PERL ioctl Function

Syntax

ioctl FILEHANDLE, FUNCTION, SCALAR

Definition and Usage

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.

Return Value

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

Example