Manipulating Variables

Concatenation: You can concatenate (combine) strings or variables by using the “+” operator. For example, $firstName = "John"; $lastName = "Doe"; $fullName = $firstName + " " + $lastName creates a variable named $fullName that holds the value “John Doe”.
Casting: You can convert a variable from one data type to another by using the cast operator. For example, [int]$myVar = "123" creates a variable named $myVar that holds the integer value 123.
Math Operations: You can perform arithmetic operations on numeric variables using the standard arithmetic operators. For example, $x = 10; $y = 5; $z = $x + $y creates a variable named $z that holds the value 15.
Comparison Operators: You can compare the values of two variables using comparison operators such as “-eq” (equal to), “-ne” (not equal to), “-lt” (less than), “-le” (less than or equal to), “-gt” (greater than), and “-ge” (greater than or equal to). For example, $x = 10; $y = 5; $x -gt $y returns “True” because 10 is greater than 5.
Array Operations: You can manipulate array variables using various array operations, such as adding or removing elements from an array, sorting an array, or filtering an array based on specific criteria.
String Manipulation: You can manipulate string variables using various string operations, such as trimming leading or trailing whitespace from a string, converting a string to uppercase or lowercase, or replacing a specific substring in a string.

Overall, manipulating variables in PowerShell involves performing various operations on the variables, such as concatenation, casting, arithmetic, comparison, and array or string operations, based on your specific needs and use case.