PowerShell Operators

 PowerShell Operators Basically PowerShell comparison operators are declared using the symbol dash (-) followed by a name (eq for equal, gt for greater than, -lt as less than and more.

Comparison operators:

• 4 -eq  4  # Equal to (=)
• 3 -ne  5 # Not equal to (!=)
• 6 -gt  5 # Greater-than (>)
• 15 -ge  15 # Greater-than or equal to (>=)
• 3 -lt 10 # Less-than (<)
• 3 -le  3 # Less-than or equal to (<=)

String comparison operators:

“rajashekar” -like “*shekar”   # This comparison operator used for match using the wildcard character (*)

“rajashekar” -notlike “prava*” # This comparison operator used to check the string does not match using the wildcard (*).

“mylove” -match ‘mylove $’ # This comparison operator used to for matching a string using regular expressions.

“hello” -notmatch  ‘hi’ # This comparison operator used to check as not match a string using regular expressions.

PowerShell  Collection comparison operators:

“raja -contains “raj” #  This comparison operator used for Returning a true when the value (right) is present

“pravaf” -notcontains “123” # This comparison operator used for returning a true when the value (right) is not present

“raja” -in “raja”, “raj” #  This comparison operator returns true when the value (left) is present

“143143” -notin “234”, “345” # This comparison operator  returns true when the value (left) is not present.

PowerShell Arithmetic Operators

1. +    This operator used for an addition.
2. –    This operator used for    Subtraction.
3. #    This operator used for   value.
4. *    This operator used for multiplication.
5. /    This operator used for division.
6. %    This operator used for modulus.

PowerShell  Logical Operators

1. -and This operator used logical and.
2. . -or This operator used for logical or.
3. -xor This operator used for logical exclusive or. 4
4. -not This operator used for logical not.
5. ! This operator used for logical not.

PowerShell  Assignment Operators

1. =    This assignment operator Sets the value of a variable to the specified value
2. +=  This assignment operator  Increases the value of a variable by the specified value
3. -=  This assignment operator  Decreases the value of a variable by the specified value.
4. /=   This assignment operator Divides the value of a variable by the specified value.
5. %= This assignment operator  Divides the value of a variable by the specified value and then.

1) PowerShell if statement:

If a conditional logic operator used for running the code block if a specified conditional test is true.

Syntax of if–>

if ( condition ) { commands_to_execute }

[ elseif ( condition2 ) { commands_to_execute } ]

[ else {commands_to_execute} ]

Examples:

If ($scripter -eq "I know powershell")
  {

	Write-host " one can write powershell scripts"
	
	}
	
# Two use more than one if statement:

Exalmple 2

# Two use more than one if statement:

If ($scripter -eq "I know powershell")
  {

	Write-host " one can write powershell scripts"
	
	}
Elseif ($scripter -eq " I don't know powershell")
  {
	Write-host "You need to learn powershell"
	
	}

# Negation if statement

$test =  "raja"

If($test -ne "prava")
{
	
Write-host "I found raja"
}

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