Module 1: Introduction to OS

Question 1

Absolute path

Answer 1

It is one that starts from the main directory

Question 2

Alias

Answer 2

A nickname for common commands

Question 3

Appending flags

Answer 3

A way to add the data of the file without erasing existing data

Question 4

Bash

Answer 4

The language used to interact with the shell

Question 5

CLI

Answer 5

Command line interpreter

Question 6

Command line

Answer 6

A text interface program for a computer that inputs text commands and translates them to the operating system

Question 7

Escape characters

Answer 7

A concept that means that the next character after the back tick should be treated literally the same.

Question 8

.exe

Answer 8

A file extension found in Windows for an executable file

Question 9

Groups

Answer 9

A collection of users

Question 10

GUI

Answer 10

A graphical user interface

Question 11

Hidden files

Answer 11

A set of files that are not visible either to avoid alteration or simply because you don’t want someone to see them

Question 12

Hot key

Answer 12

A keyboard shortcut that does a particular task

Question 13

I/O Streams

Answer 13

An input stream handles data flowing into and out of a program

Question 14

Parameter

Answer 14

A value that is associated with a command

Question 15

Parent directory & child directories

Answer 15

A parent directory is a directory that houses all subsequent child directories

Question 16

Paths

Answer 16

A main directory that branches off and holds other directories and files

Question 17

Prompt

Answer 17

A prompt shows you which directory you’re currently in

Question 18

Regular expression

Answer 18

A pattern matching language that describes words, phrases, or more complicated patterns; regular expressions are used to help you do advanced pattern based selection

Question 19

Relative path

Answer 19

It is a path from your current directory

Question 20

Root directory

Answer 20

A parent directory for all other directories in a file system

Question 21

Shell

Answer 21

A shell is a command line interpreter for Linux

Question 22

Standard error (stderr)

Answer 22

A data stream that redirect the output of error messages in a different output stream. It works both in Linux and Windows

Question 23

Standard In (stdin)

Answer 23

A data stream in which the input that you provide through the keyboard goes to the standard in stream of the process that you’re interacting with. It works both in Linux and Windows

Question 24

Standard out (stdout)

Answer 24

A data stream that when a process creates output, it adds data to the standard out stream, which flows out of the process. It works both in Linux and Windows

Question 25

Stdin, stdout, stderr

Answer 25

Three data streams created when you launch a Linux command

Question 26

Subdirectories

Answer 26

A directory below or at a deeper level in the directory hierarchy

Question 27

Tab completion

Answer 27

A way to auto-complete a command or file names and directories

Question 28

Wildcard

Answer 28

A character that is used to help select files based on a certain pattern

Question 29

Windows Search service

Answer 29

A service that indexes files on your computer by looking through them on a schedule