Finals

Question 1

Allows for an automatic commands execution that would otherwise be executed interactively one by-one.

Answer 1

Scripting

Question 2

Is a macro processor that allows for interactive or non-interactive command execution.

Answer 2

Shell

Question 3

Meaning of “BASH”?

Answer 3

Bourne Again Shell

Question 4

Command-line language. Open-source version of the Bourne Shell and was first released in 1989.

Answer 4

Bash

Question 5

Text file containing instructions to be executed in order from top to
bottom.

Answer 5

Bash Script

Question 6

How are script files created?

Answer 6

vim, gedit, and emacs.

Question 7

Starts the shell script

Answer 7

!/bin/sh

Question 8

Symbol is used for comments.

Answer 8

#

Question 9

Used to display text and variable output.

Answer 9

echo

Question 10

Allow a programmer to store data, alter and reuse them throughout the script.

Answer 10

Variables

Question 11

Variable that is present within the current instance of the shell

Answer 11

Local Variable

Question 12

Special variable that is set by the shell and is required by the shell to function correctly.

Answer 12

Shell Variables

Question 13

Available to any child process of the shell.

Answer 13

Environment Variables

Question 14

Filename of the current script.

Answer 14

$0

Question 15

These variables correspond to the arguments with which a script was invoked

Answer 15

$n

Question 16

The number of arguments supplied to a script.

Answer 16

$#

Question 17

The exit status of the last command executed.

Answer 17

$?

Question 18

The process number of the current shell. For shell scripts, this is the process ID under which they are executing.

Answer 18

$$

Question 19

The process number of the last background command.

Answer 19

$!

Question 20

Divides left-hand operand by right-hand operand and returns the remainder

Answer 20

% (Modulus)

Question 21

Assigns right operand in the left operand

Answer 21

= (Assignment)

Question 22

Compares two numbers, if both are same then returns true

Answer 22

== (Equality)

Question 23

Compares two numbers, if both are different then returns true

Answer 23

!= (Not Equality)

Question 24

Checks if the value of two operands are equal or not; if yes, then the condition becomes true

Answer 24

-eq

Question 25

Checks if the value of two operands are equal or not; if values are not equal, then the condition becomes true.

Answer 25

-ne

Question 26

Checks if the value of the left operand is greater than the value of the right operand; if yes, then the condition becomes true.

Answer 26

-gt

Question 27

Checks if the value of the left operand is less than the value of the right operand; if yes, then the condition becomes true

Answer 27

-lt

Question 28

Checks if the value of the left operand is greater than or equal to the value of the right operand; if yes, then the condition becomes true.

Answer 28

-ge

Question 29

Checks if the value of the left operand is less than or equal to the value of the right operand; if yes, then the condition becomes true.

Answer 29

-le

Question 30

Allow the programmer to implement decision making within a shell script based on certain conditions or events.

Answer 30

Conditionals

Question 31

These statement saves going through a whole set of if-then-else statements

Answer 31

Case Statement

Question 32

Constructs used to iterate through any given number of tasks until all items in a specified list were completed or predefined conditions were met.

Answer 32

Loops

Question 33

Used to iterate through any given code for any number of supplied items in the list.

Answer 33

For Loop

Question 34

Enclosed between DOand DONEis repeatedly executed only until this condition changes from false to true.

Answer 34

Until loop

Question 35

Acts on a given condition. Meaning, it will keep executing code enclosed withing DO and DONE while the specified condition is true

Answer 35

While Loop