Relational and Logical Operators in PERL

Relational and Logical Operators in PERL

All programming languages have Relational and logical operators. Lets discuss on what Perl has as relational & logical operators.

• The relational & logical operators are used with conditional statements and looping statements.
• Perl’s relational and logical operators are same as C language and shell script.
• All operators’ returns true if the condition satisfies else return False.

Relational operators

The C way	The shell script way	Description
>	gt	Greater than
<	lt	Less than
>=	ge	Greater than equal to
<=	le	Less than equal to
==	eq	Equals
!=	ne	Not equal

Logical operator

The C way	Description
&&	and operator
||	or operator
!	not operator

Other file operations

Operators	Description
-e filename	File exist
-f filename	Plane file
-d filename	Directory
-s filename	File size not zero
-r filename	File readable
-w filename	File writable
-x filename	File executable