Perl ioctl Function

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Description

This function performs the function FUNCTION using the system function ioctl( ), using SCALAR to set or receive information when appropriate. The available values for FUNCTION are completely system independent. You should refer to your ioctl.h C header file, if you have one available, for suitable values.

Syntax

Following is the simple syntax for this function:

ioctl FILEHANDLE, FUNCTION, SCALAR

Return Value

This function returns undef on failure otherwise 0 but true if the return value from the ioctl( )is 0.

Example

Following is the example code showing its basic usage:


When above code is executed, it produced following result




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