The assignment operators of PowerShell
Here are some examples about PowerShell assignment operators:
“=”
$a = 3
sets the variable to the specified value
“+=”
$a += 2, same as $a = $a + 2
performs the addition operation in the existing value, then assigns the result back to the variable.
“-=”
$a -= 15, same as $a = $a – 15
performs the subtracdtion operation in the existing value, then assigns the result back to the variable.
“*=”
$a = $a * 3, same as $a = $a * 3
multiplies the value of a variable by the specified value or appends to the existing value.
“/=”
$a /= 3, same as $a = $a / 3
divides the value of a variable by the specified value.
“%=”
$a %= 3, same as $a = $a % 3
divides the value of a variable by the specified value and assigns the remainder(modulus) to the variable.