Operators

Operators are used to perform specific mathematical or logical functions on data, often stored in variables. PowerShell offers multiple types of operators to manipulate data including:

• Arithmetic Operators
• Assignment Operators
• Unary Operators
• Equality Comparison Operators
• Logical Operators

Code	Explanation
$a = 2	Basic variable assignment operator
$a += 1	Incremental assignment operator
$a -= 1	Decrement assignment operator
$a -eq 0	Equality comparison operator
$a -ne 5	Not-equal comparison operator
$a -gt 2	Greater than comparison operator
$a -lt 3	Less than comparison operator
$FirstName = 'Trevor' $FirstName -like 'T*'	Perform string comparison using the -like operator, which supports the wildcard (*) character. Returns $true
$BaconIsYummy = $true $FoodToEat = $BaconIsYummy ? 'bacon' : 'beets'	Sets the $FoodToEat variable to 'bacon' using the ternary operator
'Celery' -in @('Bacon', 'Sausage', 'Steak', 'Chicken')	Returns boolean value indicating if left-hand operand exists in right-hand array
'Celery' -notin @('Bacon', 'Sausage', 'Steak')	Returns $true, because Celery is not part of the right-hand list
5 -is [string]	Is the number 5 a string value? No. Returns $false.
5 -is [int32]	Is the number 5 a 32-bit integer? Yes. Returns $true.
5 -is [int64]	Is the number 5 a 64-bit integer? No. Returns $false.
'Trevor' -is [int64]	Is 'Trevor' a 64-bit integer? No. Returns $false.
'Trevor' -isnot [string]	Is 'Trevor' NOT a string? No. Returns $false.
'Trevor' -is [string]	Is 'Trevor' a string? Yes. Returns $true.
$true -is [bool]	Is $true a boolean value? Yes. Returns $true.
$false -is [bool]	Is $false a boolean value? Yes. Returns $true.
5 -is [bool]	Is the number 5 a boolean value? No. Returns $false.