shell test for stdout=stderr

[Matthew Seaman]

Robin Becker wrote:
> Is there a way for a shell script to test if 2> is the same as 1>? I
> want to put messages in both when they are connected to different files,
> but would like to avoid duplicating the message when they are the same.

You could try using fstat(1) to print out the open file descriptors from
your process:

    fstat -p $$

and then compare the values in the DEV and INUM columns -- unfortunately
fstat has no way to map back from those device and inode values to
filenames.

	Cheers,

	Matthew

-- 
Dr Matthew J Seaman MA, D.Phil.                       7 Priory Courtyard
                                                      Flat 3
PGP: http://www.infracaninophile.co.uk/pgpkey         Ramsgate
                                                      Kent, CT11 9PW

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