Variable creation with $ in PowerShell - Cheat Sheet & Quick Revision

Recall & Review

beginner

What does the $ symbol mean in PowerShell?

The $ symbol is used to create or reference a variable in PowerShell. It tells the shell that what follows is a variable name.

beginner

How do you create a variable named 'name' with the value 'Alice' in PowerShell?

You write: $name = "Alice". This assigns the text 'Alice' to the variable $name.

beginner

Can you use a variable without the $ symbol in PowerShell?

No. In PowerShell, you must use the $ symbol to access or create variables. Without it, PowerShell treats the word as a command or string.

beginner

What happens if you write $number = 5 in PowerShell?

You create a variable named $number and store the number 5 in it. You can use $number later to get the value 5.

beginner

How do you display the value of a variable in PowerShell?

Simply type the variable name with the $ symbol, like $name, and PowerShell will show its value.

What does $var = 10 do in PowerShell?

A Creates a variable named var with value 10

B Deletes the variable var

C Prints 10 to the screen

D Creates a function named var

The $ symbol creates a variable. $var = 10 assigns the value 10 to the variable var.

How do you access the value stored in a variable named 'score'?

A &score

B score

C $score

D #score

In PowerShell, you use $ before the variable name to access its value.

Which of these is a valid variable name in PowerShell?

A $first_place

B $-score

C $1stPlace

D $score!

Variable names can include letters, numbers (not at start), and underscores. $first_place is valid.

What will PowerShell do if you type $greeting without assigning it first?

A Show an error

B Show an empty string

C Show the variable name

D Show nothing

Unassigned variables in PowerShell return an empty string when accessed.

Which symbol is used to create variables in PowerShell?

A %

B #

C &

D $

The $ symbol is used to create and reference variables in PowerShell.

Explain how to create and use a variable in PowerShell with an example.

Think about how you store and then use a label for a value.

What rules should you remember about variable names and usage in PowerShell?

Consider what characters are allowed and how to call variables.