Perl fcntl Function


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Description

This function is the Perl version of the system fcntl( ) function. Performs the function specified by FUNCTION, using SCALAR on FILEHANDLE. SCALAR either contains a value to be used by the function or is the location of any returned information.

Syntax

Following is the simple syntax for this function −

fcntl FILEHANDLE, FUNCTION, SCALAR

Return Value

This function returns 0 but true if the return value from the fcntl()is 0 Value returned by system and undef on failure.

Example

Following is the example code showing its basic usage −


When above code is executed, it produces the following result −




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