SHELL Script Operators

 

Arithmetic Operator:

+    (Addition)
–    (Subtraction)
*    (Multiplication)
/    (Division)
%    (Modules)
=    (Assignment)
==    (Equal)
!=    (Not Equal)

Relational Operator:

-lt       (Less Than)
-gt      (Greater Than)
-eq     (Equal)
-ne     (Not Equal)
-le      (Less Than and Equal)
-ge     (Greater Than and Equal)

Logical Operator:

-a     (AND)
-o     (OR)
!       (NOT)

special Operator:

-f      (file)
-d     (directory)
-r      (readable)
-w     (writable)
-x      (executable)
-e      (Exit)

Bitwise Operator:

&     (Ampersand)
&&  (And)
||     (Or)
!      (Not)