Scripting Concepts

Question 1

Variables

Answer 1

Variables are used to store information to be referenced and manipulated in a computer program.

Variables in scripts do not have to be declared (unlike in programming languages) but can be assigned a value.

x = 1
y = 2

Question 2

Strings

Answer 2

A string is a list of characters in a specific sequence.

“John Smith”

Question 3

Comments

Answer 3

This is a comment

A comment is written into the code to help a human understand the initial programmer’s logic.

Question 4

Constants

Answer 4

A constant is a named data item with a predefined value, while a variable is a named data item whose value can change during the course of program execution.

PI = 3.1415927

Question 5

Environmental Variables

Answer 5

Environment variables are system wide and are inherited by all system processes.

Question 6

Loops

Answer 6

Loops are a programming element that repeat a portion of code a set number of times until the desired process is complete.

Often implemented with FOR or WHILE statements.

Question 7

Branch

Answer 7

A branch is used to control the flow within a computer program or script, usually based on some logic condition.

Often, these are implemented with IF THEN ELSE statements.