Manage Input and Execution Flow Using IF, ElseIf and Else

The expressions in If construct evaluate to either True or False.

If(<expressio>) {
    # Statements to run
}

Operators

PowerShell has built-in parameters like $True and $False

There are different operators such as:
1. -le for less than or equal to 2. -eq for equal

Example

$Value = 3

If ($Value -le 0) {
  Write-Host "Is negative"
}

Else

This block runs if the If condition fails.

ElseIf

This blocks run if the condition for previous If or ElseIf fails.