Steve Bourne developed it as a replacement to the original Bourne Shell (represented by /bin/sh). It combines all the features from the original version of Bourne Shell, plus additional functions to make it easier and more convenient to use. Since then it has been adapted as the default shell for most running systems.

A GNU operating system provides other shells,

WHAT IS THE CORE OF LINUX OPERATING SYSTEM?

The Libraries

The applications

The Kernel which is broken down into Shell, Command, Script, and Terminal. Shell is the Command Line Interpreter.

WHAT ARE THE BASIC DIFFERENCES BETWEEN UNIX AND LINUX OPERATING SYSTEMS?

Linux is free and open-source software, UNIX is copyrighted name.

Unix and Linux are develop by the same Bell Laboratories.

They Are the same.

DESCRIBE WHAT IS A ROOT ACCOUNT IN LINUX?

Is the only user in the system.

It is like a system administrators account that grants full control on the system.

Is the account with system privileges.

USING VIM EDITOR. What are the 3 modes in VIM?

Visual, Line and Block

Command, Visual and Insert.

Comman, Insert and Block.

WHAT IS A ZOMBIE PROCESS?

A Process dead in the system.

A Processes whose mature parent processes died without reaping its children.

A process that can be killed with Kill -9.

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