本教學列出了所有Korn Shell中的運算符。在這裡，大部分的運算符都是我們熟知的C語言編程很相似。

運算符優先級遞減的順序如下列出：

算術和邏輯運算符：

運算符	描述
+	Unary plus
-	Unary minus
!~	Logical negation; binary inversion (one's complement)
*	Multiply
/	Divide
%	Modulo
+	Add
-	Subtract
<<	Left shift
>>	Right shift
==	String comparison for equality
!=	String comparison for non equality
=~	Pattern matching
&	Bitwise "and"
^	Bitwise "exclusive or"
|	Bitwise "inclusive or"
&&	Logical "and"
||	Logical "or"
++	Increment
--	Decrement
=	Assignment

文件測試操作：

有以下運算符測試可用在Unix文件中的相關聯各種屬性。

運算符	描述
-r file	Checks if file is readable if yes then condition becomes true.
-w file	Check if file is writable if yes then condition becomes true.
-x file	Check if file is execute if yes then condition becomes true.
-f file	Check if file is an ordinary file as opposed to a directory or special file if yes then condition becomes true.
-s file	Check if file has size greater than 0 if yes then condition becomes true.
-d file	Check if file is a directory if yes then condition becomes true.
-e file	Check if file exists. Is true even if file is a directory but exists.