Or Operator

Definition: Performs a logical disjunction on two expressions.

 

The OR operator evaluates two expressions and returns True if either of the expressions are true; you will get back the value False only if both parts are False. For example, suppose we want to evaluate the following two statements, then store the verdict in the variable $a:

 

·          23 is less than 12

·          12 is greater than 40

 

Here’s the command we’d use:

 

 

As you might expect, if you run the command and then echo back the value of $ a you’ll get the following, seeing as how both expressions are False: