file utility POSIX complience

Brooks Davis brooks at one-eyed-alien.net
Wed Nov 1 14:49:25 UTC 2006


On Wed, Nov 01, 2006 at 12:20:37PM +0100, Jens Schweikhardt wrote:
> On Wed, Nov 01, 2006 at 11:06:44AM +0200, Baris Simsek wrote:
> # Hi,
> # 
> # I was looking for the non-POSIX FreeBSD utilities from here:
> # 
> # http://people.freebsd.org/~schweikh/posix-utilities.html#file
> # 
> # He talks about -d -h and -M options currently not available.
> # 
> # And i did a quick source to find original related document of POSIX. I 
> # met following PDFs may be interesting:
> # 
> # http://www.opengroup.org/rtforum/uploads/40/7319/POSIX_and_Linux_Application_Compatibility_v0.92_released_22_April_05.pdf
> # 
> # 9th page and 6th item says that:
> # The Linux file utility is not required to support the ?M, ?h, ?d, and 
> # the ?i options. The portable application shall not use these options.
> # 
> # Is there a contradiction between them?
> 
> No. The file utility POSIX spec is available here:
> http://www.opengroup.org/onlinepubs/009695399/utilities/file.html
> As you see, the -d/h/m/M options are marked UP (part of User Portability
> extension). Our -i option does something different from POSIX.
> 
> # I wonder that what jobs these options should perform?
> 
> See the Open Group's POSIX spec above.
> 
> # And is there any
> # developer currently working on it?
> 
> Not that I know of. Volunteers welcome.

Said volunteer would need to work the the actual author of our file
implementation, Christos Zoulas of NetBSD.

-- Brooks
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