Perl fileno Function

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Description

This function returns the file descriptor number (as used by C and POSIX functions) of the specified FILEHANDLE. This is generally useful only for using the select function and any low-level tty functions.

Syntax

Following is the simple syntax for this function:

fileno FILEHANDLE

Return Value

This function returns File descriptor (numeric) of FILEHANDLE and undef on failure.

Example


When above code is executed, it produced following result:




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