Logical operators (-and, -or, -not) in PowerShell - Cheat Sheet & Quick Revision

Recall & Review

beginner

What does the -and operator do in PowerShell?

The -and operator returns $true only if both conditions on its sides are true. It works like saying "and" in everyday language, meaning both things must happen.

beginner

How does the -or operator work in PowerShell?

The -or operator returns $true if at least one of the conditions is true. It means "or" in normal talk, so if either side is true, the whole expression is true.

beginner

Explain the purpose of the -not operator in PowerShell.

The -not operator reverses the truth value of a condition. If something is $true, -not makes it $false, and vice versa. It's like saying "not" in everyday language.

beginner

What will this PowerShell expression return? <br>$true -and $false

It will return $false because -and needs both sides to be $true. Here, one side is $false, so the whole result is $false.

intermediate

What is the result of this expression? <br>-not ($false -or $false)

The expression inside the parentheses ($false -or $false) is $false. Then -not reverses it to $true. So the final result is $true.

Which operator returns $true only if both conditions are true?

A -or

B -and

C -not

D ==

The -and operator requires both sides to be true to return $true.

What does -not $true return?

A $true

B Error

C $false

D null

-not reverses the value, so -not $true is $false.

If $a = $false and $b = $true, what is the result of $a -or $b?

A $true

B null

C $false

D Error

The -or operator returns $true if at least one side is true.

Which operator would you use to check if a condition is NOT true?

A -not

B -and

C -or

D -eq

-not is used to reverse the truth value of a condition.

What is the result of $true -and ($false -or $true)?

A Error

B $false

C null

D $true

Inside parentheses $false -or $true is $true, so $true -and $true is $true.

Explain how the -and, -or, and -not operators work in PowerShell with simple examples.

Think about how you use 'and', 'or', and 'not' in everyday sentences.

Describe a real-life situation where you might use -and and -or in a PowerShell script.

Imagine checking if you can go outside based on weather and time.