> Hmm, I don't think that's a wise idea.  The whole point of using a full
> path is to avoid the problems resulting in different people having
> different versions in different orders in their PATH variable.  We
> shouldn't rely on that.

Is sed one of the posix 'standard utilities'?
If so, and if the shell is also posix conformant, then you can use
the (ugly) syntax:

$ command -p sed args...

in order to pick up the standard 'sed' without reference to the
users PATH.

(There is also a command, whose name I can't remember, that will
return the default PATH.  Refer to the posix command.html page.)

	David

-- 
David Laight: david@l8s.co.uk