[File] [PATCH] Add magic definition for nfdump binary files

[Peter Haag]

Hi Christos,

Please find below a proposed magic definition entry to support the identification
of nfdump binary flow data files for the file command. (https://github.com/phaag/nfdump)
The initial header signature at offset 0 of the file is a 16-bit uint16_t with const value 0xA50C.

Thank you for maintaining the file utility

Best regards

	- Peter



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# Type:  nfdump binary flow data
# Extension: .nf / .nfd / .nfdump
# URL:   https://github.com/phaag/nfdump
# Maintainer: Peter Haag <peter at epyxis.ch>

0    leshort    0xA50C    
>2   leshort    >0        nfdump binary flow data (little-endian)
!:mime application/x-nfdump

0    beshort    0xA50C    
>2   beshort    >0        nfdump binary flow data (big-endian)
!:mime application/x-nfdump

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